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Siemens CPU 312, Hardware And Installation Manual

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Siemens CPU 312 Hardware And Installation Manual Download Page 6

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S7-300 Automation System, Hardware and Installation: CPU 31xC and CPU 31x 

vi

 

A5E00105492-03 

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1-1

 

Information Landscape of S7-300 ................................................................1-3

 

1-2

 

Additional Documentation ............................................................................1-4

 

1-3

 

SIMATIC Technical Support.........................................................................1-5

 

3-1

 

Installing an S7 system ................................................................................3-1

 

5-1

 

Modules in an S7-300 ..................................................................................4-1

 

4-1

 

Horizontal and vertical installation................................................................5-3

 

4-2

 

Shielding contact element ............................................................................5-5

 

4-3

 

Clearance .....................................................................................................5-6

 

4-4

 

Rack with eight signal modules....................................................................5-8

 

4-5

 

Full assembly using racks ..........................................................................5-10

 

4-6

 

Power loss dissipated.................................................................................5-15

 

4-7

 

CPU with grounded reference potential (as supplied) ...............................5-18

 

4-8

 

Creating an ungrounded reference potential on a CPU.............................5-19

 

4-9

 

Configuration with isolated modules ..........................................................5-21

 

4-10

 

Configuration with non-isolated modules ...................................................5-22

 

4-11

 

Grounding concept for the S7-300 with CPU 31xC ...................................5-26

 

4-12

 

Grounding concept for the S7-300 (excluding CPU 31xC) ........................5-27

 

4-13

 

Example: S7-300 with load power supply from PS 307 .............................5-29

 

4-14

 

Example of an MPI subnet .........................................................................5-43

 

4-15

 

Example: Maximum distances in the MPI subnet ......................................5-44

 

4-16

 

Example of a PROFIBUS subnet ...............................................................5-45

 

4-17

 

Example: CPU 314C-2 DP as MPI and PROFIBUS nodes .......................5-46

 

4-18

 

Example of PG access across network boundaries (routing) ....................5-47

 

4-19

 

Installing the terminating resistors in an MPI subnet .................................5-48

 

6-1

 

Holes for mounting the 2 m rail ....................................................................6-4

 

6-2

 

Free space required for an S7-300 installation ............................................6-6

 

6-3

 

Inserting slot numbers in modules .............................................................6-10

 

7-1

 

connecting the protective conductor to the rail ............................................7-4

 

7-2

 

Setting the mains voltage selector switch for the PS 307............................7-5

 

7-3

 

Wiring the power supply module and the CPU ............................................7-7

 

7-4

 

Move the front connector into wiring position.............................................7-10

 

7-5

 

Slide the labeled strips into the front panel ................................................7-13

 

7-6

 

Shielding contact element underneath two signal modules.......................7-15

 

7-7

 

Connecting 2-wire cables to the shielding contact element.......................7-16

 

7-8

 

Bus connector: Enabled and disabled terminating resistor........................7-18

 

8-1

 

S7-300 slots and the associated module start addresses ...........................8-2

 

8-2

 

Addresses of the I/O of digital modules .......................................................8-4

 

8-3

 

I/O Addresses of a digital module in Slot 4 ..................................................8-5

 

8-4

 

I/O addresses of an analog module in Slot 4 ...............................................8-6

 

9-1

 

Connecting a PG to an S7-300 ....................................................................9-6

 

9-2

 

Connecting a PG to multiple S7-300 PLCs..................................................9-7

 

9-3

 

Connecting a PG to a subnet .......................................................................9-8

 

9-4

 

PG connected to an ungrounded S7-300.....................................................9-9

 

9-5

 

Insert the micro memory card into the CPU...............................................9-11

 

9-6

 

Using the mode selector switch to reset the memory ................................9-14

 

9-7

 

Intermediate memory in a DP CPU operating as a DP slave ....................9-29

 

9-8

 

Direct data exchange with CPUs 31x-2 DP/31xC-2 DP.............................9-33

 

10-1

 

Unlocking the front connector and removing the module...........................10-5

 

10-2

 

Removing the front connector coding pin...................................................10-6

 

10-3

 

Installing a new module..............................................................................10-7

 

10-4

 

Inserting the front connector ......................................................................10-8

 

10-5

 

Location of fuses in the digital output module 120/230 VAC ...................10-10

 

Summary of Contents for CPU 312

Page 1: ...ing 8 Commissioning 9 Maintenance 10 Testing Functions Diagnostics and Fault Elimination 11 Appendix 12 Glossary 13 Index SIMATIC S7 300 Automation System Hardware and Installation CPU 31xC and CPU 31x Installation Manual This manual is part of the documentation package with the order number 6ES7398 8FA10 8BA0 Edition 06 2003 A5E00105492 03 ...

Page 2: ...ibed in the catalog or the technical description and only in connection with devices or components from other manufacturers which have been approved or recommended by Siemens This product can only function correctly and safely if it is transported stored set up and installed correctly and operated and maintained as recommended Trademarks SIMATIC SIMATIC HMI and SIMATIC NET are registered trademark...

Page 3: ...8 1 Grounding concept and overall structure 5 16 5 8 2 Installing an S7 300 with Grounded Reference Potential 5 18 5 8 3 Configuring an S7 300 with Ungrounded Reference Potential Not CPU 31xC 5 19 5 8 4 Isolated or Non Isolated Modules 5 20 5 8 5 Grounding Measures 5 23 5 8 6 Overview Grounding 5 26 5 9 Selecting the Load Power Supply 5 28 5 10 Planning Subnets 5 30 5 10 1 Extending and Networking...

Page 4: ... I O of the CPU 8 6 8 6 Consistent Data 8 8 RPPLVVLRQLQJ 9 1 In this Chapter 9 1 9 2 Commissioning Procedure 9 1 9 3 Commissioning Checklist 9 4 9 4 Commissioning the Modules 9 6 9 4 1 Connecting the PG 9 6 9 4 2 Inserting Replacing a Micro Memory Card MMC 9 10 9 4 3 Initial Power On 9 12 9 4 4 Resetting Memory via the Mode Selector Switch of the CPU 9 13 9 4 5 Formatting the Micro Memory Card MMC...

Page 5: ...rence 12 3 12 2 1 Basic Points for System Installations Conforming with EMC Requirements 12 3 12 2 2 Five Basic Rules for Ensuring EMC 12 5 12 2 3 EMC Compatible Installation of PLC 12 7 12 2 4 Examples of an EMC Compatible Installation 12 9 12 2 5 Shielding of Cables 12 12 12 2 6 Equipotential bonding 12 13 12 2 7 Cable Routing inside Buildings 12 15 12 2 8 Outdoor cable routing 12 17 12 3 Lightn...

Page 6: ...ce required for an S7 300 installation 6 6 6 3 Inserting slot numbers in modules 6 10 7 1 connecting the protective conductor to the rail 7 4 7 2 Setting the mains voltage selector switch for the PS 307 7 5 7 3 Wiring the power supply module and the CPU 7 7 7 4 Move the front connector into wiring position 7 10 7 5 Slide the labeled strips into the front panel 7 13 7 6 Shielding contact element un...

Page 7: ...atus 11 26 11 9 Structure of the interrupt status 11 27 11 10 Bytes y 4 to y 7 for a diagnostic interrupt operating status change by intelligent slave 11 28 11 11 Bytes y 4 to y 7 for the diagnostic interrupt SFB 75 11 29 12 1 Possible paths of electromagnetic interference 12 3 12 2 Example of an EMC compatible cabinet installation 12 9 12 3 Example of EMC compatible wall mounting 12 11 12 4 Mount...

Page 8: ...the subnet 5 32 4 14 MPI PROFIBUS DP addresses 5 33 4 15 MPI addresses of CPs FMs in an S7 300 5 34 4 16 Possible interface operating modes for CPU 317 2 DP 5 36 4 17 The following devices may be connected 5 37 4 18 Available bus cables 5 38 4 19 Marginal conditions for wiring interior bus cables 5 39 4 20 Bus connector 5 39 4 21 RS 485 repeater 5 40 4 22 PG patch cord 5 40 4 23 Permitted cable le...

Page 9: ...s 11 11 11 8 Event recognition by CPUs 31x 2 as the DP master 11 14 11 9 Evaluation in the DP master of RUN to STOP transitions by the DP slave 11 14 11 10 Reading the diagnostic information using STEP 5 and STEP 7 in the masters system 11 16 11 11 Event recognition by CPUs 31x 2 acting as the DP slave 11 20 11 12 Evaluation of RUN to STOP transitions in the DP master DP slave 11 20 11 13 Structur...

Page 10: ... RQWHQWV S7 300 Automation System Hardware and Installation CPU 31xC and CPU 31x x A5E00105492 03 ...

Page 11: ...XDO This manual is applicable to the following CPUs and hardware and software versions V RI YHUVLRQ 38 RQYHQWLRQ 7KH 38V DUH UHIHUUHG WR LQ WKLV PDQXDO DV IROORZV 2UGHU 1R LUPZDUH DUGZDUH CPU 312C 6ES7312 5BD01 0AB0 V2 0 0 01 CPU 313C 6ES7313 5BE01 0AB0 V2 0 0 01 CPU 313C 2 PtP 6ES7313 6BE01 0AB0 V2 0 0 01 CPU 313C 2 DP 6ES7313 6CE01 0AB0 V2 0 0 01 CPU 314C 2 PtP 6ES7314 6BF01 0AB0 V2 0 0 01 CPU 3...

Page 12: ...2 Process Control Equipment Factory Mutual Research Approval Standard Class Number 3611 PDUN The SIMATIC S7 300 product series conforms to the requirements and safety specifications of following EU directives EU directive 73 23 EWE Low voltage directive EU directive 89 336 EEC EMC directive WLFN PDUN The SIMATIC S7 300 product series is compliant with AS NZS 2064 Australia 6WDQGDUGV The SIMATIC S7...

Page 13: ... CPU Reference Manual S7 300 Programmable Controller Module Specifications Function descriptions and the technical data of the signal modules power supply modules and the interface modules Instruction List CPU 312 IFM to 318 2 DP CPU 31xC CPU 31x IM 151 7 CPU BM 147 1 CPU BM 147 2 CPU List of stored instructions of the CPUs and their execution times List of executable blocks OBs SFCs SFBs and thei...

Page 14: ...o use the products described in this manual then please contact your local Siemens dealer http www siemens com automation partner 7UDLQLQJ HQWHU We can provide training courses to help you get started with your S7 300 PLC Please contact your local Training Center or the Central Training Center in Nuremberg D 90327 Germany Phone 499 911 895 3200 http www sitrain com 6 0 7 GRFXPHQWDWLRQ RQ WKH QWHUQ...

Page 15: ...3 E mail adsupport siemens com GMT 1 00 XURSH IULFD Nuremberg XWKRUL DWLRQ Local time Mo Fr 8 00 to 17 00 Phone 49 0 180 5050 222 Fax 49 0 180 5050 223 E mail adsupport siemens com GMT 1 00 PHULFD Johnson City 7HFKQLFDO 6XSSRUW DQG XWKRUL DWLRQ Local time Mo Fr 8 00 to 17 00 Phone 1 0 770 740 3505 Fax 1 0 770 740 3699 E Mail isd callcenter sea siemens com GMT 5 00 VLD XVWUDOLD Beijing 7HFKQLFDO 6X...

Page 16: ...to date product information What s new FAQs Frequently Asked Questions Downloads Tips and Tricks Our Newsletter always offers you the latest information on your products The Knowledge Manager finds the documents you require Users and specialists all over the world share their experience in our Forum You can find your local service partner for Automation Drives in our Partner Database Information r...

Page 17: ...luence the PLC SSHQGL RI WKH QVWDOODWLRQ 0DQXDO Table 2 2 Electrical isolation QIRUPDWLRQ RQ LV DYDLODEOH LQ Which modules can I use if electrical isolation is required between sensors actuators Chapter RQILJXULQJ OHFWULFDO DVVHPEO SURWHFWLYH PHDVXUHV DQG JURXQGLQJ LQ WKH QVWDOODWLRQ 0DQXDO Reference Manual 0RGXOH DWD When do I need to isolate the potential of individual components How do I wire t...

Page 18: ...dules do I want to use for local I O expansion modules EMs 0RGXOH DWD Reference Manual for distributed I Os PROFIBUS DP Manual of the relevant I O device e g 0DQXDO 7 Table 2 5 Configuration consisting of the central processing unit CPU and expansion modules EMs QIRUPDWLRQ RQ LV DYDLODEOH LQ Which rack rail is best suited to my application Chapter RQILJXULQJ LQ WKH QVWDOODWLRQ 0DQXDO Which Interfa...

Page 19: ...WLRQ 0DQXDO RPPXQLFDWLRQ ZLWK 6 0 7 Manual How do I network the individual components Chapter RQILJXULQJ and ZLULQJ LQ WKH QVWDOODWLRQ 0DQXDO Table 2 8 Software QIRUPDWLRQ RQ LV DYDLODEOH LQ Which software do I require for my S7 300 system Chapter 7HFKQLFDO 6SHFLILFDWLRQ applicable 38 DWD Reference Manual Table 2 9 Supplementary features QIRUPDWLRQ RQ LV DYDLODEOH LQ How do I implement operator co...

Page 20: ... XLGH WR WKH 6 RFXPHQWDWLRQ S7 300 Automation System Hardware and Installation CPU 31xC and CPU 31x 2 4 A5E00105492 03 ...

Page 21: ... must follow to install your SIMATIC S7 system We shall then go on to explain the basic rules that you should follow and how you can modify an existing system 3URFHGXUH IRU LQVWDOOLQJ DQ 6 V VWHP Configuration Installation Wiring Should a subnet be created Network Addressing Installation completed continue with commissioning YES NO Figure 3 1 Installing an S7 system ...

Page 22: ...ou must at least keep to these basic rules if you want your S7 system to operate correctly 0RGLI LQJ WKH VWUXFWXUH RI DQ H LVWLQJ 6 V VWHP If you want to modify the configuration of an existing system at a later time proceed using the steps indicated above 1RWH If you want to install a signal module at a later time consult the relevant information for the respective module URVV UHIHUHQFH Also note...

Page 23: ...diagram illustrates a possible configuration SF BUSF DC5V FRCE RUN STOP SF BUSF DC5V FRCE RUN STOP 1 2 3 4 5 Figure 4 1 Modules in an S7 300 7KH GLDJUDP LOOXVWUDWHV XQGHU QXPEHU WKH IROORZLQJ PRGXOHV RI DQ 6 Power supply PS Central processing unit CPU The example in the figure shows a CPU 31xC with integrated I O Signal module SM PROFIBUS bus cable Cable for connecting a programming device PG ...

Page 24: ...FIBUS cable You can connect several S7 300s using a PROFIBUS bus cable 6 PRGXOHV There is a whole range of components available for creating and using an S7 300 The table below shows the major modules and their functions Table 4 1 Components of an S7 300 RPSRQHQWV XQFWLRQ OOXVWUDWLRQ Rail Accessory Shielding contact element This is the rack for an S7 300 Power supply PS This converts the line volt...

Page 25: ...rface Additional properties of specific CPUs DP master or DP slave in a PROFIBUS subnet Technological functions Point to point connection RUN STOP MRES BF1 BF2 SF DC5V FRCE RUN STOP e g CPU 317 2 DP Signal modules SM Digital input modules digital output modules digital I O modules analog input modules analog output modules analog I O modules Accessory Front connectors They match different process ...

Page 26: ...ble terminals Use for wiring the digital I O modules Interface module IM Accessory Connecting cable Connects the individual rows in an S7 300 PROFIBUS cable with bus connector Connect the nodes of an MPI or PROFIBUS subnet to one another PG cable Connects a PG PC to a CPU RS485 repeater Used to amplify the signals in an MPI or PROFIBUS subnet and for coupling segments of an MPI or PROFIBUS subnet ...

Page 27: ... of an S7 300 Considerations for networking XUWKHU LQIRUPDWLRQ RQ QHWZRUNLQJ For information on network topics we recommend the RPPXQLFDWLRQ ZLWK 6 0 7 Manual This manual contains important notes on networking for SIMATIC professionals as well as the basics for newcomers URVV UHIHUHQFH Information on ambient conditions is in the Appendix see PELHQW RQGLWLRQV Information on special protective measu...

Page 28: ... machine protection directives This chapter and the appendix HQHUDO UXOHV DQG UHJXODWLRQV RQ 6 RSHUDWLRQ provide an overview of the most important rules you need to consider when integrating an S7 300 into a plant or a system HQWUDO XQLW 8 DQG H SDQVLRQ PRGXOH 0 An S7 300 PLC consists of a central unit CU and if required one or multiple expansion modules EMs The rack containing the CPU is referred...

Page 29: ...DC5V FRCE RUN STOP SIEMENS SIEMENS SF BUSF DC5V FRCE RUN STOP SIEMENS CPU CPU PS PS 1 2 3 3 SM SM SM SM SM SM SM SM SM SM SM SM SM SM SM SM Figure 5 1 Horizontal and vertical installation 7KH GLDJUDP LOOXVWUDWHV XQGHU QXPEHU Vertical installation of an S7 300 Horizontal installation of an S7 300 Rail XUWKHU LQIRUPDWLRQ the selection and dimensions of rails racks can be found in Chapter 0RGXOH GLPH...

Page 30: ...ail to your application QVWDOODWLRQ GLPHQVLRQV RI PRGXOHV Table 5 2 Module width 0RGXOH LGWK Power supply PS 307 2 A 50 mm Power supply PS 307 5 A 80 mm Power supply PS 307 10 A 200 mm CPU The installation dimensions are listed in the Technical Data section of your 38 DWD 5HIHUHQFH 0DQXDO Analog I O modules 40 mm Digital I O modules 40 mm Simulator module SM 374 40 mm Interface modules IM 360 and ...

Page 31: ...cket Mount the bracket Order No 6ES5 390 5AA0 0AA0 to the rail using the two screw bolts If you use a shielding contact element the specified dimensions apply from the lower edge of the module Width of the shielding contact element 80 mm Number of mountable shielding terminalsper shielding contact element max 4 Table 5 3 Shielding terminals overview DEOH ZLWK VKLHOGLQJ GLDPHWHU 6KLHOGLQJ WHUPLQDO ...

Page 32: ...ks shown in the figure below specifies the clearance between racks and adjacent components cable ducts cabinet walls etc For example if you wire your modules using a cable duct the clearance between the bottom edge of the shielding contact element and the cable duct must be 40 mm 40 mm 40 mm 20 mm 40 mm a 200 mm a 40 mm 20 mm PS 1 2 SM SM SM SM SM CPU CPU Figure 5 3 Clearance H WR QXPEHUV LQ WKH I...

Page 33: ...single rack insert a dummy module to the right of the CPU order no 6ES7 370 0AA01 0AA0 This gives you the option of inserting a second rack for your application in the future simply by replacing the dummy module with an interface module and without having to reinstall and rewire the first rack 5XOHV UUDQJLQJ PRGXOHV RQ D VLQJOH UDFN The following rules apply to single rack module installations No ...

Page 34: ...face modules IM Interface modules route the backplane bus of an S7 300 to the next rack The CPU is always located on rack 0 Table 5 4 Interface modules Overview KDUDFWHULVWLFV 7ZR RU PRUH URZV RZ FRVW URZ FRQILJXUDWLRQ Send IM in rack 0 IM 360 Order No 6ES7 360 3AA01 0AA0 IM 365 Order No 6ES7 365 0AB00 0AA0 Receive IM in rack 1 to 3 IM 361 Order No 6ES7 361 3CA01 0AA0 IM 365 hardwired to send IM 3...

Page 35: ...mited by the permitted current load on the S7 300 backplane bus The total power consumption must not exceed 1 2 A per row 1RWH The power consumption of the individual modules is given in the 0RGXOH DWD 5HIHUHQFH 0DQXDO 5XOHV QWHUIHUHQFH SURRI LQVWDOODWLRQ RI WKH FRQQHFWLRQ Special shielding and grounding measures are not required if you interconnect the CU and EM using suitable interface modules S...

Page 36: ...SM 4 SM5 SM6 SM7 SM8 PS PS 4 3 2 1 5 4 5 5 6 SM1 SM2 SM3 SM4 SM5 SM6 SM7 SM8 SM1 SM2 SM3 SM4 SM5 SM6 SM7 SM8 SM1 SM2 SM3 SM4 SM5 SM6 SM7 SM8 IM IM IM IM Figure 5 5 Full assembly using racks 7KH GLDJUDP LOOXVWUDWHV XQGHU QXPEHU Rack 0 central unit Rack 1 expansion module Rack 2 expansion module Rack 3 expansion module Connection cable 368 Restriction for CPU 31xC when this CPU is used you must not ...

Page 37: ...nt conditions at the cabinet s place of installation The specified mounting clearance for racks rails Total power loss of all components in the cabinet The ambient conditions temperature humidity dust chemical influence explosion hazard at the cabinet s place of installation determine the degree of protection IP xx required for the cabinet 5HIHUHQFH IRU GHJUHHV RI SURWHFWLRQ Further information on...

Page 38: ...et suitable for an S7 300 installation Space required for racks rails Minimum clearance between the racks and cabinet walls Minimum clearance between the racks Space required for cable ducts or fans Position of the stays DUQLQJ Modules may get damaged if exposed to inadmissible ambient temperatures 5HIHUHQFH IRU DPELHQW WHPSHUDWXUHV Information on permissible ambient temperatures is in the Appendi...

Page 39: ... wall only low power losses permitted In most cases heat concentration develops at the top of the cabinet interior Heat dissipation only across the cabinet wall Forced convection of the interior air improves heat dissipation and prevention of heat concentration Heat dissipation by heat exchange between heated internal air and cool external air The increased surface of the pleated profile of the he...

Page 40: ...evice configuration should be installed in a cabinet Central unit 150 W Expansion modules each with 150 W Load power supply under full load 200 W This results in a total power loss of 650 W 3RZHU ORVV GLVVLSDWHG The diagram in the figure below shows guide values for the permitted ambient air temperature of a cabinet with the dimensions 600 mm x 600 mm x 2 000 mm depending on power loss these value...

Page 41: ...convection and forced ventilation by equipment fans 5HVXOW From the diagram we can see that the following ambient temperatures are obtained for a total power loss of 650 W Table 5 6 Choice of cabinets DELQHW GHVLJQ 0D LPXP SHUPLWWHG DPELHQW WHPSHUDWXUH Closed with natural convection and forced ventilation Curve 3 Operation not possible Open with through ventilation Curve 2 approx 38 C Closed with ...

Page 42: ...circuit and overload protection to VDE 0100 and VDE 0113 Load power supplies and load circuits Grounding concept 1RWH An S7 300 can be used in many different ways so we can only describe the basic rules for the electrical installation in this document You must observe at least these basic rules if you want your S7 300 to operate free of trouble HILQLWLRQ URXQGHG SRZHU VXSSO 3 1 The neutral is grou...

Page 43: ...ing devices for control systems sensors and actuators 1 Part 460 Master switch Part 1 Circuit breaker Short circuit overload protection In groups for sensors and actuators 2 Part 725 Single pole fusing of circuits Part 1 In the case of a grounded secondary circuit Provide single pole protection Otherwise Provide all pole protection Load power supply for AC load circuits with more than five electro...

Page 44: ...mplete with a grounded reference potential so if you wish to install an S7 300 with grounded reference potential then you do not need to make any changes to your CPU URXQGHG UHIHUHQFH SRWHQWLDO RI WKH 38 The diagram illustrates an S7 300 configuration with ungrounded reference potential M L M 10M 100 nF M 1 3 2 Figure 5 7 CPU with grounded reference potential as supplied 7KH GLDJUDP LOOXVWUDWHV XQ...

Page 45: ...e S7 300 may require configuration with grounded reference potential due to ground fault monitoring This is the case for example in chemical industry and power stations 8QJURXQGHG UHIHUHQFH SRWHQWLDO RI 38 DQG 3 The diagram illustrates an S7 300 configuration with floating reference potential M M L M 10M 100 nF 3 2 1 Figure 5 8 Creating an ungrounded reference potential on a CPU 7KH GLDJUDP LOOXVW...

Page 46: ... reference potentials of the control circuit Minternal and load circuit Mexternal are electrically isolated SSOLFDWLRQ Use isolated modules for All AC load circuits DC load circuits with separate reference potential Examples DC load circuits whose sensors have different reference potentials for example if grounded sensors are located at some considerable distance from the control system and no equ...

Page 47: ...ows a sample configuration of a CPU 31xC with isolated modules The connection is automatically generated for the CPU 31xC 1 N L1 L M PS S7 300 CPU µ P L1 N M external L U internal M internal Data L1 N DI DO PE Ground bus in cabinet AC 230 V load power supply DC 24 V load power supply 1 Figure 5 9 Configuration with isolated modules ...

Page 48: ...rically isolated DPSOH For operation with an SM 334 AI 4 AO 2 analog I O module you must connect one of the grounding terminals Manalog to the CPU s chassis ground The figure below shows a sample configuration of an S7 300 CPU with non isolated modules L N M L1 L M PS S7 300 CPU µ P L1 N U internal M internal Data 4AI 2AO PE 1 mm 2 Manalog M external V A D A A D Ground bus in cabinet DC 24 V load ...

Page 49: ...that the system user is protected from electrical shock It also deflects interference which is emitted from external power supply cables and signal cables to cables connected to I O devices 0HDVXUHV IRU SURWHFWLYH JURXQGLQJ The table below shows an overview of the most important measures for protective grounding Table 5 8 Protective grounding measures HYLFH 0HDVXUHV Cabinet mounting structure Conn...

Page 50: ...f analog signals some mA or µA are transmitted or if foil shielding is used static shielding 1RWH Potential differences between two grounding points might cause an equipotential current flow across shielding connected at both ends In this case you should install an additional equipotential bonding conductor DXWLRQ Always avoid the flow of operating current to ground HWDLOV RQ FDEOH VKLHOGLQJ DQG H...

Page 51: ...nect the load voltage reference potential Mexternal for the various configuration versions Table 5 9 Connection of the load voltage reference potential QVWDOODWLRQ 1RQ LVRODWHG PRGXOHV VRODWHG PRGXOHV 5HPDUNV grounded Connect Mexternal with M on the CPU Connect or do not connect Mexternal to the common grounding line ungrounded Connect Mexternal with M on the CPU Connect or do not connect Mexterna...

Page 52: ... give you a clear overview Cabinet Rail PS CPU SM L1 N L M µP AC AC AC AC DC DC L1 L2 L3 N PE 1 Low voltage distribution e g TN S system 3 x 400 V Ground bus in cabinet AC 24 to 230 V load circuit for AC modules DC 5 to 60 V load circuit for non isolated DC modules DC 5 to 60 V load circuit for isolated DC modules Signal modules 1 3 2 2 2 4 Figure 5 11 Grounding concept for the S7 300 with CPU 31x...

Page 53: ...U SM Signal modules L1 N L M µP AC AC AC AC DC DC L1 M L2 L3 N PE AC 24 to 230 V load circuit for AC modules DC 5 to 60 V load circuit for non isolated DC modules DC 5 to 60 V load circuit for isolated DC modules Low voltage distribution e g TN S system 3 x 400 V Ground bus in cabinet 1 2 2 2 3 4 5 Figure 5 12 Grounding concept for the S7 300 excluding CPU 31xC Table 5 11 Connection of the load vo...

Page 54: ...utput voltage tolerances 20 4 V to 28 8 V 40 8 V to 57 6 V 51 V to 72 V 5HTXLUHPHQWV IRU ORDG SRZHU VXSSOLHV It must provide an extra low voltage of 60 VDC and be safely isolated from mains Safe isolation from mains can be realized for example in accordance with VDE 0100 Part 410 HD 384 4 41 IEC 364 4 41 as functional extra low voltage with safe isolation or VDE 0805 EN 60950 IEC 950 as safety ext...

Page 55: ...owering the CPU the PS 307 also supplies the load current for the 24 VDC modules 1RWH The arrangement of supply connections displayed does not correspond with the physical arrangement it was merely selected to give you a clear overview N M L1 M PS S7 300 CPU µP L1 L2 L3 N PE SM Rail Low voltage distribution e g TN S system 3 x 400 V Ground bus in cabinet DC 24 V load circuit for DC modules L Signa...

Page 56: ... operation as PG interface for networking just a few CPUs or for exchanging small volumes of data with PGs MPI always retains the last configuration of the transmission rate node number and highest MPI address even after memory reset voltage failure or deletion of the CPU parameter configuration 352 86 YDLODELOLW 38V ZLWK 3 LQ WKHLU QDPH KDYH D 3 LQWHUIDFH H J 38 3 PROFIBUS in the SIMATIC open mul...

Page 57: ...change and offers offsite networking options via gateway With S7 300 CPUs you can implement Industrial Ethernet connections only with the help of communication processors FWXDWRU VHQVRU LQWHUIDFH 6 PSOHPHQWDWLRQ XVLQJ FRPPXQLFDWLRQ SURFHVVRUV 3 The ASI or actuator sensor interface represents a subnet system on the lowest process level for automation systems It is used especially for networking dig...

Page 58: ...lso limited by the permitted line length depending on the transmission rate 7UDQVPLVVLRQ UDWH These maximum transmission rates are possible MPI CPU 317 2 DP 12 Mbps All other CPUs 187 5 Kbps PROFIBUS DP 12 Mbps PtP Half duplex 38 4 Kbps Full duplex 19 2 Kbps 1XPEHU RI QRGHV Maximum possible number of nodes per subnet Table 5 13 Nodes on the subnet 3DUDPHWHUV 03 352 86 3 3W3 Number 127 126 1 2 Addr...

Page 59: ... DGGUHVVHV The table below shows you the factory setting of the MPI PROFIBUS DP addresses and the highest default MPI PROFIBUS DP addresses for the devices Table 5 14 MPI PROFIBUS DP addresses 1RGH GHYLFH HIDXOW 03 352 86 3 DGGUHVV HIDXOW KLJKHVW 03 DGGUHVV HIDXOW KLJKHVW 352 86 3 DGGUHVV PG 0 32 126 OP 1 32 126 CPU 2 32 126 5XOHV VVLJQLQJ 03 352 86 3 DGGUHVVHV Note the following rules before assi...

Page 60: ...I address 1 MPI address 2 6SHFLDO IHDWXUHV 38 3 This CPU uses only one MPI address including the CPs connected 5HFRPPHQGDWLRQV IRU WKH 03 DGGUHVV Q Reserve MPI address 0 for a service PG or 1 for a service OP You can later connect them temporarily to the subnet Also assign other MPI addresses to PGs OPs operating on the MPI subnet Recommended MPI address for the CPU in case of replacement or servi...

Page 61: ...DELOLW Q DOO WKH 38V GHVFULEHG LQ WKLV GRFXPHQW The MPI Multipoint Interface represents the CPU s interface for PG OP connections or for communication in an MPI subnet The typical default baud rate for all CPUs is 187 5 Kbps You can also set the rate to 19 2 Kbps for communication with an S7 200 Other baud rates are only possible with CPU 317 2 DP up to 12 Mbps The CPU broadcasts its bus parameter...

Page 62: ... Possible interface operating modes for CPU 317 2 DP 03 3 LQWHUIDFH 352 86 3 LQWHUIDFH MPI DP master DP slave 1 Not assigned DP master DP slave 1 1 Excluded DP slave at both interfaces simultaneously 1RWH RU WKH 3 LQWHUIDFH LQ VODYH PRGH If you have disabled the Commissioning Test mode check box in the DP interface properties in STEP 7 the baud rate you have set will be ignored and the master s ba...

Page 63: ...W3 PG PC OP TP S7 300 400 with MPI interface S7 200 19 2 Kbps only PG PC OP TP DP slaves DP master Actuators Sensors S7 300 400 with PROFIBUS DP interface Devices equipped with a serial port e g barcode readers printers etc XUWKHU LQIRUPDWLRQ Further information on specific connections can be found in the RPPXQLFDWLRQ ZLWK 6 0 7 manual Details on PtP communication is found in the 7HFKQRORJLFDO XQF...

Page 64: ...1 830 0DH10 PROFIBUS bus cable with PE sheath for the food and beverages industry 6XV1 830 0BH10 PROFIBUS bus cable for festooning 6XV1 830 3CH10 3URSHUWLHV RI 352 86 FDEOHV The PROFIBUS cable is a shielded twisted pair cable with copper conductors It is used for line transmission in accordance with US Standard EIA RS485 The table below lists the characteristics of these bus cables Table 5 19 Char...

Page 65: ...BUS you can find further information on this topic in the SIMATIC NET PROFIBUS Networks Manual 56 EXV FRQQHFWRU Table 5 21 Bus connector 7 SH 2UGHU 1R RS485 bus connector up to 12 Mbps with 90 cable exit without PG interface with PG interface 6ES7 972 0BA11 0XA0 6ES7 972 0BB11 0XA0 Fast Connect RS485 bus connector up to 12 Mbps with 90 cable exit with insulation displacement technology without PG ...

Page 66: ...JWKV RQJHU FDEOH OHQJWKV If you want to implement cable lengths above those permitted in a segment you must use RS485 repeaters The maximum cable length possible between two RS485 repeaters corresponds to the cable length of a segment see the following Chapter Please note that these maximum cable lengths only apply if no other node is interconnected between the two RS485 repeaters You can connect ...

Page 67: ...EOH OHQJWKV IRU 3 SDWFK FRUGV can be found in the Chapter DEOH OHQJWKV DEOH HQJWK 03 VXEQHW VHJPHQW You can implement cable lengths of up to 50 m in an MPI subnet segment This 50 m applies from the first node to the last node in the segment Table 5 24 Permitted cable lengths in an MPI subnet segment 7UDQVPLVVLRQ UDWH 6 38V QRQ LVRODWHG 03 LQWHUIDFH ZLWKRXW 38 3 38 3 19 2 kbps 187 5 kbps 50 m 1 000...

Page 68: ...hen you must consider the maximum possible length of the stub cable The following table lists the maximum permitted lengths of stub cables per segment Table 5 26 Stub cable lengths per segment 1XPEHU RI QRGHV ZLWK VWXE FDEOH OHQJWK RI 7UDQVPLVVLRQ UDWH 0D OHQJWK RI VWXE FDEOHV SHU VHJPHQW P RU P 0 9 6 kbps to 93 75 kbps M 96 32 32 187 5 kbps M 75 32 25 500 kbps M 30 20 10 1 5 Mbps M 10 6 3 3 Mbps ...

Page 69: ...PI addr 4 MPI addr 5 MPI addr 6 MPI addr 7 PROFIBUS 4 MPI addr 9 MPI addr 8 MPI addr 10 MPI addr 11 MPI addr 12 OP 27 MPI addr 13 MPI addr 0 3 3 Figure 5 14 Example of an MPI subnet H WR QXPEHUV LQ WKH ILJXUH Terminating resistor inserted S7 300 and OP 27 have subsequently been connected to the MPI subnet using their MPI default address CPU 31xC 312 314 315 2 DP You can also assign MPI addresses o...

Page 70: ... repeaters max 50 m max 50 m PG PG RS 485 Repeater max 1000 m 3 S7 300 CPU PS CPU MPI addr 3 3 S7 300 CPU PS CPU MPI addr 5 3 S7 300 CPU PS CPU MPI addr 6 MPI addr 4 OP 27 MPI addr 7 3 S7 300 CPU PS CPU MPI addr 8 RS 485 Repeater MPI addr 9 OP 27 3 S7 300 CPU PS CPU MPI addr 10 MPI addr 11 OP 27 MPI addr 0 1 1 1 1 1 1 2 Figure 5 15 Example Maximum distances in the MPI subnet H WR QXPEHUV LQ WKH IL...

Page 71: ... addr 2 PROFIBUS addr 3 PROFIBUS addr 4 PROFIBUS addr 5 PROFIBUS addr 6 PROFIBUS addr 7 3 CPU PS ET 200M CPU PS ET 200M CPU PS ET 200 M 3 S7 300 CPU PS DP CPU CPU PS ET 200M CPU PS ET 200M CPU ET 200B ET 200B CPU ET 200B CPU ET 200B PROFIBUS addr 12 PROFIBUS addr 11 PROFIBUS addr 10 PROFIBUS addr 9 PROFIBUS addr 8 1 1 2 Figure 5 16 Example of a PROFIBUS subnet H WR QXPEHUV LQ WKH ILJXUH Terminatin...

Page 72: ...interface as DP master RS 485 Repeater 1 MPI addr 2 MPI addr 3 MPI addr 4 MPI addr 6 MPI addr 5 OP 27 MPI addr 7 MPI addr 8 MPI addr 0 S7 300 CPU PS CPU S7 300 PS CPU OP 27 CPU PS DP CPU ET200M ET200M ET200M ET200M ET200M ET200M ET200B ET200B S5 95U S5 95U S5 95U 2 1 1 1 1 1 DP addr 2 DP addr 3 DP addr 4 DP addr 9 DP addr 8 DP addr 10 DP addr 11 DP addr 5 DP addr 6 DP addr 7 Figure 5 17 Example CP...

Page 73: ...ty After having configured all networks in NETPRO you have initiated a new compilation for all stations and downloaded the configuration to every module capable of routing This also applies to all changes made in the network Thus every router knows all possible paths to a target station MPI 1 PG PC 1 PG PC 2 PG PC 3 S7 400 S7 300 CPU ET200 CPU PS CPU 31x 2 DP CPU PS CPU CPU PS CPU 417 CPU PS CPU C...

Page 74: ...e figure below illustrates where the terminating resistors must be connected in an MPI subnet In this example the programming device is connected via a stub cable during commissioning or maintenance only OP 27 PG PG RS 485 Repeater 1 CPU PS ET 200 M S7 300 CPU PS CPU CPU PS ET 200 M S7 300 CPU PS CPU CPU PS ET 200 M S7 300 CPU PS CPU OP 27 CPU PS ET 200 M S7 300 CPU PS CPU 1 1 2 1 Installing Figur...

Page 75: ...both ends with the terminating resistor This for example is not the case if the last slave with bus connector is off power Since the bus connector draws its power from the station the terminating resistor has no effect Please make sure that power is always supplied to stations on which the terminating resistor is active As an alternative you can also use the PROFIBUS Terminator as active bus termi...

Page 76: ... RQILJXULQJ S7 300 Automation System Hardware and Installation CPU 31xC and CPU 31x 5 50 A5E00105492 03 ...

Page 77: ...IEC 61131 2 and EU directive 73 23 EEC Low Voltage directive and to UL CSA Approval an open type In order to conform with specifications on safe operation relating to mechanical strength inflammability stability and touch protection the following alternative installation modes are prescribed Installation in a suitable cubicle Installation in a suitable cabinet Installation in an appropriately equi...

Page 78: ...r labeling strips are available on the Internet at http www ad siemens de cs info under article ID 11978022 1 bus connector For electrical interconnection of modules Signal module SM Function Module FM 1 labeling strip for labeling module I O Tip Templates for labeling strips are available on the Internet at http www ad siemens de cs info under article ID 406745 1 bus connector For electrical inte...

Page 79: ...rews diverse M6 screws length depends on the place of installation with nuts and spring lock washers screw fastening the modules on the rail screwdriver with 3 5 mm blade width cylindrical design pulling out the grounding slide contact in the floating state screwdriver with 3 5 mm blade width cylindrical design QVWDOOLQJ WKH UDLO QWURGXFWLRQ rails are available in two versions Ready to use in four...

Page 80: ...st stabilize it by providing additional holes for fixing it with more screws Mark out these holes along the groove in the middle section of the rail see the Figure below The pitch should be approx 500 mm 4 Drill the marked holes to a diameter of 6 5 0 2 mm for M6 screws 5 Attach an M6 screw for fixing the ground conductor 3 4 5 2 1 Figure 6 1 Holes for mounting the 2 m rail H WR QXPEHUV LQ WKH ILJ...

Page 81: ...mm Length of rail Dimension a Dimension b 160 mm 10 mm 140 mm 482 6 mm 8 3 mm 466 mm 530 mm 15 mm 500 mm 830 mm 15 mm 800 mm L LQJ VFUHZV You can use the following type of screw to mount the rails RU 7 SH RI VFUHZ HVFULSWLRQ Cylindrical head screw M6 to ISO 1207 ISO 1580 DIN 84 DIN 85 Lateral fixing screws M6 hexagonal head screw to ISO 4017 DIN 4017 additional fixing screws only 2 m rail Cylindri...

Page 82: ...w 2 Mark up the mounting holes on the mounting surface Drill the holes to a diameter of 6 5 0 2 mm 3 Screw on the rail M6 screws 1RWH Take care to create a low impedance connection between the rail and a mounting surface which is a grounded metal plate or equipment mounting plate In the case of varnished or anodized metals for instance use a suitable contacting agent or contact washers 20 mm SIEME...

Page 83: ...PU 3 signal modules function modules communication modules interface modules 1RWH If you install SM 331 analog input modules please check EHIRUH installation whether you have to reposition the measuring range submodules at the side of the module See Chapter 4 on analog modules in the 0RGXOH DWD Reference Manual 1RWH If you want to create the S7 300 with a floating reference potential you must esta...

Page 84: ...nector is included per module but not for the CPU Always start at the CPU when you plug in the bus connectors Here take the bus connector of the last module in the row Insert the bus connectors into the other modules The last module is not equipped with a bus connector CPU 2 Lower each module onto the rail in the intended order slide each module in turn to the module on the left and pivot the modu...

Page 85: ...to assign the modules in the configuration table in 67 3 The table below shows the slot number assignment Table 6 4 Slot numbers for S7 modules 6ORW QXPEHU 0RGXOH 5HPDUNV 1 Power supply PS 2 CPU 3 Interface module IM To the right of the CPU 4 1st signal module To the right of the CPU or IM 5 2nd signal module 6 3rd signal module 7 4th signal module 8 5th signal module 9 6th signal module 10 7th si...

Page 86: ...corresponding slot number in front of the relevant module 2 Insert the pin into the opening on the module 1 3 Press the slot number into the module 2 The slot number breaks off from the wheel The figure below illustrates this procedure The slot number labels are included with the CPU 1 2 CPU PS Figure 6 3 Inserting slot numbers in modules ...

Page 87: ...FFHVVRULHV UHTXLUHG To wire the S7 300 you require the accessories listed in the table below Table 7 1 Wiring accessories FFHVVRULHV HVFULSWLRQ Front connector for the connection of system sensors actuators to the S7 300 Labeling strips for labeling the module I O Shielding contact element shielding terminals matching the shielding diameter for connecting cable shielding ...

Page 88: ...cable 3 x 1 5 mm 2 If required wire end ferrules to DIN 46228 Wiring the front connector Screwdriver with a blade width of 3 5 mm side cutter wire stripping tool Flexible cable 0 25 mm 2 to 0 75 1 5 mm 2 If required shielded cables If required wire end ferrules to DIN 46228 ULHI RYHUYLHZ RI WKH SRZHU VXSSO PRGXOH DQG 38 Table 7 2 Conditions for connecting the PS and CPU RQQHFWDEOH FDEOHV WR 36 DQG...

Page 89: ...o 0 75 mm 2 0 25 mm 2 to 0 75 mm 2 Potential supply 1 5 mm 2 Number of conductors per terminal 1 conductor or 2 conductors up to 1 5 mm 2 total in a common wire end ferrule 1 conductor or 2 conductors up to 0 75 mm 2 total in a common wire end ferrule Diameter of the conductor insulation max 3 1 mm max 2 0 mm for 40 conductors max 3 1 mm for 20 conductors Stripped length 6 mm 6 mm Wire end ferrule...

Page 90: ...otective conductor bolt Minimum cross section of the protective conductor 10 mm 2 The figure below shows how the protective conductor must be bonded to the rail Figure 7 1 connecting the protective conductor to the rail 1RWH Always ensure a low impedance connection of the protective conductor You can achieve this by bonding a cable with low impedance and as short as possible to a large contact sur...

Page 91: ...HWWLQJ WKH PDLQV YROWDJH VHOHFWRU VZLWFK Check to see whether the selector switch is set to the correct mains voltage You can change the selector switch setting as follows 1 Remove the protective cap with a screwdriver 2 Set the selector switch to the available line voltage 3 Replace the cover CPU PS 1 2 Figure 7 2 Setting the mains voltage selector switch for the PS 307 H WR QXPEHUV LQ WKH ILJXUH...

Page 92: ...ply of I O modules 1RWH The power supply connection of your CPU can be inserted and removed DUQLQJ You may come into contact with live wires if the power supply module and any additional load power supply units are connected to the mains You should therefore disconnect the S7 300 from the power supply before starting the wiring Only use ferrules with insulating collars to press fit onto the ends o...

Page 93: ...ing cables for the CPU power supply to a length of 11 mm Connect the lower terminals M and L on the PS 307 to terminals M and L on the CPU DUQLQJ Reversing the polarity of the M and L terminals trips the internal fuse on your CPU Always connect the M terminal of the power supply and CPU and the L terminal of the power supply and CPU to one another 6 Close the front panel The figure below illustrat...

Page 94: ...erminals 40 pin front connectors are required for CPUs 31xC and 32 channel signal modules You must use the following front connectors depending on the module Table 7 4 Assignment of front connectors to modules 0RGXOH URQW FRQQHFWRUV ZLWK VFUHZ WHUPLQDOV 2UGHU 1R URQW FRQQHFWRUV ZLWK VSULQJ WHUPLQDOV 2UGHU 1R Signal modules not 32 channel Function modules Communication module CP 342 2 6ES7 392 1AJ0...

Page 95: ... slips sideways or if you insert the wrong size of screwdriver Always slide a suitable screwdriver vertically into the desired opening until it reaches the stop This will ensure that the spring terminal is fully open 7LS There is a separate opening for test probes up to 2 mm in diameter to the left of the opening for the screwdriver 5HTXLUHPHQW The modules SM FM CP 342 2 are mounted on the rail ...

Page 96: ...he power supply 2 Open the front panel 3 Move the front connector into wiring position Slide the front connector into the signal module until it latches The front connector still protrudes from the module in this position Advantage of the wiring position Easy wiring In this wiring position the front connector does not contact the module 4 Strip the leads to a length of 6 mm 5 Crimp on the cable en...

Page 97: ... until you have reached terminals 21 and 1 2 I QRW Starting at terminal 1 work your way up to terminal 20 Starting at terminal 1 or 21 wire the connector working in alternating passes from terminals 2 22 3 23 etc until you have reached terminals 20 and 40 3 URQW FRQQHFWRUV ZLWK VFUHZ WHUPLQDOV Screw tighten unused terminals also 4 Place the accompanying strain relief around the cable line and the ...

Page 98: ...in the module the unlocking mechanism automatically returns to initial position when you release it Tighten the mounting screw in the center of the connector This pulls the front connector completely into contact with the module 1 1RWH When you insert the front connector into the module an encoding mechanism engages in the front connector thus ensuring that the connector can only be inserted in mo...

Page 99: ...ng the labeling strips to modules 0RGXOH DEHOLQJ VWULS 2UGHU 1R Signal modules not 32 channel Function modules Communication module CP 342 2 6ES7 392 2XX00 0AA0 Signal modules 32 channel 6ES7 392 2XX10 0AA0 DEHOLQJ DQG LQVHUWLQJ ODEHOLQJ VWULSV 1 Label the strips with the addresses of the sensors actuators 2 Slide the labeled strips into the front panel CPU PS Figure 7 5 Slide the labeled strips i...

Page 100: ...minals DEOH ZLWK VKLHOGLQJ GLDPHWHU 6KLHOGLQJ WHUPLQDO 2UGHU 1R 2 cables each one with a shielding diameter of 2 to 6 mm 6ES7 390 5AB00 0AA0 1 cable with a shielding diameter of 3 to 8 mm 6ES7 390 5BA00 0AA0 1 cable with a shielding diameter of 4 to 13 mm 6ES7 390 5CA00 0AA0 The shielding contact element width is 80 mm It provides termination space in two rows each one for 4 shielding terminals 0R...

Page 101: ...Bracket of shielding contact element Edge of bracket where the shielding terminal s must be placed Shielding terminals 7HUPLQDWLQJ FDEOHV Only one or two shielded cables can be terminated per shielding terminal see the figure below The cable is clamped in at the stripped cable shielding 1 Strip the cable shielding to a length of at least 20 mm 2 Clamp in the stripped cable shielding underneath the...

Page 102: ...U PS 2 2 2 1 Figure 7 7 Connecting 2 wire cables to the shielding contact element 7KH GLDJUDP LOOXVWUDWHV XQGHU QXPEHU Magnified view of shielding terminal Wiring of shielding terminal 7LS For your connection to the front connector leave a sufficient cable length behind the shielding terminal This allows you to disconnect the front connector e g for repairs without having to open the shielding con...

Page 103: ... same wires to the same terminal e g always wire green to terminal A and red to terminal B 4 Press the cable sheath into the clamp Take care that the bare shielding contacts the shielding contact surface 5 Screw tighten the wire terminals 6 Close the bus connector housing DVW RQQHFW EXV FRQQHFWRU 1 Strip the bus cable Details on stripped lengths are found in the product information included with t...

Page 104: ...e terminating resistor is active Terminating resistance switched on Terminating resistance switched off on off On Off on off On Off Figure 7 8 Bus connector Enabled and disabled terminating resistor 5HPRYLQJ EXV FRQQHFWRUV With a looped through bus cable you can unplug the bus connector from the PROFIBUS DP interface at any time without interrupting data communication on the network 3RVVLEOH GDWD ...

Page 105: ...addressing default addressing a module start address is allocated to each slot number This is a digital or analog address depending on the type of module This section shows you which module start address is assigned to which slot number You need this information to determine the start addresses of the installed modules 0D LPXP DVVHPEO DQG WKH FRUUHVSRQGLQJ PRGXOH VWDUW DGGUHVVHV The figure below s...

Page 106: ...560 688 8 8 8 48 80 112 448 576 704 9 9 9 52 84 116 464 592 720 10 10 10 56 88 120 480 608 736 11 11 11 60 92 124 496 624 752 Slot number Slot number Slot number BG initial address digital BG initial address digital BG initial address digital BG initial address analog BG initial address analog BG initial address analog SF SF BUSF BUSF DC5V DC5V FRCE FRCE RUN RUN STOP STOP SIEMEN S CPU PS IM IM SM ...

Page 107: ...GGUHVVLQJ Optimization of the address areas available since address gaps will not occur between the modules When creating standard software you can program addresses which are independent of the relevant S7 300 configuration GGUHVVLQJ 6LJQDO 0RGXOHV QWURGXFWLRQ This section shows you how to address signal modules You need this information in order to be able to address the channels of the signal m...

Page 108: ... so that it has default start address 0 The start address of every subsequent digital module will be incremented by 4 per slot see diagram under 6ORW EDVHG PRGXOH DGGUHVVLQJ The figure below shows you how the addresses of the individual channels of a digital module are obtained 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7 Byte address start address of modules Byte address start address of modules 1 Bit address...

Page 109: ... 4 5 6 7 0 1 2 3 4 5 6 7 Address 0 0 Address 1 7 Address 1 1 Address 1 0 Address 0 7 Address 0 1 Figure 8 3 I O Addresses of a digital module in Slot 4 GGUHVVHV RI WKH DQDORJ PRGXOHV The address of an analog input or output channel is always a word address The channel address depends on the module start address Insert the first analog module into slot 4 so that it has default start address 256 The...

Page 110: ...RCE RUN STOP SIEMENS CPU PS SM SM analog module Channel 0 address 256 Channel 1 address 258 Channel 0 address 256 Channel 1 address 258 Figure 8 4 I O addresses of an analog module in Slot 4 GGUHVVLQJ WKH QWHJUDWHG 2 RI WKH 38 38 The integrated inputs and outputs of this CPU have the following addresses Table 8 1 Integrated inputs and outputs on the CPU 312C QSXWV 2XWSXWV HIDXOW DGGUHVVHV 5HPDUNV ...

Page 111: ...Analog outputs 752 to 755 All digital inputs can be programmed as interrupt input Optional technological functions Counting Frequency measurement Pulse width modulation 38 3W3 DQG 38 3 The integrated inputs and outputs of these CPUs have the following addresses Table 8 3 Integrated inputs and outputs on the CPU 313C 2 PtP DP QSXWV 2XWSXWV HIDXOW DGGUHVVHV 5HPDUNV 16 digital inputs 124 0 to 125 7 o...

Page 112: ...uency measurement Pulse width modulation Positioning 5HPDUNV You cannot influence outputs with transfer instructions if they are assigned to technological functions I O not configured for technological functions can be used as standard I O RQVLVWHQW DWD RQVLVWHQW GDWD The table below illustrates the points to consider with respect to communication LQ D 3 PDVWHU V VWHP if you want to transfer I O a...

Page 113: ...r you general information without claiming completeness of this topic URVV UHIHUHQFH Note the information about commissioning provided in the descriptions of your plant section and equipment RPPLVVLRQLQJ 3URFHGXUH 5HTXLUHPHQWV To utilize the full functional scope of the CPUs you require STEP 7 V 5 1 SP 4 and higher for CPUs 31xC 312 314 and 316 2 DP STEP 7 V 5 2 SP 1 and higher for CPU 317 2 DP S7...

Page 114: ...ng output data from your outputs to a data block allows you to check the status of the outputs at any time Preparing the CPU Connecting the PG in the Chapter RQQHFWLQJ WKH 3 Commission the CU with inserted power supply module and CPU First switch on the expansion modules EMs which are equipped with an auxiliary power supply module and then switch on the power supply module of the CD in Chapter QLW...

Page 115: ...odule SM 374 for example in the 67 3 Programming Manual in Chapter 7HVWLQJ XQFWLRQV LDJQRVWLFV DQG DXOW OLPLQDWLRQ Commission PROFIBUS DP or other networks in Chapter RPPLVVLRQLQJ 352 86 3 Connect the outputs Commissioning the outputs successively DQJHU Proceed step by step Do not go to the next step unless you have completed the previous one without error error message 5HVSRQVH WR HUURUV React to...

Page 116: ...ble ducts installed properly Configuring Is the air convection OK Installation RQFHSW RI JURXQGLQJ DQG FKDVVLV JURXQG 3RLQWV WR EH DPLQHG 6 DUGZDUH DQG QVWDOODWLRQ KDSWHUV Have you established a low impedance connection large surface large contact area to local ground Configuring Appendix Are all racks rails properly connected to reference potential and local ground electrical connection or isolat...

Page 117: ...R EH H DPLQHG 6 DUGZDUH DQG QVWDOODWLRQ KDSWHUV 6HH UHIHUHQFH PDQXDO 6HFWLRQ Is the correct mains voltage set for all component Wiring Module Specifications 3RZHU VXSSO PRGXOH 3RLQWV WR EH H DPLQHG 6 DUGZDUH DQG QVWDOODWLRQ KDSWHUV 6HH UHIHUHQFH PDQXDO 6HFWLRQ Is the mains plug wired correctly Wiring Is mains voltage connected ...

Page 118: ...K For information on possible cable lengths refer to the Chapter RQILJXULQJ DEOH HQJWKV RQQHFWLQJ D 3 WR DQ 6 1 Connect the PG to the MPI interface of your CPU using a preassembled PG cable Alternatively you can produce the connecting leads with PROFIBUS cable and bus connectors yourself refer to Chapter LULQJ RQQHFWLQJ XV RQQHFWRUV The figure below illustrates the connection between PG and CPU SF...

Page 119: ... PG in the MPI subnet to the other nodes of the MPI subnet The following picture illustrates two networked S7 300s which are connected to one another using bus connectors PG S F BUS F DC5V FR CE R UN S T OP S IE ME N S CPU PS 2 SM SM 2 1 CPU PS Figure 9 2 Connecting a PG to multiple S7 300 PLCs 7KH GLDJUDP LOOXVWUDWHV XQGHU QXPEHU PROFIBUS bus cable Connector with inserted terminating resistor ...

Page 120: ...ese nodes must be equipped with a PG socket The figure below shows the interconnection of two networked S7 300 and a PG S F BUS F DC5V FR CE R UN S T OP S IE ME N S PS SM SF BUSF DC5V FRCE RUN STOP SIEMENS CPU PS SM PG 1 2 2 3 CPU Figure 9 3 Connecting a PG to a subnet 7KH GLDJUDP LOOXVWUDWHV XQGHU QXPEHU Stub cable used to create connection between PG and CPU Inserted terminating resistor of bus ...

Page 121: ...ZLWK 38V RQQHFWLQJ D 3 WR XQJURXQGHG QRGHV Always connect an ungrounded PG to ungrounded MPI subnet nodes or S7 300 PLCs RQQHFWLQJ D JURXQGHG 3 WR WKH 03 You want to operate with ungrounded nodes If the MPI at the PG is grounded you must interconnect the nodes and the PG with an RS485 repeater You must connect the ungrounded nodes to bus segment 2 if the PG is connected to bus segment 1 terminals ...

Page 122: ...eset DXWLRQ Data on a SIMATIC Micro Memory Card can be corrupted if you remove the card during write access In this case you might have to insert the MMC memory in your PG to delete it or you format the card in the CPU Never remove an MMC in RUN mode Always remove when power is off or when the CPU is in STOP state and when the is not writing to the card Disconnect the communication lines if you ar...

Page 123: ...se a small screwdriver or ball point pen to remove the MMC 3 Insert the new MMC into the MMC slot with the bevelled edge of the MMC pointing towards the ejector 4 Gently insert the MMC into the CPU until the MMC clicks into place 5 Reset the memory of the CPU VHH 5HVHWWLQJ 0HPRU YLD 0RGH 6HOHFWRU RI 38 CPU Figure 9 5 Insert the micro memory card into the CPU QVHUWLQJ DQG UHPRYLQJ DQ 00 ZKHQ 38 SRZ...

Page 124: ...300 The MMC is inserted in the CPU Your CPU s mode selector switch must be set to STOP QLWLDO SRZHU XS IRU D 38 ZLWK PLFUR PHPRU FDUG 00 Switch on the PS 307 power supply module 5HVXOW The 24 VDC LED on the power supply module is lit The 5 VDC LED on the CPU is lit The STOP LED flashes at 2 Hz when the CPU executes an automatic memory reset The STOP LED is lit after memory reset ...

Page 125: ...quested Additional information on MMC behavior after a memory reset can be found in the 38 DWD Reference Manual 0HPRU FRQFHSW chapter RZ WR UHVHW PHPRU There are two ways to reset CPU memory 0HPRU UHVHW ZLWK WKH PRGH VHOHFWRU VZLWFK 0HPRU UHVHW ZLWK 3 is described in this Chapter only possible if the CPU is in STOP mode see 67 3 2QOLQH HOS 38 PHPRU UHVHW ZLWK WKH PRGH VHOHFWRU VZLWFK The table bel...

Page 126: ...initiate the memory reset operation t on off 3 s max 3 s min 3 s STOP LED 1 2 3 CPU Figure 9 6 Using the mode selector switch to reset the memory If following a successful memory reset operation the CPU prompts you for another memory reset the MMC may need to be reformatted in certain cases VHH RUPDWWLQJ D 0LFUR 0HPRU DUG 00 6723 GRHV QRW IODVK GXULQJ WKH PHPRU UHVHW What should I do if the STOP L...

Page 127: ...iagnostics buffer You can read the diagnostic buffer with the PG see 67 3 2QOLQH HOS The MPI parameters MPI address and highest MPI address transmission rate configured MPI addresses of CPs FMs in an S7 300 The same also applies to the CPU 317 2 DP if the MPI DP interface of the CPU was assigned as a DP interface PROFIBUS address highest PROFIBUS address baud rate setting as active or passive inte...

Page 128: ...ntil the MMC is formatted except when the Load user program or promming operations are interrupted by a power OFF The MMC is only formatted if a reason for formatting exists see above and not for example when you are prompted for a memory reset after a module replacement In this case a switch to MRES triggers a normal memory reset for which the module content remains valid 8VH WKH IROORZLQJ VWHSV ...

Page 129: ...y Cards 6WDUWLQJ 6 0 7 0DQDJHU After installation the Windows desktop displays the 6 0 7 0DQDJHU icon and in the Start menu under 6 0 7 it displays the program item 6 0 7 0DQDJHU 1 Start SIMATIC Manager with a double click on the icon or via Start menu same as with all other Windows applications 8VHU LQWHUIDFH A corresponding editing tool pops up when you open the relevant objects Double click on ...

Page 130: ...DEOH This table created offline can be saved for future retrieval You can also test it after switching to online mode 9 7 VWUXFWXUH In the VAT every address to be monitored or modified e g inputs outputs occupies one row The meaning of the VAT columns is as follows ROXPQ WH W 7KLV ILHOG Operand contains the absolute address of the variable Symbol contains the symbolic descriptor of the variable Th...

Page 131: ...To update control values once select the menu item 9DULDEOH QDEOH FRQWURO YDOXHV or Enable control values permanently via menu item 9DULDEOH RQWURO 4 In the 0RQLWRU test function verify the control value entry in the variable V WKH FRQWURO YDOXH YDOLG You can disable the control value entered in the table An invalid value is displayed same as a comment You can re enable the control value Only vali...

Page 132: ...ing is set to RQFH the menu items 9DULDEOH 8SGDWH FRQWURO YDOXH or 9DULDEOH RQWURO have the same effect namely a one time assignment If trigger conditions are set to SHUPDQHQW the said menu items have different effects as described above If monitoring and controlling is set to the same trigger point monitoring is executed first With some CPU versions e g CPU 314 1AE03 values are not assigned at ev...

Page 133: ... CPU that is selected in the dialog window Menu item 3 RQQHFW WR YDLODEOH 38 is used to establish a connection to any CPU available on the network RQWUROOLQJ RXWSXWV LQ 38 6723 PRGH The function QDEOH 32 switches off output disable for the peripheral outputs PO thus enabling control of the PO in CPU STOP mode In order to enable the POs proceed as follows 1 In menu item 7DEOH 2SHQ WKH YDULDEOH WDEO...

Page 134: ...LVVLRQLQJ 352 86 3 5HTXLUHPHQWV Requirement for commissioning a PROFIBUS DP network is A PROFIBUS DP network has been created In 67 3 you have configured the PROFIBUS DP network and you have assigned all network nodes a PROFIBUS DP address and memory area see the Manual 6 0 7 67 3 9 RQILJXULQJ KDUGZDUH DQG FRQQHFWLRQV ZLWK 67 3 9 Note that you must also set address switches in some of the DP slave...

Page 135: ... different diagnostic addresses must be assigned for S7 slaves Diagnostic address of the slave address for slot 0 At this address all slave events are reported in the DP master station representative e g station failure Diagnostic address of the module address for slot 2 At this address all module e g CPU 313C 2 DP as I Slave events are reported in the master OB82 With a CPU as DP Slave for exampl...

Page 136: ...rt up the DP CPU checks the configured preset configuration of its DP master system against the actual configuration If preset configuration actual configuration the CPU switches to RUN mode If the preset configuration to the actual configuration the configuration of parameter VWDUW XS LI SUHVHW FRQILJXUDWLRQ z DFWXDO FRQILJXUDWLRQ determines the start up behavior of the CPU 6WDUW XS ZLWK SUHVHW F...

Page 137: ...sage 0RGXOH HUURU incoming event diagnostic address of the DP slave assigned to the DP master Variable OB82_MDL_STOP 1 DP slave STOP RUN Call of OB82 with the message 0RGXOH 2 outgoing event diagnostic address of the DP Slave assigned to the DP master Variable OB82_MDL_STOP 0 7LS When commissioning the CPU as DP master always program OB82 and OB86 This helps you to recognize and evaluate data exch...

Page 138: ... The DP master is configured and programmed If the MPI DP interface of CPU 317 2 DP is to be operated as DP interface you must configure the interface accordingly Prior to commissioning you must assign and configure the DP CPU as a DP slave That is in 67 3 you must switch on the CPU as DP slave assign a PROFIBUS address to the CPU assign a slave diagnostic address to the CPU specify whether the DP...

Page 139: ...mmissioning Test mode check box under the DP interface properties when you configure this slave CPU in STEP 7 RQILJXUDWLRQ DQG SDUDPHWHU DVVLJQPHQW PHVVDJH IUDPH 67 3 assists you during configuration and parameter assignment of the DP CPU Should you require a description of the configuration and parameter assignment frame in order to use a bus monitor for example you can find it on the Internet at...

Page 140: ...TOP RUN Call of OB82 with the message 0RGXOH 2 outgoing event diagnostic address of the DP slave assigned to the DP slave Variable OB82_MDL_STOP 0 7LS When commissioning the CPU as DP slave always program OB82 and OB86 This helps you to recognize and evaluate the respective operating states or data exchange errors 3URJUDPPLQJ VWDWXV FRQWURO YLD 352 86 As an alternative to the MPI interface you can...

Page 141: ...configure the I O address areas You can configure up to 32 I O address areas Maximum length per address area is 32 bytes You can configure a maximum of 244 input bytes and 244 outputs bytes The table below shows the principle of address areas You can also find this figure in the 67 3 configuration Table 9 10 Configuration example for the address areas in intermediate memory 7 SH 0DVWHU DGGUHVV 7 S...

Page 142: ...H 38 Q WKH 3 PDVWHU 38 L 2 T MB 6 L IB 0 Data pre processing in the DP slave T MB 7 L MW 6 T PQW 310 Forward data to the DP master L PIB 222 T MB 50 L PIB 223 processing data received in the DP master L B 16 3 I T MB 51 L 10 Data preparation in DP master 3 T MB 60 CALL SFC 15 Send data to DP slave LADDR W 16 0 RECORD P M60 0 Byte 20 RET_VAL MW 22 CALL SFC 14 LADDR W 16 D receive data from DP maste...

Page 143: ...e DP CPU for the intermediate memory You must not assign addresses specified for the intermediate memory again for the I O modules on the DP CPU When using consistent data areas in intermediate memory note the section on RQVLVWHQW DWD in Chapter GGUHVVLQJ 6 3 PDVWHU If you use an IM 308 C as a DP master and the DP CPU as a DP slave the following applies to the exchange of consistent data You must ...

Page 144: ...n PROFIBUS DP nodes Characteristic of direct data exchange is that PROFIBUS DP nodes listen on the bus for data a DP slave returns to its DP master This mechanism allows Listening stations receivers direct access to modified input data of remote DP slaves GGUHVV DUHDV In your 67 3 configuration of the relevant peripheral input addresses specify which address area of the receiving station is to rec...

Page 145: ...ct data exchange In the figure all DP masters DP slaves are a CPU 31x 2 DP 31xC 2 DP respectively Note that other DP slaves ET 200M ET 200X ET 200S can only operate as sending station CPU DP master 1 PROFIBUS CPU DP slave 3 DP slave 5 CPU DP slave 1 DP master system 1 DP master system 2 CPU DP master 2 CPU DP slave 2 CPU DP slave 4 Figure 9 8 Direct data exchange with CPUs 31x 2 DP 31xC 2 DP ...

Page 146: ... RPPLVVLRQLQJ S7 300 Automation System Hardware and Installation CPU 31xC and CPU 31x 9 34 A5E00105492 03 ...

Page 147: ...les Q WKLV KDSWHU we show you how to back up or update your operating system and to replace modules the back up rechargeable battery and the 120 230 VAC fuse of the digital output module 2SHUDWLQJ 6 VWHP DFN 8S Q ZKLFK VLWXDWLRQV VKRXOG EDFN XS WKH RSHUDWLQJ V VWHP In some cases we recommend that you back up your CPU s operating system For example you might want to replace the CPU in your plant wi...

Page 148: ...0AB0 V 1 0 0 or later MMC 4 MB 314C 2 PtP from 6ES7314 6BF00 0AB0 V 1 0 0 or later MMC 2 MB 317 2 DP from 6ES7317 2AJ10 0AB0 V 2 1 0 or later MMC 4 MB DFNXS RI RSHUDWLQJ V VWHP RQ 0LFUR 0HPRU DUG How to back up the operating system Table 10 1 Back up of operating system on MMC 6WHS FWLRQ UHTXLUHG 38 5HVSRQVH 1 Insert new micro memory card into the CPU The CPU requests memory reset 2 Turn the mode ...

Page 149: ...H RX XSGDWH LW If you back up your operating system on a blank MMC before the update you can reload the old operating system if any problems occur 8SGDWLQJ WKH 2SHUDWLQJ 6 VWHP How to update the operating system OS Table 10 2 Updating the operating system with MC MMC 6WHS FWLRQ UHTXLUHG 38 5HVSRQVH 1 Transfer update files to a blank MMC using STEP 7 and your programming device 2 De energize the CP...

Page 150: ...to 1 1 N m from 0 5 N m to 0 8 N m from 0 8 N m to 1 1 N m POWER OFF when replacing the Yes Yes S7 300 operating mode when replacing STOP Load voltage OFF when replacing the Yes Yes QLWLDO 6LWXDWLRQ The module you want to replace is still installed and wired You want to install the same type of module DUQLQJ Disturbances can corrupt data if you insert or remove S7 300 modules while data is being t...

Page 151: ...t 5 Press down the unlocking mechanism with one hand and with the other hand pull out the front connector at the grips Remove the fixing screw from the middle of the front connector Pull the front connector out holding it at the grips 6 Undo the module fixing screw s 7 Swing the module out CPU PS 1 2 3 4 Figure 10 1 Unlocking the front connector and removing the module 7KLV ILJXUH LOOXVWUDWHV WKH ...

Page 152: ...5492 03 5HPRYLQJ WKH IURQW FRQQHFWRU FRGLQJ SLQ IURP WKH PRGXOH Before you start installing the new module remove the upper part of the front connector coding pin from this module Reason This part is already inserted in the wired front connector Figure 10 2 Removing the front connector coding pin ...

Page 153: ...rips into the module CPU PS 1 2 4 3 Figure 10 3 Installing a new module 7KH ILJXUH LOOXVWUDWHV WKH GHVFULEHG VWHSV Lower module onto rail Tilt module down Screw the module in tightly Insert labeling strips 5HPRYLQJ WKH URQW RQQHFWRU RGLQJ If you want to take a used front connector to wire another module you can remove its coding mechanism Simply push out the front connector coding with a screwdriv...

Page 154: ...t panel 4 Switch the load voltage back on 5 Set the CPU to RUN mode again CPU PS 1 2 Figure 10 4 Inserting the front connector 7KH ILJXUH LOOXVWUDWHV WKH GHVFULEHG VWHSV Move the front connector into operating position Close front panel HKDYLRU RI 6 DIWHU PRGXOH UHSODFHPHQW After module replacement the CPU switches to run mode provided no error has occurred If the CPU maintains STOP status you can...

Page 155: ...217 008 Fuse holder Wickmann 19 653 DUQLQJ Improper handling of digital output modules could result in injury or damage to property Under the covers on the right side of the module there are dangerous voltages 25 VAC or 60 VDC Before opening these covers ensure that the front connector of the module is removed or that the module is disconnected from the supply voltage DUQLQJ Improper handling of f...

Page 156: ...ion of fuses in the digital output module 120 230 VAC 5HSODFLQJ IXVHV The fuses are located at the left side of the module Replace the fuses as follows 1 Switch the CPU to STOP 2 Switch off the load voltage of the digital output module 3 Remove the front connector from the digital output module 4 Loosen the fixing screw of the digital output module 5 Swing out the digital output module 6 Remove th...

Page 157: ...r notes are found in the relevant hardware software manuals 2YHUYLHZ 7HVWLQJ XQFWLRQV 6RIWZDUH WHVWLQJ IXQFWLRQV 0RQLWRULQJ DQG PRGLI LQJ RI YDULDEOHV VLQJOH VWHS PRGH STEP 7 offers you the following testing functions you can also use for diagnostics Monitoring and modifying of variables Can be used for PG PC monitoring of specific CPU or user program variables You can also declare permanent value...

Page 158: ...ich cannot be overwritten subsequently by the user program For example you can use it to jumper sensors or switch outputs permanently irrespective of the user program DQJHU This could result in severe injury or even death and damage to property Incorrect use of the Force function could result in death or severe injury and damage to machinery or even the entire plant Always follow the safety instru...

Page 159: ...te force job for outputs Execute force job for outputs Figure 11 1 Principle of forcing in S7 300 CPUs 7KH GLIIHUHQFHV EHWZHHQ IRUFLQJ DQG PRGLI LQJ YDULDEOHV Table 11 1 The differences between forcing and modifying variables KDUDFWHULVWLFV IXQFWLRQ RUFLQJ 0RGLI LQJ 9DULDEOHV Memory bit M Yes Timers and counters T C Yes Data Blocks DB Yes Inputs and outputs I Q Yes Yes Peripheral Inputs PI Periphe...

Page 160: ...hen accessing a peripheral module Asynchronous errors Errors you can QRW relate to a specific point in the user program e g cycle time exceeded module error UURU DQGOLQJ Programming with foresight and above all knowledge and proper handling of diagnostic tools puts you into an advantageous position in error situations You can reduce the effects of errors It makes it easier for you to locate errors...

Page 161: ...gnostics with system functions are listed below Using SFC 51 RDSYSST to read an SSL partial list or an extract thereof Reading the diagnostic data Slave diagnostics of a DP slave using SFC 13 DPNRM_DG Every DP slave provides slave diagnostic data according to EN 50 170 Volume 2 PROFIBUS You can use SFC 13 DPNRM_DG to read these diagnostic data Error information is stored in hex code Refer to the r...

Page 162: ...lick on the faulty module opens detailed error information The scope of this information depends on the specific module You can view the following information Display of general information on the module e g order No version designation and module status e g error Display of module errors e g channel error in the central I O and DP slave Display of messages from the diagnostic buffer For CPUs you ...

Page 163: ...ff LED off LED off CPU power supply missing Remedy Check whether the power supply module is connected to mains and switched on Check whether the CPU is connected to the power supply module and switched on LED off On X see the descri ption LED off On The CPU is in STOP mode Remedy Start the CPU On On X LED off On The CPU is in STOP mode as a result of error Remedy refer to the tables below evaluate...

Page 164: ...configuration error Calls OB85 CPU does not STOP if OB85 is loaded Load OB40 OB number is apparent from the diagnostic buffer Status alarm is generated but the appropriate OB55 is not loaded Calls OB85 CPU does not STOP if OB85 is loaded Load OB55 Update alarm is generated but the appropriate OB 56 is not loaded Calls OB85 CPU does not STOP if OB85 is loaded Load OB56 Vendor specific alarm is gene...

Page 165: ...OH UURUV UHVSRQVH RI WKH 38 5HPHGLHV A module was removed or inserted during operation CPU goes into STOP Screw tighten the modules and restart the CPU A diagnosable module reports a diagnostic interrupt Calls OB82 CPU does not STOP if OB82 is loaded response to the diagnostic event depending on the module s configuration Attempt to access a missing or faulty module Loose connector Software or har...

Page 166: ... be found in the 67 3 2QOLQH HOS and in the Manual 6 VWHP 6RIWZDUH IRU 6 6 VWHP DQG 6WDQGDUG XQFWLRQV 6WDWXV DQG HUURU GLVSOD RI 3 FRPSOLDQW 38V Table 11 5 The BUSF BUSF1 and BUSF2 LEDs HVFULSWLRQ 6 9 86 86 86 On On On flashe s PROFIBUS DP interface error Remedy Refer to the table below On On On flashes X Error at the first PROFIBUS DP interface of CPU 317 2 DP Remedy Refer to the table below On O...

Page 167: ...VVLEOH UURUV UHVSRQVH RI WKH 38 5HPHGLHV The CPU is the DP master active slave Failure of a connected station At least one of the configured slaves cannot be accessed Incorrect configuration Calls OB86 when CPU is in RUN mode CPU switches to STOP if OB86 is not loaded Ensure that the bus cable is connected to the CPU and that the bus is not interrupted Wait until the CPU has started If the LED doe...

Page 168: ... OB82_MDL_ADDR For the diagnostics of the entire DP slave Call SFC13 Enter the diagnostic address OB82_MDL_ADDR into the LADDR parameter Note SFC 13 is asynchronous i e it can be called several times until it enters the BUSY mode 0 First call into OB82 finish processing in the cycle For the diagnostics of the affected components Call SFB54 MODE 1 set Diagnostic data is entered into the TINFO and A...

Page 169: ...ic address for Slot 0 and one diagnostic address for Slot 2 The two addresses have the following functions The diagnostic address for slot 0 reports in the master all events relating to the complete slave station representative e g station failure The diagnostic address for slot 2 is used to report events that affect this slot For example if the CPU is acting as an intelligent slave it returns the...

Page 170: ... 1 DP slave STOP RUN Call of OB82 with the message 0RGXOH 2 outgoing event diagnostic address of Slot 2 of the DP slave that is assigned to the DP master Variable OB82_MDL_STOP 0 YDOXDWLRQ LQ WKH XVHU SURJUDP The table below shows how you can for example evaluate RUN to STOP transitions of the DP slave in the DP master Table 11 9 Evaluation in the DP master of RUN to STOP transitions by the DP sla...

Page 171: ...with 67 3 LDJQRVWLF DGGUHVVHV ZLWK GLUHFW GDWD H FKDQJH You assign a diagnostic address to the receiving station when directly exchanging data CPU 31x 2 as sender CPU 31x 2 as receiver PROFIBUS Diagnostic address Figure 11 4 Diagnostic address for the receiving station with direct data exchange The figure illustrates how you specify a diagnostic address assigned to the receiver in the receiver dur...

Page 172: ...ata area of the user program 6 VWHP DQG 6WDQGDUG XQFWLRQV Reference Manual SFC 51 RDSYSST Reading SSL sublists In the diagnostic interrupt call SFC 51 with the system status list ID W 16 00B4 and read out the SSL of the slave CPU 6 VWHP DQG 6WDQGDUG XQFWLRQV Reference Manual SFB 54 RALRM Reading additional interrupt information from a DP slave or a centralized module from the relevant OB 6 VWHP DQ...

Page 173: ...be stored in DB 20 Here you can also use any other data block Slave diagnostic data has a length of 26 bytes 67 3 XVHU SURJUDP 67 HVFULSWLRQ A DB 30 SPA FB 192 Name IM308C DPAD KH F800 IMST KY 0 3 FCT KC SD GCGR KM 0 TYP KY 0 20 STAD KF 1 LENG KF 26 ERR DW 0 Default address area of IM 308 C IM no 0 PROFIBUS address of the DP slave 3 Function Read slave diagnosis not evaluated S5 data area DB 20 Di...

Page 174: ...a record 1 is to be stored in DB 10 67 3 XVHU SURJUDP 67 HVFULSWLRQ CALL SFC 59 REQ TRUE IOID B 16 54 LADDR W 16 200 RECNUM B 16 1 RET_VAL MW2 BUSY MO 0 RECORD P DB10 DBX 0 0 BYTE 240 Request to read Identifier of the address area here the I O input Logical address of the module Data record 1 is to be read An error code is output if an error occurs Read operation not finished DB 10 is target area ...

Page 175: ...ic address for Slot 0 and one diagnostic address for Slot 2 The two addresses have the following functions The diagnostic address for slot 0 reports in the master all events relating to the complete slave station representative e g station failure The diagnostic address for slot 2 is used to report events that affect this slot For example if the CPU is acting as an intelligent slave it returns the...

Page 176: ...he DP slave Variable OB82_MDL_STOP 1 DP master STOP RUN Call of OB82 with the message 0RGXOH 2 outgoing event diagnostic address of the DP slave assigned to the DP slave Variable OB82_MDL_STOP 0 YDOXDWLRQ LQ WKH XVHU SURJUDP The table below shows you how you can for example evaluate RUN STOP transitions of the DP master in the DP slave see also the previous table Table 11 12 Evaluation of RUN to S...

Page 177: ...ram on an intelligent slave This starts the associated OB on the DP master Interrupt specific additional information may be sent at the same time You can read all this additional information in the DP master using SFB 54 RALRM QWHUUXSWV ZLWK DQRWKHU 3 PDVWHU When CPU 31x 2 operates with another DP master an image of these interrupts is created in the device specific diagnostic data of CPU 31x 2 Yo...

Page 178: ... Byte 2 Byte 3 Master PROFIBUS address Byte 4 Byte 5 Low byte High byte Manufacturer ID Byte 6 to Module diagnostics Byte x 1 length depends on the number of the configured areas of the intermediate memory 1 1 Modul status device specific diagnostics Byte x to Byte y 1 length depends on the number of the configured address areas Interrupt status device specific diagnostics Byte y to Byte z length ...

Page 179: ...Function not supported e g changing the DP address at software level Check configuration data 5 This bit is always 0 6 DP slave type inconsistent with software configuration Was the software set for the right station type parameter assignment error 7 DP slave was configured by a DP master other than the master currently accessing the slave The bit is always 1 if for example you are currently acces...

Page 180: ...WHU 352 86 DGGUHVV The Master PROFIBUS address diagnostic byte stores the DP address of the DP master that has configured the DP slave and has read and write access to the DP slave Table 11 16 Structure of the master PROFIBUS address byte 3 LW HVFULSWLRQ 0 to 7 DP address of the DP master that has configured the DP slave and has read write access to that DP slave FFH DP slave was not configured by...

Page 181: ...gured address area Entry for 5th configured address area Byte 8 Entry for 6th to 13th configured address area 0 1 Entry for 30th configured address area Entry for 31st configured address area Preset actual configuration Code for module diagnostics Entry for 1st configured address area Entry for 14th to 21st configured address area Byte 9 Byte 10 Entry for 22nd to 29th configured address area Byte ...

Page 182: ...ured address area 3rd configured address area 4th configured address area 5th configured address area 2 3 4 5 6 Module ok valid data Module fault invalid data defective mode Wrong module invalid data No module invalid data 7 0 1 2 3 4 5 6 0 0 Length of module status incl byte x max 13 bytes Code for device related diagnostics 7 0 1 2 3 4 5 6 0 0 1 1 0 0 0 0 2 module status H Code for status messag...

Page 183: ... 4 to Byte y 7 Byte y Length of the device related diagnostics incl byte y max 20 bytes Code for device related diagnostics Byte y 3 Slot No 2 CPU 4 35 No of the configured address area 00 No additional information on diagnostic status 01 Incoming diagnostics 10 Outgoing diagnostics 11 Outgoing diagnostics but there are still disturbances there is at least 1 error Byte z 7 6 5 4 3 2 1 0 Bit No 0 0...

Page 184: ...HU E WH Byte y 1 contains the code for a diagnostic interrupt 01H The diagnostic data contains the 16 bytes of status information from the CPU The figure below shows the allocation of the first four bytes of diagnostic data The next 12 bytes are always 0 The data in these bytes corresponds to the contents of data record 0 of diagnostic data in 67 3 in this case not all bits are used 0 Operating mo...

Page 185: ...e y 6 Byte y 5 Byte y 4 7 6 5 4 3 2 1 0 Bit no 0 Note the SFB 75 usage description Note that this diagnostic data has a fixed meaning in the S7 context You will find more information in the STEP 7 Online Help or in the Reference Manual System Software for S7 300 400 System and Standard Functions in the Diagnostic Data chapter 7 6 5 4 3 2 1 0 Bit no 7 6 5 4 3 2 1 0 Bit no 7 6 5 4 3 2 1 0 Bit no Byt...

Page 186: ...7HVWLQJ XQFWLRQV LDJQRVWLFV DQG DXOW OLPLQDWLRQ S7 300 Automation System Hardware and Installation CPU 31xC and CPU 31x 11 30 A5E00105492 03 ...

Page 187: ...2 GHYLFHV EMERGENCY OFF devices to IEC 204 corresponds to VDE 113 must remain effective in all operating modes of the plant or system 6WDUW XS RI WKH V VWHP DIWHU VSHFLILF HYHQWV The following table shows you what you have to observe when starting up a plant again following specific events Table 12 1 Starting the system after specific events I WKHUH LV KDW PXVW QRW KDSSHQ Restart following a volta...

Page 188: ...ly Table 12 3 Protection against external electrical interference Q WKH FDVH RI 0HDVXUHV WR WDNH Buildings External lightning protection 24 VDC power supply cables signal cables Internal lightning protection Install lightning protection e g lightning conductors 24 VDC Power Supply Safe electrical extra low voltage isolation 3URWHFWLRQ DJDLQVW H WHUQDO HOHFWULFDO LQWHUIHUHQFH The table below shows ...

Page 189: ...vironment and high electromagnetic compatibility you should draw up an EMC installation plan before you install the controller under consideration of all possible interference sources 3RVVLEOH HIIHFWV RI LQWHUIHUHQFH Electromagnetic noise can influence a PLC in various ways Electromagnetic fields having a direct influence on the system Interference via bus signals PROFIBUS DP etc Interference coup...

Page 190: ... or electrical coupling occurs between conductors connected to different potentials The coupling effect is proportional to voltage change over time Interference coupling due to parallel routing of signal cables Static discharge of the operator Contactors Inductive coupling Inductive or magnetic coupling occurs between two current circuit loops Current flow in magnetic fields induces interference v...

Page 191: ... washers or remove the protective insulating finish on the points of contact Wherever possible avoid the use of aluminum parts for ground bonding Aluminum oxidizes very easily and is therefore less suitable for ground bonding Create a central connection between chassis ground and the equipotential grounded protective conductor system 5XOH 3URSHU FDEOH URXWLQJ Ensure proper cable routing when you w...

Page 192: ...mpedance Always install shielded data cables in metal metallized connector housings 5XOH 6SHFLDO 0 PHDVXUHV Some special applications might require special EMC measures refer to the section on RZ WR SURWHFW GLJLWDO RXWSXW PRGXOHV DJDLQVW LQGXFWLYH VXUJH YROWDJH Connect anti surge elements to all inductive devices not controlled by S7 300 modules For cabinet or cubicle lighting in the immediate ran...

Page 193: ... active elements by a basic insulating and only subject to electrical potential if an error occurs QVWDOODWLRQ DQG JURXQG ERQGLQJ RI LQDFWLYH PHWDO SDUWV Bond all inactive metal parts to a large surface ground when you install the S7 300 Proper ground bonding ensures a homogeneous reference potential for the controller and reduces the effect of interference coupling The ground connection establish...

Page 194: ...lements e g large and highly conductive contact surface The protective insulating finish on varnished or anodized metal elements must be pierced or removed Use special contact washers or completely remove the finish on the point of contact Protect your connecting elements against corrosion e g with a suitable grease Interconnect moving chassis ground elements e g cabinet doors with flexible ground...

Page 195: ...stallation 6DPSOH 0 FRPSDWLEOH FDELQHW LQVWDOODWLRQ The figure below shows a cabinet installation with the measures described above bonding of inactive metal parts to chassis ground and connecting the cable shielding to ground This sample applies only to grounded operation Note the points in the figure when you install your system 1 2 3 4 5 6 7 8 Figure 12 2 Example of an EMC compatible cabinet in...

Page 196: ...sbar Interconnect the shielding busbar on a large surface with the supporting bars metal to metal connection The cable shielding is terminated on the busbar 7 Protective conductor busbar Interconnect the protective conductor busbar on a large surface with the supporting bars metal to metal connection Interconnect the protective conductor busbar and the protective ground system using a separate cab...

Page 197: ...dized metal parts use special contact washers or remove the insulating layers Provide a large surface and low impedance metal to metal connection for fastening the shielding protective protective ground bar Always touch protect live mains conductors The figure below shows an example of EMC compatible wall mounting of an S7 CPU PS Figure 12 3 Example of EMC compatible wall mounting ...

Page 198: ...Whenever possible use cables equipped with a shielding braid Shielding density should be at least 80 Avoid cables with film shielding because the film can be easily damaged by tensile or pressure stress thus reducing its shielding effect DQGOLQJ RI WKH VKLHOGLQJ Note the following points on handling the shielding Always use metal clamps to mount shielding braid The clamps must contact a large area...

Page 199: ... system elements This can result in high equipotential currents e g if the cable shielding is terminated at both ends and grounded to different system components The cause of potential difference can be differences in the power supplies DUQLQJ Cable shielding is not suitable for equipotential bonding Always use the prescribed cables e g with a cross section of 16 mm 2 When installing MPI DP networ...

Page 200: ...protective conductors the impedance of the additional equipotential bonding conductor must not exceed 10 of the shielding impedance Determine the cross section of your equipotential bonding conductor on the basis of the maximum equalizing current that will flow through it The equipotential bonding conductor cross section that has proven best in practice is 16 mm 2 Always use equipotential bonding ...

Page 201: ...e 12 7 Routing cables inside buildings DEOHV IRU DQG FDEOHV IRU 5XQ Bus signals shielded PROFIBUS Data signals shielded programming devices operator panels printers counter inputs etc Analog signals shielded DC voltage 60 V unshielded Process signals 25 V shielded AC voltage 25 V unshielded Monitors coaxial cable In common bundles or cable ducts DC voltage 60 V and 400 V unshielded AC voltage 25 V...

Page 202: ...C and AC voltage 400 V unshielded LQVLGH FDELQHWV In separate bundles or cable ducts no minimum clearance necessary RXWVLGH FDELQHWV On separate cable racks with a clearance of at least 10 cm Bus signals shielded PROFIBUS Data signals shielded programming devices operator panels printers counter inputs etc Analog signals shielded DC voltage 60 V unshielded Process signals 25 V shielded AC voltage ...

Page 203: ...quipotential bonding between connected devices Take the necessary internal and external lightning protection and grounding measures in as far as they are applicable to your particular application 5XOHV IRU OLJKWQLQJ SURWHFWLRQ RXWVLGH EXLOGLQJV Run your cables either in metal conduits grounded at both ends or in concrete cable ducts with continuous end to end armoring 2YHUYROWDJH SURWHFWLRQ HTXLSP...

Page 204: ...only if the whole surrounding building is designed to provide protection against overvoltage This applies especially to constructional measures for the building at the planning stage If you wish to obtain detailed information on surge protection we therefore recommend you contact your Siemens partner or a company specialized in lightning protection LJKWQLQJ 3URWHFWLRQ RQH RQFHSW 3ULQFLSDOO RI WKH ...

Page 205: ...itionally cause overvoltage as a result of switching operations coupling etc ORFN GLDJUDP RI WKH OLJKWQLQJ SURWHFWLRQ RQHV The figure below shows a block diagram of the lightning protection zone concept for a detached building Lightning protection zone 0 field side Lightning prot zone 2 Lightning protection zone 1 Line in information system Line in power system Internal line Metal part Lightning p...

Page 206: ...ng lightning current are Metal pipes e g water gas and heat Power cables for example mains voltage 24 V supply Data cables for example bus cable 5XOHV IRU WKH 7UDQVLWLRQ 3RLQW EHWZHHQ LJKWQLQJ 3URWHFWLRQ RQHV 5XOHV IRU WUDQVLWLRQ SRLQW LJKWQLQJ SURWHFWLRQ HTXLSRWHQWLDO ERQGLQJ The following measures are suitable for lightning protection equipotential bonding at the transition between lightning pro...

Page 207: ... x DEHNgap B n N PE lightning conductor N to PE 900 130 AC TN S system 2 x DEHNbloc 1 lightning conductor phase L1 N to PE 900 111 5SD7 032 AC TN C system 1 x DEHNbloc 1 lightning conductor phase L to PEN 900 111 5SD7 032 1 x DEHNbloc 1 lightning conductor phase to N 900 111 5SD7 032 1 AC TT system 1 x DEHNgap B n N PE lightning conductor N to PE 900 130 2 24 VDC Power Supply 1 x Blitzductor VT Li...

Page 208: ...tion 1 2 GGLWLRQDO 0HDVXUHV We recommend fine wire fusing for following elements All 1 2 and greater lightning protection zone transitions All cables that run within a lightning protection zone and are longer than 100 m LJKWQLQJ SURWHFWLRQ HOHPHQW IRU WKH 9 SRZHU VXSSO PRGXOH Always use the Blitzductor VT type AD 24 V SIMATIC for the 24 VDC power supply module of the S7 300 All other surge protect...

Page 209: ...ard 275 surge arresters 900 600 5SD7 030 AC TN C system 1 x DEHNguard 275 surge arresters 900 600 5SD7 030 1 x DEHNguard 275 surge arrester phase L to N 900 600 5SD7 030 1 AC TT system 1 x DEHNgap C N PE surge arrester N to PE 900 131 2 24 VDC Power Supply 1 x Blitzductor VT type AD 24 V 918 402 Bus cable MPI RS485 Blitzductor CT surge arrester type MD HF 919 506 and 919 570 3 RS232 V 24 1 x per c...

Page 210: ...resters 900 600 5SD7 030 AC TN C system 1 x DEHNguard 275 surge arresters 900 600 5SD7 030 1 x DEHNguard 275 surge arrester phase L to N 900 600 5SD7 030 1 AC TT system 1 x DEHNgap C N PE surge arrester N to PE 900 131 2 24 VDC Power Supply 1 x Blitzductor VT type AD 24 V 918 402 Bus cable MPI RS485 Blitzductor CT surge arrester type MD HF 919 506 and 919 570 3 RS232 V 24 1 x per conductor pair lo...

Page 211: ... below shows you how install an effective surge protection for 2 networked S7 300 PLCs CPU SV 10 mm2 PE Switchgear cubicle 1 L1 L2 L3 N PE Lightning protection zone 0 field side Lightning protection zone 1 Lightning protection zone 2 SM MPI CPU SV 10 mm 2 PE Switchgear cubicle 2 SM MPI Lightning protection zone 2 1 4 5 3 6 2 4 2 5 4 4 6 3 7 3 Figure 12 7 Sample circuit for networked S7 300 PLCs ...

Page 212: ...rester Blitzductor CT type MD HF Order No 919 506 and 919 570 Low voltage surge protection for RS485 interfaces at transition 1 2 4 Digital input modules FDK 2 D 60 V Order No 919 993 Digital output modules FDK 2 D 5 24 V Order No 919 991 Analog modules MD 12 V Blitzductor CT Order No 919 506 and 919 541 Low voltage surge protection signal modules I O at transition 1 2 5 Bus cable shielding mounti...

Page 213: ...tive devices require additional surge arresters only in following cases If SIMATIC output circuits can be switched off by additionally installed contacts e g relay contacts If the inductive loads are not controlled by SIMATIC modules Note Request information on relevant surge protection rating from the supplier of inductive devices DPSOH The figures illustrates an output circuit requiring addition...

Page 214: ...er switch off voltage capacity High switch off delay 6 to 9 times higher than without protective circuit The Zener diode switches off faster than a diode circuit LUFXLW IRU FRLOV RSHUDWHG ZLWK YROWDJH The figure shows coils operated with AC voltage and varistor or RC circuit with varistor with RC element Figure 12 10 Circuit for coils operated with AC voltage The characteristics of varistor circui...

Page 215: ...ematic and computer aided testing of all components Burn in of all large scale integrated circuits e g processors memory etc Measures preventing static charge when handling MOS ICs Visual checks at different stages of manufacture Continuous heat run test at elevated ambient temperature over a period of several days Careful computer controlled final testing Statistical evaluation of all returned sy...

Page 216: ...controls To avoid the need to examine the entire controller from the aspect of safety WKH FRQWUROOHU LV XVXDOO GLYLGHG LQWR DQ DUHD WKDW LV VDIHW UHOHYDQW DQG DQ DUHD WKDW LV QRW VDIHW UHOHYDQW In the non safety related area no special demands are placed on the safety of the control equipment because any failure in the electronics will have no effect on the safety of the installation In the safety...

Page 217: ...into analog manipulated variables DFNSODQH XV The backplane bus is a serial data bus It supplies power to the modules and is also used by the modules to communicate with each other Bus connectors interconnect the modules EDFN XS 0HPRU The back up memory provides a back up of memory areas for the Æ CPU without a back up battery It backs up a configurable number of timers counters memory bits data b...

Page 218: ... Communication processors are modules for point to point and bus communication RPSUHVV The programming device online function Compress is used to align all valid blocks contiguously in the RAM of the CPU at the start of the user memory This eliminates all gaps which arose when blocks were deleted or modified RQILJXUDWLRQ Assignment of modules to racks slots and e g for signal modules addresses RQV...

Page 219: ...s DB are data areas in the user program which contain user data Global data blocks can be accessed by all code blocks while instance data blocks are assigned to a specific FB call DWD VWDWLF Static data is data which can only be used within a function block The data is saved in an instance data block belonging to the function block The data stored in the instance data block is retained until the n...

Page 220: ...DP protocol The DPV1 functionality has been incorporated into IEC 61158 EN 50170 volume 2 PROFIBUS OHFWULFDOO LVRODWHG The reference potential of the control and on load power circuits for isolated I Os is galvanically separated e g by optocouplers relay contact or transformer Input output circuits can be connected to a common potential TXLSRWHQWLDO ERQGLQJ Electrical connection equipotential bond...

Page 221: ... are the same as electrically erasable EEPROMS in that they can retain data in the event of a power failure but they can be erased much more quickly FEPROM Flash Erasable Programmable Read Only Memory They are used on Æ Memory Cards ORDWLQJ SRWHQWLDO No galvanic connection to ground 25 The Force function is used to assign fixed values to certain variables from a user program or CPU including I Os ...

Page 222: ...lows One CPU broadcasts a GD packet to the other CPUs One CPU sends and receives a GD packet from another CPU A GD circuit is identified by a GD circuit number OHPHQW A GD element is generated by assigning shared Æ global data It is identified by a unique global data ID in the global data table SDFNHW A GD packet can consist of one or more GD objects which are transmitted together in a frame OREDO...

Page 223: ...WHUIDFH PXOWLSRLQW Æ MPI QWHUUXSW The CPU s Æ operating system knows 10 different priority classes for controlling user program execution These priority classes include interrupts such as process interrupts When an interrupt is triggered the operating system automatically calls an assigned OB In this OB the user can program the desired response for example in an FB QWHUUXSW HOD The delay interrupt...

Page 224: ...HQGRU VSHFLILF A vendor specific interrupt can be generated by a DPV1 slave It causes OB57 to be called on the DPV1 master Detailed information on OB 57 can be found in the 5HIHUHQFH 0DQXDO 6 VWHP 6RIWZDUH IRU 6 6 VWHP DQG 6WDQGDUG XQFWLRQV QWHUUXSW ZDWFKGRJ A watchdog interrupt is generated periodically by the CPU in a configurable time pattern A corresponding Æ organization block is then execute...

Page 225: ... the only difference compared to the Æ Memory Card 0RGXOH 3DUDPHWHUV Module parameters are values which can be used to control the response of the module A distinction is made between static and dynamic module parameters 03 This interface is capable of multipoint communication MPI It forms part of the SIMATIC S7 PG interface It enables multiple node operation PGs text based displays OPs on one or ...

Page 226: ...gram The processing sequence of the user program is defined in the organization blocks 3DUDPHWHUV 1 Variable of a 67 3 code block 2 Variable for declaring module response one or several per module All modules have a suitable basic factory setting which can be customized in 67 3 There are Æ static parameters and Æ dynamic parameters 3DUDPHWHUV G QDPLF Unlike static parameters dynamic parameters of ...

Page 227: ...t of a specific event in the process The process interrupt is reported to the CPU The assigned Æ organization block is then processed according to interrupt priority 3URGXFW YHUVLRQ The product version identifies differences between products which have the same order number The product version is incremented when forward compatible functions are enhanced after production related modifications use ...

Page 228: ...LDO Potential with reference to which the voltages of participating circuits are observed and or measured 5HWHQWLYLW A memory area is retentive if its contents are retained even after a power failure and a change from STOP to RUN The non retentive area of memory markers timers and counters is reset following a power failure and a transition from the STOP mode to the RUN mode The following can be m...

Page 229: ...le analog 6ODYH A slave may only exchange data with the Æ Master on request 67 57 83 A STARTUP routine is executed at the transition from STOP to RUN mode Can be triggered by the Æ mode selector switch or after power on or by an operator action on the programming device An S7 300 performs Æ a restart 67 3 Programming language for developing user programs for SIMATIC S7 PLCs 6XEVWLWXWH YDOXH Substi...

Page 230: ...tral processing unit System memory contains the address areas e g timers counters memory bits and the data areas required internally by the operating system e g buffers for communication 6 VWHP VWDWH OLVW The system status list contains data describing the current status of an S7 300 You can always use this list to obtain an overview of The S7 300 configuration The current CPU configuration and th...

Page 231: ... programs The latter are created with Æ 67 3 programming software using optional programming languages LAD and STL User programs are stored in code blocks data is stored in data blocks 8VHU PHPRU User memory contains Æ code and Æ data blocks of the user program The user memory can be integrated in the CPU or can be provided on plug in memory cards or memory modules However user programs are always...

Page 232: ... ORVVDU S7 300 Automation System Hardware and Installation CPU 31xC and CPU 31x 13 16 A5E00105492 03 ...

Page 233: ...USF LED 11 10 BUSF1 LED 11 10 BUSF2 LED 11 10 cabinet Selecting and dimensioning 5 11 Cabinet dimensions 5 12 power loss dissipated 5 14 types 5 13 Cable lengths longer 5 42 maximum 5 40 MPI subnet 5 41 PROFIBUS subnet 5 41 stub cables 5 42 Cable routing inside buildings 12 15 Cable shielding 12 12 ground 5 24 Cables preparing 7 10 Central unit 5 2 Chassis ground 13 2 Clearances 5 6 Code Block 13 ...

Page 234: ...Ds 11 7 with system functions 11 5 Digital modules Addresses 8 3 digital output module replacement fuses 10 9 replacing fuses 10 10 Dimensions of modules 5 4 Direct data exchange 9 32 DP master 13 4 interrupts 11 21 DP slave 13 4 DPV1 13 4 Electrically isolated 13 4 EMC definition 12 3 EMC correct grounding 12 7 EMC error free installation 12 7 EMC grounded installation example 12 9 Equipotential ...

Page 235: ...ps assignment to modules 7 13 inserting 7 13 LED 11 10 Lightning protection equipotential bonding 12 20 Lightning protection zone concept 12 18 Load from PS 307 5 29 Load circuits ground 5 24 Load current determining 5 28 load memory 13 8 Load voltage connecting the reference potential of the load voltage 5 25 Local data 13 8 Local equipotential bonding 12 22 0 Main memory 13 8 Mains voltage selec...

Page 236: ...9 PG access across network boundaries 5 47 connecting 9 6 ungrounded installation 9 9 via stub cable to subnet 9 8 Point to Point maximum baud rate 5 32 maximum possible number of nodes 5 32 Point to point communication 5 31 Potential differences 5 24 12 13 Power on requirements 9 12 Power supply grounded 5 16 Power supply module selecting mains voltage 7 5 power up initial 9 12 priority OB 13 10 ...

Page 237: ...ing contact element 5 5 7 14 mounting 7 14 Shielding terminal laying cables 7 15 Signal module 13 13 SIMATIC Manager 9 17 start 9 17 SINEC L2 DP 13 11 single step mode 11 1 Slave diagnostics reading 11 15 reading example 11 17 structure 11 22 slot number assign 6 9 insert 6 10 Slot number label 6 2 Slot based addressing 8 1 Start up 13 13 CPU 31x 2 DP as a DP master 9 24 CPU 31x 2 DP as a DP slave...

Page 238: ...or control create variable table 9 18 variables modifying 11 1 monitoring 11 1 Variables forcing 11 2 Vendor ID 11 24 Vendor specific interrupt 13 8 Voltage selecting mains voltage 7 5 Wiring accessories required 7 1 front connector 7 11 front connectors 7 3 PS and CPU 7 2 7 6 required tools and materials 7 2 rules 7 2 ...

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