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Wiring the S7-400

4-8

Automation System S7-400 Hardware and Installation

A5E00850741-01

4.6

Assembling an S7-400 with Ungrounded Reference
Potential (Ungrounded Configuration)

Application

In large installations, it may be necessary to configure the S7-400 with an
ungrounded reference potential, for example, for ground fault monitoring. This is
the case in the chemical industry or in power plants, for example.

Discharge of Interference Currents

With the S7-400 in an ungrounded configuration, any interference currents are
discharged to the chassis ground via an RC network integrated in the rack.

Terminal Connection Model

Shown in Figure 4-3 is an S7-400 configured with ungrounded reference potential.
In this case you must remove the jumper between reference potential M and the
frame element terminal on the rack. The reference potential M of the S7-400 is
then connected via the RC network to the chassis ground terminal. When you
connect this terminal to the chassis ground, RF interference currents will be
discharged and static charges will be avoided.

Frame element terminal

Chassis ground terminal

RC network

M

6.8 nF

10 M

Ω

Detached

jumper

Reference potential M

Figure 4-3

An S7-400 Configured with Ungrounded Reference Potential

Power Supply Units

When using power supply units, ensure that the secondary winding is not
connected to the protective ground conductor.

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Содержание Simatic S7-400

Страница 1: ...Maintenance 7 Appendices Assembling and Installing Systems A Guidelines for Handling Electro statically Sensitive Devices ESD B Glossary Index 11 2006 A5E00850741 01 Automation System S7 400 Hardware and Installation Installation Manual SIMATIC This manual is part of the documentation package with the order number 6ES7498 8AA05 8BA0 ...

Страница 2: ...d its components may only be used for the applications described 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 Correct reliable operation of the product requires proper transport storage positioning and assembly as well as careful operation and maintenance Trademarks All name...

Страница 3: ...2000 or XP operating system The S7 400 system is configured in STEP 7 standard software You should therefore have sufficient knowledge of this standard software This knowledge is provided in the Programming with STEP 7 manual Please note the information on the safety of electronic control systems in the appendix of this manual in particular when operating an S7 400 in safety relevant areas Scope o...

Страница 4: ...ontaminants and can therefore be recycled To recycle and dispose of your old device in an environment friendly manner please contact a disposal company certified for disposal of electronic waste Further Support If you have any technical questions please get in touch with your Siemens representative or responsible agent You will find your contact person at http www siemens com automation partner Yo...

Страница 5: ...iemens com automation service Service Support on the Internet In addition to our documentation we offer our Know how online on the internet at http www siemens com automation service support where you will find the following The newsletter which constantly provides you with up to date information on your products The right documents via our Search function in Service Support A forum where users an...

Страница 6: ...Preface vi Automation System S7 400 Hardware and Installation A5E00850741 01 ...

Страница 7: ... for the Arrangement of Modules 2 29 2 13 Installing Modules in a Rack 2 30 2 14 Marking the Modules with Slot Labels 2 33 2 15 Methods of Expansion and Networking 2 34 2 16 Accessories 2 35 3 Addressing the S7 400 3 1 3 1 Geographical and Logical Addresses 3 2 3 2 How to Determine the Default Address of a Module 3 4 3 3 How to Determine the Default Address of a Channel 3 6 4 Wiring the S7 400 4 1...

Страница 8: ... 5 1 5 1 Configuring a Network 5 2 5 2 Fundamentals 5 3 5 3 Rules for Configuring a Network 5 7 5 4 Cable Lengths 5 15 5 5 PROFIBUS DP Bus Cables 5 18 5 6 Bus Connectors 5 19 5 7 RS 485 Repeater Diagnostics Repeater 5 21 5 8 PROFIBUS DP Network with Fiber Optic Cables 5 22 5 8 1 Fiber Optic Cables 5 24 5 8 2 Simplex Connectors and Connector Adapter 5 26 5 8 3 Connecting a Fiber Optic Cable to the ...

Страница 9: ...ion for EMC A 5 A 3 Installation of Programmable Controllers for EMC A 9 A 4 Examples of EMC Compatible Assembly A 10 A 5 Shielding Cables A 13 A 6 Equipotential Bonding A 15 A 7 Cabling Inside Buildings A 17 A 8 Cabling Outside Buildings A 19 A 9 Lightning Protection and Overvoltage Protection A 20 A 9 1 Lightning Protection Zone Concept A 21 A 9 2 Rules for the Transition between Lightning Prote...

Страница 10: ...nt Connector with Spring Type Terminals 4 26 4 16 Principle of the spring contact 4 27 4 17 Fitting a Strain Relief Viewed from Below 4 28 4 18 Fitting the Labels on the Front Connector 4 29 4 19 Fitting a Label in the Front Connector 4 30 4 20 Attaching the Front Connector 4 33 4 21 Screwing On the Front Connector 4 34 4 22 Plugging a Connecting Cable into a Send IM 4 35 4 23 Connection Between a...

Страница 11: ...ing Equipotential Bonding Conductor and Signal Line A 16 A 6 Lightning Protection Zones of a Building A 22 A 7 Sample Circuitry for Networked S7 400 PLCs A 28 A 8 Relay Contact for EMERGENCY OFF in the Output Circuit A 30 A 9 Suppression for DC Operated Coils A 31 A 10 Suppression with AC Operated Coils A 31 A 11 Shielding and Grounding with a Great Distance between Monitor and Programmable Contro...

Страница 12: ... Lines per Segment 5 16 5 4 Features of the Fiber Optic Cables 5 24 5 5 Order Numbers Fiber Optic Cables 5 26 5 6 Order Numbers Simplex connectors and connector adapters 5 27 5 7 Permissible Cable Lengths on the Optical PROFIBUS DP Network Partyline Topology 5 28 6 1 Checklist to be Used Before Switching On for the First Time 6 3 6 2 Setting the Battery Monitoring Switch 6 5 A 1 Key for Example 1 ...

Страница 13: ... with which you can assemble an S7 400 Features of the S7 400 The S7 400 programmable controller combines all the advantages of the previous system with those of a new system and new software These are A graded CPU platform Upwardly compatible CPUs Enclosed modules of rugged design Convenient terminal system for the signal modules Compact modules with a high component density Optimum communication...

Страница 14: ...Units CPUs execute the user program communicate via the multipoint interface MPI with other CPUs or with a programming device PG Memory cards store the user program and parameters IF 964 DP interface module used to connect distributed I Os via PROFIBUS DP Signal Modules SM Signal Module digital input modules digital output modules analog input modules analog output modules Accessories Front connec...

Страница 15: ... of application ventilates modules in special cases can be operated with or without a filter Additional components of the S7 400 such as communications processors function modules etc are described in separate manuals Location of the order number and product version The order number and product version are printed on every module of the SIMATIC S7 400 The firmware version is also printed on the CP...

Страница 16: ...Product Overview 1 4 Automation System S7 400 Hardware and Installation A5E00850741 01 Example of a rating plate Order no Module designation Approvals and marks Product version ...

Страница 17: ...6 Chassis Terminal Connection in the Non Isolated Configuration 2 16 2 7 Methods of Ventilation 2 18 2 8 Changing the Ventilation with the Cable Duct and Fan Subassembly 2 20 2 9 Installing the Fan Subassembly 2 22 2 10 Installing the Cable Duct 2 24 2 11 Choosing and Setting up Cabinets with the S7 400 2 25 2 12 Rules for the Arrangement of Modules 2 29 2 13 Installing Modules in a Rack 2 30 2 14...

Страница 18: ...ou need interface modules IMs as well as the additional racks and additional power supply modules if necessary When using interface modules you must always use the appropriate partners you insert a send IM in the CR and the matching receive IM in each connected ER see Reference Manual Chapter 6 Central Rack CR and Expansion Rack ER The rack containing the CPU is known as the central rack CR The ra...

Страница 19: ...a the interface modules There must therefore be no power supply module inserted in an ER connected to an IM 460 1 IM 461 1 Up to 5 A may flow through each of the two interfaces of an IM 460 1 This means that each ER connected via an IM 460 1 461 1 can be powered with a maximum of 5 A at 5 V For further details see the Reference Manual Chapter 6 Overview of the Connections Observe the connection ru...

Страница 20: ...ack ER 4 Expansion rack ER 1 Expansion rack ER 1 Expansion rack ER 4 Expansion without 5 V local transfer Expansion with 5 V local transfer Remote expansion IM 460 0 IM 460 1 IM 460 3 Chain length max 102 25 m Chain length max 1 5 m IM 461 0 IM 461 0 IM 461 1 IM 461 3 IM 461 3 IM 460 4 Expansion rack ER 1 Expansion rack ER 4 Chain length max 605 m IM 461 4 IM 461 4 Chain length max 5 m ...

Страница 21: ...in one CR However only two send IMs with 5 V transfer are allowed in one CR Each chain connected to the interface of a send IM can comprise up to four ERs without 5 V transfer or one ER with 5 V transfer The exchange of data via the communication bus is limited to 7 racks meaning the CR and ER numbers 1 to 6 The maximum total cable lengths specified for the type of connection must not be exceeded ...

Страница 22: ...s from modules have no effect because no interrupt lines exist Modules are not supplied with 24 V ER2 9 Restricted I O bus ERs Modules are not supplied with 24 V i e modules requiring 24 V cannot be used see technical data of the modules Modules are neither backed up by the battery in the power supply module nor by the voltage applied externally to the CPU or receive IM EXT BATT socket CR2 18 I O ...

Страница 23: ... The I O bus is a parallel backplane bus designed for the fast interchange of I O signals Each rack has an I O bus Time critical operations to access the process data of the signal modules take place via the I O bus Communication Bus C Bus The communication bus C bus is a serial backplane bus designed for the fast exchange of large volumes of data parallel to the I O signals Except for racks ER1 a...

Страница 24: ...d into two I O bus segments of 10 and 8 slots respectively One CPU can be inserted per local bus segment The two CPUs in a segmented CR may be in different operating states The two CPUs can communicate with each other via the communication bus All the modules inserted in a segmented CR are powered by the power supply module at slot 1 Both segments have a common backup battery The following figure ...

Страница 25: ...o segments each The UR2 H rack used here functions as two electrically isolated UR2 racks on the same rack profile A subdivided CR has the following important characteristics The communication bus and I O bus are subdivided into two segments with 9 slots each Each segment represents a self contained CR The following figure shows a divided CR with a divided I O bus and communication bus 1 2 3 4 5 6...

Страница 26: ...he requirements for electrical safety see Reference Manual Chapter 1 Step 1 Retaining Distances Between Devices You must observe the minimum distances between the rack and neighboring devices You need these minimum clearances during installation and operation For fitting and removing modules For fitting and disconnecting the module front connectors To ensure the air flow required for cooling the m...

Страница 27: ... both sides The following figure shows how much space you need to allow for when using a cable duct or fan subassembly Cable duct fan subassembly 440 mm Mounting depth fitted max 237 mm 19 inch reference level 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 523 mm with cable duct 543 mm with fan subassembly Dimensions of the Racks The following figure shows the dimensions for racks with 18 9 and 4 sl...

Страница 28: ... 4 115 mm 258 mm 133 mm 483 mm Depth 28 mm without modules Depth 237 mm with modules Step 2 Mounting the Rack Screw the rack onto the mounting panel When mounting the equipment on a metal mounting plate make sure to establish a low impedance connection On varnished or anodized metals for example wlayws use a suitable contact agent or special contact washers Special measures need not be taken if yo...

Страница 29: ...p 3 Connecting the Rack to the Chassis Ground Connect the rack to the chassis ground A threaded bolt is provided for this purpose on the bottom left of the rack Minimum cross section of the conductor to the chassis ground 10 mm2 If the S7 400 is mounted on a mobile rack you must provide a flexible conductor to the chassis ground Note Always ensure that there is a low impedance connection to the ch...

Страница 30: ...mblies containing two or more racks make allowances for additional clearance between the racks for installing a fan subassembly or cable duct The figure below shows the clearance you must allow between two racks of the S7 400 during installation 110 mm 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 ...

Страница 31: ... mm for each additional rack with a cable duct or fan subassembly Mounting depth fitted max 237 mm 840 mm 19 inch reference level Cable duct fan subassembly Cable duct fan subassembly 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Note A minimum clearance as shown in the above figure between rack and cable duct or fan subassembly must not be provided but ...

Страница 32: ... non isolated configuration to the 5 V ground reference potential M logic ground Connect the chassis ground to the reference point for non isolated modules The reference point is metallically connected to the reference potential M The following figure shows the position of the reference point on a rack Grounding terminal Load voltage ground connection reference point 1 2 3 4 5 6 7 Metallic connect...

Страница 33: ...sembly Leave the metallic connection on the rack For the connection to the reference point use the original M4 x 8 Reference point Original screw with spring lock washer M4 x 8 Connection Spring lock washer Original screw with spring lock washer M4 x 8 Rack Ungrounded configuration Grounded configuration Metallic connection Connection Spring lock washer Note Do not use any cylinder head screws tha...

Страница 34: ... in cabinets you can use the cable duct or fan subassembly to optimize ventilation There are two methods of supplying air to the modules You draw in air either from the back or from below The cable duct and fan subassembly can be converted for this purpose The following figure shows the ventilation when air is drawn in from the back Exhaust air Cable duct or fan subassembly Exhaust air Modules Wal...

Страница 35: ...2 19 Automation System S7 400 Hardware and Installation A5E00850741 01 The following figure shows the ventilation when air is drawn in from the bottom Exhaust air Wall Supply air Cable duct or fan subassembly Modules Modules ...

Страница 36: ...nt of the cable duct or fan subassembly 2 Grasp the base with both hands press it gently downward and pull it fully out of the cable duct or fan subassembly 3 The base cover is secured with clips Firmly press down the cover in the clip areas to remove it 4 Snap the cover into the snap in hinges at the rear edge of the base rougly at a right angles to the base 5 Slide the base in again and push it ...

Страница 37: ...livered state Shipping state The cover is fitted in the base of the cable duct or fan subassembly Air is supplied from the back Filter Mat Optional To filter the air supply you can fit a filter mat for the cable duct and fan subassembly The filter mat is optional and is not part of the cable duct or fan subassembly Like the cover the filter mat can be inserted flat in the base or at its rear edge ...

Страница 38: ...ing figure shows you how to remove the left cover Left cover Quick release lock Plug in contact Snap in mechanism of dummy covers Back of cable routing Direction for pulling off Note Provide the fan subassembly with dummy plates beneath free slots this will ensure optimum ventilation The fan subassembly is supplied with 18 dummy plates arranged as 2 units each with 9 individual dummy plates By bre...

Страница 39: ...g 5 Then install the fan assembly in the 19 inch pitch directly under the rack or between two racks Use M6 size screws for mounting The following figure shows how to mount the fan subassembly between two racks Blanking cover 19 inch reference level 9 10 11 12 13 14 15 16 17 18 9 10 11 12 13 14 15 16 17 18 6 Refit the left cover 7 Secure the left cover with the quick release lock Monitoring the Fan...

Страница 40: ...ing the Cable Duct Procedure 1 Install the cable duct in the 19 inch pitch directly under the rack or between two racks Use M6 size screws for mounting The following figure shows how to mount the cable duct between two racks 19 inch reference level 9 10 11 12 13 14 15 16 17 18 9 10 11 12 13 14 15 16 17 18 ...

Страница 41: ...n in cabinets Types and Dimensions of Cabinets Observe the following criteria when selecting cabinet types and their dimensions Ambient conditions at the point of installation of the cabinet Required clearances for the racks Total power dissipation of components contained by the cabinet The ambient conditions at the point of installation of the cabinet temperature humidity dust effects of chemical...

Страница 42: ...ower dissipation permissible Heat accumulation usually occurs in the top of the cabinet Heat removal only through the cabinet wall Forced ventilation of the internal air results in improved heat removal and prevention of heat accumulation Heat removal through exchange between heated internal air and cold external air The increased surface of the folded area sectional wall of the heat exchanger and...

Страница 43: ...you observe the specified installation dimensions and clearances for racks Further information can be found in Siemens catalogs NV21 and ET1 200 400 600 800 1000 1200 1400 W Power dissipation 20 30 40 50 60 Ambient temperature in C 1 2 3 Figure 2 2 Max Cabinet Ambient Temperature as a Function of Power Dissipation of Equipment in the Cabinet Legend for Figure 2 2 1 Closed cabinet with heat exchang...

Страница 44: ...00 W Accumulated power loss 650 W Permissible ambient temperatures at an accumulated power loss as shown in Figure 2 2 Type of Cabinet Max Permissible Ambient Temperature Closed with natural convection and forced circulation Curve 3 no operation possible Open with through ventilation Curve 2 approx 38 C Closed with heat exchanger Curve 1 approx 45 C Cabinet dimensions Vital dimensional design fact...

Страница 45: ...ons applying to all modules not described in this manual The following table shows which modules can be used in the different racks Table 2 2 Modules in the different racks Modules Racks Racks UR1 UR2 UR2 H as CR UR1 UR2 as ER UR2 H as ER CR2 CR3 ER1 ER2 Power Supply Modules D D D D D CPUs D D Send IMs D D Receive IMs D D D Signal Modules D D D D D No IM 463 2 no adapter module no power supply mod...

Страница 46: ...es Grasp the dummy plate at the points marked and pull it forward and off With double and triple width modules you must remove the dummy plates from all the slots to be covered by the relevant module 2 Remove the cover if applicable from the module see Figure 2 3 3 Disconnect the power supply connector at the power supply module 4 Attach the first module and swing it downwards see Figure 2 4 If yo...

Страница 47: ...0850741 01 Removing the Cover With modules which have a cover for example power supply modules and CPUs you remove this before installing the module in the rack Proceed as follows 1 Push the interlock lever down 1 2 Swing the cover forward and off 2 2 1 Figure 2 3 Removing the Cover ...

Страница 48: ... Modules Attach the modules one by one 1 and swing them carefully downwards 2 If you feel a resistance when swinging the module down raise it slightly and then continue 1 2 Figure 2 4 Attaching the Modules Screwing the Modules in Place Tightening torque 0 8 to 1 1 Nm Figure 2 5 Screwing the Modules in Place ...

Страница 49: ...modules occupy two slots and are assigned the consecutive slot numbers of both slots Triple width modules occupy three slots and are assigned the consecutive slot numbers of these three slots Fitting Slot Labels You use slot labels to mark a module with its slot number The slot labels are provided with the rack as a number wheel To attach the slot labels 1 Hold the number dial on the module and ro...

Страница 50: ...a distributed local arrangement and are directly connected via PROFIBUS DP to a CPU One of the master capable CPUs of the S7 400 is used You can use the following devices for example as slaves i e as local inputs outputs ET 200M ET 200S ET 200X ET 200eco All DP standard slaves Networking You may connect your S7 400 to various subnets via Simatic Net CP Ethernet to an Industrial Ethernet subnet via...

Страница 51: ...s in the current CA 01 catalog Table 2 3 Accessories for Modules and Racks Module Accessories Supplied Accessories Not Supplied Purpose of the Accessory Rack UR CR ER Number wheel with slot labels For identifying the modules with slot labels Power Supply Module PS 1 or 2 backup batteries For central backup of RAM areas in the CPU CPU Memory cards Load memories required for the CPU Signal Module SM...

Страница 52: ...Installing the S7 400 2 36 Automation System S7 400 Hardware and Installation A5E00850741 01 ...

Страница 53: ...allation A5E00850741 01 Addressing the S7 400 Chapter Overview Section Description Page 3 1 Geographical and Logical Addresses 3 2 3 2 How to Determine the Default Address of a Module 3 4 3 3 How to Determine the Default Address of a Channel 3 6 3 ...

Страница 54: ...ignal module inserted Which channel 0 to 31 of this signal module is addressed Section 3 2 describes the method of establishing the geographical address of a channel Logical Addresses The logical address of a module and therefore of a channel is freely selectable It is used in the program to address read or write to a particular input or output The physical location of the relevant module need not...

Страница 55: ...default address Distributed I Os are not taken into account Conditions for Default Addressing The CPU assigns default addresses under the following conditions No multicomputing If only signal modules are inserted no IM CP FM inserted no expansion racks connected If signal modules are used with their default settings measuring ranges interrupt processing etc If modules are inserted in STOP mode or ...

Страница 56: ...f slots in an 18 slot rack You can also read off the slot numbers directly from the rack 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Default Addresses of Digital Modules On the S7 400 the default addresses for digital modules start from 0 First slot in the central rack which is usually occupied by the power supply module up to 68 18th slot The algorith...

Страница 57: ...esses for analog modules start from 512 first slot in the central rack which is usually occupied by the power supply module up to 1600 The algorithm used to calculate the default address of an analog module is Default address slot number 1 x 64 512 Example The default address of an analog module in the 6th slot is as follows Default address 6 1 x 64 512 832 ...

Страница 58: ...put module with 16 inputs two bytes are used Bits 0 to 7 in these bytes are then reserved by the individual inputs from top to bottom This is clarified by the following figure with the example of a digital input module with 32 channels at slot 12 default address 44 With a digital output module the first character is a Q instead of an I I 44 0 I 44 1 I 44 2 I 44 3 I 44 4 I 44 5 I 44 6 I 44 7 I 45 0...

Страница 59: ...o represents the address of the uppermost channel of the module the addresses of the individual channels from top to bottom increase by two bytes one word This is clarified by the following figure with the example of a digital input module with 8 channels at slot 6 default address 832 With an analog input module the first characters are IW instead of QW QW 832 QW 834 QW 836 QW 838 QW 840 QW 842 QW...

Страница 60: ...Addressing the S7 400 3 8 Automation System S7 400 Hardware and Installation A5E00850741 01 ...

Страница 61: ...lel Wiring of Digital S7 400 Outputs 4 12 4 9 Grounding 4 13 4 10 Interference Free Configuration for Local and Remote Connections 4 15 4 11 Wiring Rules 4 17 4 12 Wiring the Power Supply Module 4 18 4 13 Wiring the Signal Modules 4 22 4 14 Wiring the Front Connector Crimping 4 24 4 15 Wiring the Front Connector Screw Terminals 4 25 4 16 Wiring the Front Connector Spring Type Terminals 4 26 4 17 F...

Страница 62: ...your system requirements line voltage current consumption of the modules used You must provide load voltages and currents via external load current power supplies The following figure shows how the individual modules of the S7 400 are supplied with current and voltage S7 400 power supply module S7 400 modules DC or AC Operating voltages 5 VDC and 24 VDC viabackplanebus Load current via front conne...

Страница 63: ...dules SM 422 DO 32 x 24 VDC 0 5A 1 send IM IM 460 0 You can calculate Current Consumption I in this rack as follows with the data from the individual data sheets Module Quantity 5 VDC Max Current Consumption Values I Module I Total CPU 417 4 1 2600 mA 2600 mA SM 431 AI 16 x 16 bits 3 700 mA 2100 mA SM 421 DI 32 x 24 VDC 5 30 mA 150 mA SM 422 DO 32 x 24 VDC 0 5A 6 200 mA 1200 mA IM 460 0 1 140 mA 1...

Страница 64: ... bridge rectification Load Current Power Supplies The DC load current power supply must meet the following requirements Only a safe isolated extra low voltage of 60 VDC may be used as the load current supply Isolation may be implemented according to the requirements of the following amongst other publications VDE 0100 410 HD 384 4 41 S2 IEC 60364 4 41 as a functional extra low voltage with isolati...

Страница 65: ...able Controller Compare Ref to Figure 4 1 page 4 6 VDE 0100 VDE 0113 Disconnection element for control system sensors and actuators Part 460 Main switches Part 1 Isolating switches Short circuit and overload protection in groups for sensors and actuators Part 725 Single pole protection of circuits Part 1 With grounded secondary circuit single pole protection Otherwise all pole protection Load curr...

Страница 66: ...with supply from a TN S system Note The arrangement of supply terminals shown is not the actual arrangement it has been chosen for reasons of clarity Ground bus in cabinet N L1 L M PS CPU L1 L2 L3 N Load circuit 24 to 230 VAC for AC modules Load circuit 5 to 60 VDC for isolated DC modules Cabinet AC AC AC DC Signal modules Low voltage distribution e g TN S system 3 x 400 V PE SM Racks P E Data Fig...

Страница 67: ...e element of the racks Situated behind this connection is an RC network which is placed in the circuit for the ungrounded configuration This connection is located at the left edge of the rack The terminal for the chassis ground also has an electrical connection to the frame element Shown in Figure 4 2 is an S7 400 configured with grounded reference potential To ground the reference potential M you...

Страница 68: ... the rack Terminal Connection Model Shown in Figure 4 3 is an S7 400 configured with ungrounded reference potential In this case you must remove the jumper between reference potential M and the frame element terminal on the rack The reference potential M of the S7 400 is then connected via the RC network to the chassis ground terminal When you connect this terminal to the chassis ground RF interfe...

Страница 69: ...le filter such as the B84102 K40 Insulation Monitoring If a double fault could cause a hazardous state in the installation you must provide insulation monitoring Example of Ungrounded Operation If you have configured an S7 400 with a local connection and you only wish to ground the overall installation at the CR you can operate the ERs in an ungrounded configuration Note If you connect an ER via a...

Страница 70: ... AC load circuits DC load circuits with a separate reference potential Examples of load circuits with a separate reference potential DC load circuits whose sensors have different reference potentials for example when grounded sensors are used far from the programmable controller and equipotential bonding is not possible DC load circuits whose positive terminal L is grounded battery circuits Isolat...

Страница 71: ...ed Modules Shown in Figure 4 4 are the potentials of an S7 400 configured with isolated input and output modules PS CPU L1 N L L1 N DI DO PE Rack Uinternal Data Mexternal 230 VAC load current PS Ground bus in cabinet 24 VDC load current PS Figure 4 4 Simplified Representation of Configuration with Isolated Modules ...

Страница 72: ...voltage 2L or a rated load voltage 3L is only possible using series diodes 1 L 2 L 3 L Figure 4 5 Parallel Wiring of a Digital Output with Different Rated Load Voltages Parallel Wiring of a Digital Output with Identical Rated Load Voltages If the L supplies of the digital output modules and the L voltage connected in parallel to the output are always the same difference 0 5 V there is no need to u...

Страница 73: ...ment of Safety Class I and all large metal parts must be connected to the protective ground This is essential to ensure that the user of the installation is reliably protected from electric shock Furthermore this serves to discharge interference transferred via external power supply cables signal cables or cables to I O devices Shown in Table 4 2 are the grounding methods required for the individu...

Страница 74: ...olated operation Grounded configuration Ungrounded configuration to the reference point of the rack metallic connection between frame element and chassis ground must be fitted to the reference point of the rack metallic connection between frame element and chassis ground must be fitted Floating operation Grounded and ungrounded configuration Left open or to any point but not to protective ground o...

Страница 75: ...interference currents Interference Free Configuration for Remote Connections If you connect the CR and ER via suitable interface modules send IM and receive IM normally no particular shielding and grounding need be implemented Special shielding and grounding may become necessary if you operate your system in an environment with an extremely high level of interference In that case observe the follo...

Страница 76: ...al bonding conductor copper conductor with a cross section of 16 mm2 CR ER Send IM Receive IM Shield protective ground bar 7 V Figure 4 8 Shielding and Grounding the Connecting Cable for a Remote Connection Special Cases For remote connections you must use precut preassembled connecting cables of fixed length When the connecting cables are laid therefore there may be excess lengths These must be c...

Страница 77: ...0 mm with ferrule 8 to 10 mm without ferrule 10 mm with ferrule Wire end ferrules 230 VAC with insulating collar to DIN 46228 E1 5 8 24 VDC without insulating collar to DIN 46228 shape A short version with or without insulating collar to DIN 46228 Part 1 or 4 Shape A normal version with or without insulating collar to DIN 46228 Part 1 or 4 Shape A normal version Blade width and shape of the screw ...

Страница 78: ...The two versions are coded meaning an AC connector can only be plugged into an AC power supply module and a DC connector can only be plugged into a DC power supply module Disconnecting the Power Supply Connector Before wiring you must unplug the power supply connector from the power supply module 1 Open the cover of the power supply module 2 Detach the connector by levering it off with a suitable ...

Страница 79: ...y module from the supply 2 Are you using a flexible sheathed cable with outer insulation with 230 VAC If so Strip the outer insulation over a length of 70 mm Note that an overall cable diameter of between 3 mm and 9 mm must be present under the strain relief after connection If not Wrap the cores with insulating tape so that an overall cable diameter of between 3 mm and 9 mm will be present under ...

Страница 80: ...1 N PE PE L Terminals Cable Strain relief assembly Screw for the strain relief assembly Figure 4 10 Wiring the power supply connector 8 Tighten the screw of the strain relief so that the cable is secured properly 9 Close the power supply connector and screw on the cover Caution The power supply module or power supply connector can be damaged If you plug in or disconnect the connector with voltage ...

Страница 81: ...onnector into the power supply module follow the steps outlined below 1 Open the cover of the power supply module 2 Insert the power supply connector into the guide groove in the module housing 3 Slide the power supply connector into the power supply module as far as it will travel 4 Close the cover of the power supply module The following figure shows how to plug the power supply connector into t...

Страница 82: ...nal modules 1 Wire the front connector This includes all incoming and outgoing connections of the sensorsan actuators 2 Install the front connector on the module The Three Types of Front Connector Three types of front connector are available for the S7 400 signal modules Front connector with crimp terminals Front connector with screw terminals Front connector with spring loaded terminals ...

Страница 83: ... cover completely 3 Pull the opened cover forward at the bottom and swing it up Levering the cover off Opening the cover Pulling the cover off Figure 4 12 Preparing to wire the front connector 4 Cut the wires to length Avoid any loops in the front connector after wiring 5 Strip the wires according to the table in Section 4 11 Note The front connector contains a jumper which is required to enable s...

Страница 84: ...he conductors at a length of approx 5 mm 2 Crimp the contacts onto the conductors A crimptool is aailable on order as an accessory for your signal modules 3 Insert the crimp contacts into the recesses of the front connector starting at the bottom The order number for crimp contacts is found in Appendix C of the Reference Manual Figure 4 13 Wiring a Front Connector with Crimp Terminals ...

Страница 85: ...es Strip the conductors at a length of 10 mm Press fit the wire end ferrules onto the conductors If not Strip the conductors at a length of 8 to 10 mm 2 Terminate the wires starting at the bottom of the front connector 3 Screw the ends of the conductors onto the front connector tightening torque 0 6 to 0 8 N m Also tighten the unwired terminals 0 6 0 8 Nm Figure 4 14 Wiring a Front Connector with ...

Страница 86: ...o 10 mm 2 Use a screwdriver 0 5 x 3 5 mm DIN 5264 to release the spring contact of the first terminal Start at the bottom of the front connector You can release the individual spring contacts at three points from the front from the side or from the back see Figure 4 15 3 Push the first wire into the released spring contact and withdraw the screwdriver 4 Repeat steps 3 and 4 for all other wires Rel...

Страница 87: ...ed terminal The following figure shows the principle of spring contacts Releasing and engaging from the front is illustrated 1 Insert the screwdriver 2 Insert the wire into the spring contact as far as it will go 3 Withdraw the screwdriver the wire is trapped by the contact Figure 4 16 Principle of the spring contact ...

Страница 88: ...have wired the front connector the cable tie provided should be fitted at the bottom of the front connector as a strain relief for the connected cable There are three ways of fitting the strain relief according to the thickness of the cable Three openings are provided at the bottom of the front connector Figure 4 17 Fitting a Strain Relief Viewed from Below ...

Страница 89: ...low the steps outlined below 1 Enter the addresses of the individual channels on the two labels Note the slot numbers on the labels to record the assignment of front connector to module 2 Place a label on the left of the opened front connector The label has a T shaped blank in the middle with which you can fix the label onto the front connector housing Bend the blank slightly to one side and push ...

Страница 90: ...ng FMs modules The perforated labeling strips are available on DIN A4 sheets and can be easily separated without the use of a tool This makes them easy to use and ensures a clean cut The single color labels are tear proof and dirt resistant They are available in petrol light beige red and yellow SIMATIC S7 400 I O modules can be easily labeled application specifically by machine using a standard l...

Страница 91: ...s Proceed as follows a Select page layout view in WORD to edit the template forms b Label the module by clicking in the text boxes and entering the application specific designation c Always print a preview of the form on white paper and compare the layout with the original labeling sheets Because there are differences between the different printers and printer drivers and their accuracy the dimens...

Страница 92: ...ment cannot be plugged into this signal module Front Connector Coding on the Signal Modules Shown in the following table is the allocation between the different front connector coding keys and individual signal modules Table 4 4 Front connector coding elements Signal Modules Color of Front Connector Coding Key g red yellow green Digital inputs outputs 60 VDC or 50 VAC F 1 Digital inputs outputs 60...

Страница 93: ...d the front connector horizontally and engage the front connector with the coding key After an audible click the front connector will engage with the mount and can be swung upwards 2 Swing the front connector upwards The two parts of the coding key will then be separated 3 Screw the front connector on Coding key 1 2 Figure 4 20 Attaching the Front Connector ...

Страница 94: ...Wiring the S7 400 4 34 Automation System S7 400 Hardware and Installation A5E00850741 01 Figure 4 21 shows how to screw on the front connector Figure 4 21 Screwing On the Front Connector ...

Страница 95: ...dy Allow for the maximum cable lengths permitted for your assembly see Chapter 2 and check that you have the correct cables see Reference Manual Module Specifications Chapter 6 2 Start with the send IM the interface module in the central rack 3 Open the cover of the send IM 4 Plug the male connector of the first connecting cable into one of the female connectors of the send IM and screw tighten it...

Страница 96: ...the receive IM and screw the connector on 9 Connect the remaining receive IMs by connecting one send interface lower female connector X2 to one receive interface upper male connector X1 in each case Send IM Receive IM Receive IM Terminator Figure 4 23 Connection Between a Send IM and Two Receive IMs 10 Plug the terminator into the lower female connector of the receive IM in the last ER of the chai...

Страница 97: ...you change the voltage range you must also fit the fuse for this voltage range in the fan subassembly Replacing the fuse is described in Chapter 7 Wiring the Fan Subassembly 1 Strip the cables of the power cable Press fit wire end ferrules onto the conductors 2 Insert the wires in the power terminals of the fan subassembly Use a suitable screwdriver to release the spring contacts of the power term...

Страница 98: ...er 6 You can secure the cables to these eyes with cable ties for example Shield Contact The cable duct and fan subassembly offer the facility of electrical contact for cable shields You can use the shield clamps provided see Reference Manual Module Specifications Chapter 9 To establish contact for the cable shields strip the outer insulation in the region of the shield clamp and trap the cable shi...

Страница 99: ...w Section Description Page 5 1 Configuring a Network 5 2 5 2 Fundamentals 5 3 5 3 Rules for Configuring a Network 5 7 5 4 Cable Lengths 5 15 5 5 PROFIBUS DP Bus Cables 5 18 5 6 Bus Connectors 5 19 5 7 RS 485 Repeater Diagnostics Repeater 5 21 5 8 PROFIBUS DP Network with Fiber Optic Cables 5 22 5 ...

Страница 100: ...g an MPI network The same configuration rules apply Multipoint Interface MPI This interface of the CPU uses a Simatic S7 specific protocol for the communication with programming devices by means of STEP 7 operator panels and other S7 CPUs The bus structure corresponds to PROFIBUS Configuring Communication In order that the individual nodes of an MPI or PROFIBUS DP network can communicate with each...

Страница 101: ...ich data is transmitted expressed in terms of bits per second Baud rates of 19 2 kbps to 12 Mbps are possible for interfaces of the type MPI DP Transmission rates of 9 6 kbps to 12 Mbps are possible for interfaces of the type PROFIBUS DP Note If you change the parameter assignment of the MPI DP interface transmission rate the new transmission rate remains set even after memory reset voltage failur...

Страница 102: ...mmunicate with one another you must assign them an address In the MPI network an MPI address A PROFIBUS DP address in the PROFIBUS DP network Default MPI Addresses The following table shows the default MPI address and the max MPI address with which the devices are shipped Node Device Default MPI Address Default Highest MPI Address Programming device 0 31 OP 1 31 CPU 2 31 Note If you change the par...

Страница 103: ...nnection for example SIMATIC NET CPs FM 456 etc this module can be reached via the CPU to whose MPI the programming device or operator panel is connected In this case the CPU simply acts as an intermediary for the transfer This type of connection between a programming device or operator panel and a module only communicating via the communication bus occupies two connection resources in the CPU CPU...

Страница 104: ...igure 5 2 Data Exchange Process communication including communication services for data exchange between programmable controllers PLC PLC and between programmable controllers and operator interface stations PLC OS OP has priority in CPUs over communication between programming devices and CPUs The CPUs have different characteristics One of these characteristics is their communication performance If...

Страница 105: ...Only use spur lines for connecting the programming devices OPs to the network which are needed for startup or maintenance If you operate more than 32 nodes in a PROFIBUS DP network you must connect the bus segments via RS 485 repeaters In a PROFIBUS DP network all bus segments together must have at least one DP master and one DP slave You connect ungrounded bus segments and grounded bus segments v...

Страница 106: ...rve MPI address 2 for a new CPU You thus avoid the duplication of MPI addresses after a CPU with a default setting has been installed in the MPI network for example when replacing a CPU Thus you assign an MPI address higher than 2 to all CPUs in the MPI network Recommendation for PROFIBUS DP Addresses Reserve PROFIBUS DP address 0 for a service programming device which will later be briefly connec...

Страница 107: ...g resistor switched on Terminating resistor switched off Figure 5 3 Terminating resistor on bus connector Terminating Resistor on the RS 485 Repeater DC 24 V L M PE M 5 2 A1 B1 A1B1 A2B2A2B2 SIEMENS RS 485 REPEATER ON ON Terminating resistor for bus segment 1 Terminating resistor for bus segment 2 Figure 5 4 Terminating resistor on RS 485 repeater ...

Страница 108: ...sistor in the MPI Network The figure below shows where you have to connect the terminating resistor in a possible configuration for an MPI network RS 485 repeater Terminating resistor switch on S7 400 S7 400 S7 400 Spur line S7 300 OP OP PG Programming device Figure 5 5 Terminating resistor on MPI network ...

Страница 109: ...ted via spur line for startup maintenance with default MPI address Connected to the MPI later on with default MPI address 0 x MPI address of nodes Terminating resistor switch on S7 400 S7 400 S7 400 S7 400 S7 400 S7 400 0 11 7 8 9 10 1 2 3 4 5 6 OP OP PG OP S7 300 Programming device Figure 5 6 Example of an MPI network ...

Страница 110: ...etwork 0 x PROFIBUS DP addresses of nodes S7 400 with CPU 414 2 DP as DP master ET 200M 0 6 7 8 1 2 3 4 5 PG OP PG ET 200M S5 95U ET 200B ET 200B Terminating resistor switched on Only connected via spur line for startup maintenance with default PROFIBUS DP address 0 Figure 5 7 Example of a PROFIBUS DP network ...

Страница 111: ...aneously used as DP master in a PROFIBUS DP network In both networks the node numbers can be assigned separately without conflicts resulting OP S7 400 S7 400 with CPU 414 2 as DP master ET 200M ET 200B RS 485 repeater PG S7 400 S7 400 OP ET 200M ET 200B S7 200 S7 300 OP S7 300 Only connected via spur line for startup maintenance Terminating resistor switched on MPI network PROFIBUS DP network Figu...

Страница 112: ...mming device PC 2 Programming device PC 3 Programming device PC 1 MPI network 1 S7 400 with CPU 417 S7 400 with CPU 416 S7 300 with CPU 318 S7 300 with CPU 318 MPI network 3 Figure 5 9 Programming device access beyond network limits Requirements Use STEP 7 from version 5 0 onwards Assign STEP 7 to a programming device or PC on the network SIMATIC Manager Assign programming device PC The network li...

Страница 113: ... 2 Permitted Cable Length of a Segment in the PROFIBUS DP Network Depending on the Transmisson Rate Transmission Rate Maximum Cable Length of a Segment in m 9 6 to 187 5 Kbps 1000 500 Kbps 400 1 5 Mbps 200 3 to 12 Mbps 100 Longer Cable Lengths If you have to implement cable lengths which are longer than permissible in one segment you must interconnect RS 485 repeaters The maximum possible cable le...

Страница 114: ...ines per Segment Transmission Rate Maximum Length of a S Li Number of Nodes per Spur Line Length of Maximum Length of S Li g Spur Line 1 5 m and 1 6 m 3 m g Spur Lines per Segment 9 6 to 93 75 kbps 3 m 32 32 96 m 187 5 kbps 3 m 32 25 75 m 500 kbps 3 m 20 10 30 m 1 5 Mbps 3 m 6 3 10 m A spur line is not permissible with transmission rates greater than 1 5 Mbps To connect a programming device or PC ...

Страница 115: ...rifies the maximum possible distances in an MPI network max 50m max 50m max 1000m RS 485 repeater RS 485 repeater S7 400 S7 400 S7 400 S7 400 S7 400 Spur line 0 11 7 8 9 10 3 4 5 6 OP PG OP OP Programming device connected via spur line for maintenance Terminating resistor switched on 0 x MPI addresses of nodes Programming device Figure 5 10 Configuration of an MPI network ...

Страница 116: ... the following characteristics Characteristics Values Impedance approx 135 to 160 Ω f 3 to 20 MHz Loop resistance 115 Ω km Working capacitance 30 nF km Attenuation 0 9 dB 100 m f 200 kHz Permissible core cross section 0 3 mm2 to 0 5 mm2 Permissible cable diameter 8 mm 0 5 mm Rules for Laying Cables When you lay the PROFIBUS DP bus cable you should not Twist it Stretch it or Compress it Furthermore...

Страница 117: ...us connector without PG connector 6ES7972 0BA12 0XA06 6ES7972 0BA41 0XA0 6ES7972 0BA50 0XA0 6ES7972 0BA60 0XA0 6ES7972 0BA30 0XA0 Bus connector with PG connector 6ES7972 0BB12 0XA0 6ES7972 0BB41 0XA0 6ES7972 0BB50 0XA0 6ES7972 0BB60 0XA0 Appearance 6ES7972 0B 20 Screws for mounting on station PG connector only with 6ES7 972 0BB20 0XA0 9 pin sub D male connector for connection to MPI or PROFIBUS DP...

Страница 118: ...sistor not switched on Figure 5 12 Switch on terminating resistant Ensure that power is always applied to the stations at which the terminating resistor is situated during startup and operation Removing the Bus Connector With a looped through bus cable you can remove the bus connector from the PROFIBUS DP interface at any time without interrupting data traffic on the bus Warning Interference to th...

Страница 119: ...85 repeater can be found in the Reference Manual Module Specifications Chapter 10 Assembly You can install the repeater on a 35 mm standard profile rail Wiring the Power Supply Unit To wire the power supply unit of the repeater proceed as follows 1 Open the M and PE screws 2 Strip the 24 VDC power supply cable 3 Terminate the cable to L and M or PE Terminal M5 2 Terminal M5 2 should not be wired b...

Страница 120: ... up optical networks with the Optical Link Module OLM is described in detail in the SIMATIC NET PROFIBUS Networks manual You will find below the most important information on setting up an optical PROFIBUS DP network with PROFIBUS nodes that have an integrated fiber optic cable interface Benefits and Areas of Application Fiber optic cables have the following advantages over electrical cables Elect...

Страница 121: ... of the partyline topology none of the downstream DP slaves can be accessed by the DP master Programming device PC OP PROFIBUS cable Optical PROFIBUS DP Distances between 2 nodes Plastic fiber optic cable up to 50 m PCF fiber optic cable up to 300 m OBT OBT S7 400 with IM 467 FO ET 200M with IM 153 2 FO Other field devices without fiber optic cable interface Other nodes Figure 5 13 Optical PROFIBU...

Страница 122: ...es of the Fiber Optic Cables Description SIMATIC NET PROFIBUS Plastic Fiber Optic Duplex Conductor Plastic Fiber Optic Standard Cable PCF Fiber Optic Standard Cable Standard designation I VY2P 980 1000 150A I VY4Y2P 980 1000 60A I VY2K 200 230 10A17 8B20 Field of application Indoors with a low mechanical load such as laboratory test assemblies or in cabinets Cable lengths up to 50 m Indoor applica...

Страница 123: ...m 100 N 10 cm 750 N 10 cm Bend radius Single bend without tensile force Multiple bends with tensile force 30 mm 50 mm flat side only 100 mm 150 mm 75 mm 75 mm Permissible environmental conditions Transport storage temperature Laying temperature Operating temperature 30 _C to 70 _C 0 _C to 50 _C 30 _C to 70 _C 30 _C to 70 _C 0 _C to 50 _C 30 _C to 70 _C 30 _C to 70 _C 5 _C to 50 _C 20 _C to 70 _C R...

Страница 124: ...rs per meter 50 m ring 100 m ring 6XV1821 0AH10 6XV1821 0AN50 6XV1821 0AT10 SIMATIC NET PROFIBUS PCF fiber optic standard cable I VY2K 200 230 10A17 8B20 PCF fiber optic cable with 2 conductors PVC outer sheath fitted with 4 Simplex connectors whip length 30 cm each for distances up to 300 m Other lengths on request 50 m 75 m 100 m 150 m 200 m 250 m 300 m 6XV1821 1CN50 6XV1821 1CN75 6XV1821 1CT10 ...

Страница 125: ...tors and a Special Connector Adapter for the IM 153 2 FO and IM 467 FO installed Order Numbers You can order Simplex connectors and connector adapters unjdedr the following order numbers Table 5 6 Order Numbers Simplex connectors and connector adapters Accessories Order Number SIMATIC NET PROFIBUS plastic fiber optic Simplex connector polishing set 100 Simplex connectors and 5 polishing sets for f...

Страница 126: ... Network 32 nodes in m Plastic fiber optic duplex conductor 50 1 550 Plastic fiber optic standard cable 50 1 550 PCF fiber optic standard cable 300 9 300 Mixed Use of Plastic Fiber Optic and PCF Fiber Optic Cable To gain the maximum benefit from the different cable lengths you can mix the plastic and PCF fiber optic cables For example you can use plastic fiber optic cable for connections between D...

Страница 127: ...on instructions and use only the tools specified there Grind and polish the fiber ends carefully Note Polishing the fiber ends of the fiber optic cable as described in the installation instructions reduces attenuation by 2 dB Grind and polish by pressing the connector only lightly against the abrasive paper or polishing foil in order to prevent the connector fusing with the fiber Ensure that you m...

Страница 128: ...Networking 5 30 Automation System S7 400 Hardware and Installation A5E00850741 01 ...

Страница 129: ...3 6 3 Connecting a Programming Device PG to an S7 400 6 5 6 4 Switching On an S7 400 for the First Time 6 6 6 5 Resetting the CPU with the Mode Selector Switch 6 7 6 6 Cold Warm and Hot Restarts with the Mode Selector Switch 6 10 6 7 Inserting a Memory Card 6 11 6 8 Inserting a Backup Battery Option 6 13 6 9 Starting Up a PROFIBUS DP Subnet 6 17 6 10 Installing Interface Submodules CPU 414 3 414 3...

Страница 130: ...nted rack you must insert both CPUs for the preliminary commissioning phase Check the LED indicators on the two modules The meanings of these LED indicators can be found in the Reference Manual Module Specifications Chapter 3 and in the reference manual CPU Data 3 Insert additional modules in the CR one at a time and start them up one at a time 4 If required connect the CR to ERs by inserting one ...

Страница 131: ...al CPU Data Chapter Racks Are the racks secured on the wall in the frame or cabinet 2 Have the necessary clearances been allowed 2 Are cable ducts or fan subassemblies correctly installed 2 Is the ventilation in order 2 Grounding and Chassis Ground Concept Is there a low impedance connection large surface large area contact to the chassis ground 2 On all racks is the connection bet ween reference ...

Страница 132: ...observed 2 Have the correct cables been used for connections to existing ERs 2 4 7 Is the last receive IM of each connec tion chain terminated with the right terminator 7 Power Supply Module Is the power supply connector cor rectly wired 4 On AC PS modules is the voltage selector switch set to the available line voltage 4 3 On fan subassemblies is the voltage selector switch set to the available l...

Страница 133: ...the BATT INDIC switch to BATT want to monitor a backup battery with a double or triple width power supply module set the BATT INDIC switch to 1BATT want to monitor two backup batteries with a double or triple width power supply module set the BATT INDIC switch to 2BATT 6 3 Connecting a Programming Device PG to an S7 400 Connecting a Programming Device PG to an S7 400 You must connect the programmi...

Страница 134: ...switch of the power supply module from the standby setting to the I setting output voltages at rated value Result On the power supply module the green 5 VDC and 24 VDC LEDs light up On the CPU The yellow CRST LED lights up The yellow STOP LED flashes for three seconds at 2 Hz During this time the CPU automatically executes a reset The yellow STOP LED lights up after the automatic reset If the red ...

Страница 135: ...program in the CPU the CPU transfers the user program and the system parameters stored on the Flash card into the main memory after the memory reset When Should a CPU be Reset You must reset the CPU Before transferring a new complete user program to the CPU When the CPU requests a reset Your recognize this request by slow flashing of the STOP LED at 0 5 Hz How to Perform a Memory Reset There are t...

Страница 136: ...OP LED lights up 2 Set the switch to MRES and hold it there Result The STOP LED is switched off for one second on for one second off for one second and then remains on 3 Turn the switch back to the STOP setting then to the MRES setting again within the next 3 seconds and back to STOP Result The STOP LED flashes for at least 3 seconds at 2 Hz reset is being executed and then remains lit Case B The ...

Страница 137: ...ory utilization level of 0 You can read out the memory utilization level with STEP 7 If a Flash card is inserted the CPU copies the user program and the system parameters stored on the Flash card into the main memory after the reset What Remains Following the Memory Reset After the CPU has been reset the following remains The contents of the diagnostic buffer The contents can be read out with the ...

Страница 138: ... at the start position startup OB or OB 1 After a power supply interruption the warm restart function is only available in backup mode Hot restart Wihen a hot restart is performed all data and the process image retain their last valid value Program execution is resumed at the breakpoint The outputs do not change their status until the current cycle is completed After a power supply interruption th...

Страница 139: ...when power is removed What Type of Memory Card Should You Use There are two types of memory card RAM cards and Flash cards Whether you use a RAM card or a Flash card depends on how you intend to use the memory card If You Then only intend to expand the integrated load memory of the CPU you should use a RAM card want to store your user program permanently on the memory card even with power removed ...

Страница 140: ... The CPU requests a memory reset by slow flashing of the STOP LED at 0 5 Hz 3 Perform a memory reset on the CPU by pressing the mode selector switch in MRES position and then resetting it to STOP Result The STOP LED flashes for at least 3 seconds at 2 Hz reset is being executed and then remains lit Marker dot Figure 6 3 Inserting a Memory Card in a CPU Note If you insert or remove the memory card ...

Страница 141: ...sion rack via the EXT BATT socket on the receive IM Inserting a Backup Battery To insert the backup battery batteries in the power supply module proceed as follows 1 Discharge any static charge by touching a grounded metal part of the S7 400 2 Open the cover of the power supply module 3 Insert the backup battery batteries in the battery compartment Ensure correct polarity of the battery 4 Switch o...

Страница 142: ...Commissioning 6 14 Automation System S7 400 Hardware and Installation A5E00850741 01 The following figure shows how to insert a backup battery in the single width power supply module ...

Страница 143: ...on The following instructions should therefore be observed without fail Do not throw new or discharged batteries into a fire and do not solder onto the cell body max temperature 100 C Do not recharge there is a risk of explosion Do not open the battery and only replace it with one of the same type Obtain the replacement via Siemens see the Reference Manual Module specifications appendix C for the ...

Страница 144: ...tery has reached its rated voltage the error message of the power supply module can be acknowledged with the FMR button Since the storage time of the lithium battery is not usually known we recommend the following procedure Insert the backup battery batteries in the battery compartment Acknowledge any battery error message of the power supply module with the FMR button If the battery error cannot ...

Страница 145: ...ion Connections with STEP 7 2 Switch on all DP slaves 3 Switch the CPU from STOP to RUN Behavior of the CPU During Startup During startup the CPU compares the preset and actual configurations You set the duration of the test with STEP 7 in the Startup parameter block with the module time limits parameter See also Reference Manual Chapter 1 the manual Configuring Hardware and Communication Connecti...

Страница 146: ...tion synchronization submodules Always switch off the power supply before inserting or removing interface submodules Caution Danger of damage to persons and property Interface submodules contain electronically sensitive components that may be damaged if they are touched The surface temperatures on the components can reach up to 70o C and there is a risk of burning For this reason you should always...

Страница 147: ...t 4 Important Secure the front plate with the two fitted captive M2 5 x 10 slot head screws on the left frame of the card slot Guide rails Figure 6 4 Inserting Interface Submodules in the CPU Covering Unused Submodule Slots On delivery all the submodule slots are secured with a submodule cover The cover is attached to the frame of the card slot with screws Leave unused submodule slots secured ...

Страница 148: ...Commissioning 6 20 Automation System S7 400 Hardware and Installation A5E00850741 01 ...

Страница 149: ...ng Digital or Analog Modules 7 7 7 5 Changing the Fuses in the Digital Modules 7 9 7 6 Replacing Interface Modules 7 11 7 7 Replacing the Fuse of the Fan Subassembly 7 13 7 8 Replacing Fans in the Fan Subassembly During Operation 7 14 7 9 Replacing the Filter Frame of the Fan Subassembly During Operation 7 16 7 10 Replacing the Power Supply PCB and Monitoring PCB of the Fan Subassembly 7 18 7 11 R...

Страница 150: ... Ensure correct polarity of the battery batteries 5 Switch on battery monitoring with the BATT INDIC slide switch If You Then have a single width power supply module set the BATT INDIC switch to BATT have a double or triple width power supply module and want to monitor a backup battery set the BATT INDIC switch to 1BATT have a double or triple width power supply module and want to monitor both bac...

Страница 151: ...material damage release of hazardous substances Lithium batteries can explode if handled improperly Their improper disposal may result in the release of hazardous substances Strictly adhere to the following in structions Do not throw a new or low battery into an open fire and do not perform any sol dering work on the cell casing max temperature 100 C Do not recharge the battery risk of explosion D...

Страница 152: ...wer supply module to 0 V output voltages 4 Set the line disconnector to OFF 5 Remove the cover 6 Remove the backup battery batteries if applicable 7 Disconnect the power supply connector from the power supply module 8 Loosen the mounting screws of the module 9 Swing the module out Installing a New Module 1 Check the voltage selector switch 2 Attach the new module of the same type and swing it down...

Страница 153: ...ly the number to the new module Saving the Data Save the user program including configuration data Removing the Module 1 Set the CPU mode switch to STOP 2 Set the standby switch of the power supply module to 0 V output voltages 3 Remove the cover of the CPU 4 Disconnect the MPI connector if applicable 5 Disconnect the connector at the EXT BATT socket if applicable 6 Remove the memory card 7 Loosen...

Страница 154: ...a Flash card Transfer the user and configuration data Set the CPU mode switch to RUN Close the cover 8 If your system is not configured for networking proceed as follows Transfer the user and configuration data by means of the programming device via the programming device cable see Section 6 3 Set the CPU mode switch to RUN Close the cover 9 If your system is configured for networking proceed as f...

Страница 155: ...he CPU mode switch to STOP Warning Improper handling of the front connectors can result in injury and damage If the front connector is removed and inserted during operation hazardous voltages of 25 VAC or 60 VDC may be present at the pins of the module When such voltages are present at the front connector modules with power applied may only be replaced by electrical specialists or trained personne...

Страница 156: ...ot and swing it downwards 2 Screw the module on with both mounting screws 3 Fit the front connector 4 If you have set the CPU to STOP you must now set it to RUN again 5 After fitting each programmable module will be reinitialized by the CPU with parameters How the S7 400 Behaves after Exchanging Modules If an error occurs after replacing a module you can read out the cause of the error from the di...

Страница 157: ...FF00 0AA0 Digital output module SM 422 DO 16 x AC 120 230 V 2A 6ES7422 1FH00 0AA0 Check the Plant Correct the faults which led to the fuses blowing Changing the Fuses To change the fuses in a digital module you must remove the front connector from the digital module and remove the module from the rack Warning Improper handling of the digital modules can result in injury and damage Hazardous voltag...

Страница 158: ...ctor and pull it off 3 Loosen the mounting screws of the module 4 Swing the module out Note In order that the removal and insertion of digital modules can be detected by the CPU a minimum time of two seconds must elapse between removal and insertion 5 Remove the covers on the right hand side of the module by levering them out with a screwdriver 6 Replace the defective fuses with new fuses of the s...

Страница 159: ...ace modules and or corresponding connecting cables with power applied data may be lost or corrupted Switch off the power supply modules of the CR and ERs on which you are working before carrying out any actions Removing Modules Exchanging Cables 1 If you wish to back up your data in the CPU you can do this with a backup battery or via an external battery supply at the CPU see the CPU Data Referenc...

Страница 160: ...ards 3 Screw the module on 4 Fit the connecting cables 5 Plug in the terminator if applicable 6 Secure the cover 7 First switch on the power supply module in the ER 8 Then switch on the power supply module in the CR 9 Set the CPU mode switch to RUN mode How the S7 400 Behaves after Exchanging Modules If an error occurs after replacing a module you can read out the cause of the error from the diagn...

Страница 161: ... switch is set to 230 V 250 mA slow blow if the voltage selector switch is set to 120 V Replacing the Fuse To replace the fuse of the module follow the steps outlined below 1 Disconnect the power cable of the fan subassembly from the supply 2 Use a screwdriver to unscrew the fuse cap Fuse cap Voltage selector switch 3 Remove the blown fuse from the fuse cap 4 Insert the new fuse in the fuse cap an...

Страница 162: ...kwise and open the two quick release locks on the front of the fan subassembly Fan 1 Fan 2 Fan 3 LEDs F 1 Fan 1 F 2 Fan 2 F 3 Fan 3 Quick release locks Reset button Base 2 Grasp the base with both hands press it down slightly and pull it fully out of the fan subassembly 3 Release the fan to be replaced by pressing the fan grip away from the housing with your thumb Fan Base Fangrip 4 Pull out the f...

Страница 163: ...01 5 Slide the new fan in until it engages 6 Slide the base in again and press it up 7 Use a screwdriver to make a quarter turn clockwise and close the two quick release locks 8 Use a pointed object to press the RESET button The fault LED will go off and the fan will start running ...

Страница 164: ...ed either in the bottom of the base or at its rear edge with snap hinges and snap catches The individual filter mats are joined with the filter frame Remove the filter frame as follows The filter frame is fitted in the bottom of the base Near the snap catches press against the filter frame from below and remove the filter frame The filter frame is secured at the rear edge of the base With the flat...

Страница 165: ...ge it with the snap catches Fitting the filter frame at the rear edge of the base At about a right angle to the base insert the filter frame in the snap hinges at the rear edge of the base 5 Slide the base in again and press it up 6 Use a screwdriver to make a quarter turn clockwise and close the two quick release locks 7 Replacing the filter frame will not trigger an interrupt There is therefore ...

Страница 166: ...f the printed circuit boards PCBs Fan 1 Fan 2 Fan 3 Power supply PCB Monitoring PCB Quick release lock Quick release lock Reset button 4 Pull the faulty PCB forward and out of the fan subassembly 5 Slide the new PCB in until it engages 6 Slide the base in again and press it up 7 Use a screwdriver to make a quarter turn clockwise and close the two quick release locks 8 Connect the power cable of th...

Страница 167: ...ation submodules in an H system Never insert or remove the interface submodules while power is being supplied exception synchronization submodules Always switch off the power supply before inserting or removing interface submodules Caution Danger of damage to persons and property Interface submodules contain electronically sensitive components that may be damaged if they are touched The surface te...

Страница 168: ...e sub D connector and remove all connectors 4 Loosen the two captive slot head screws which secure the front plate of the interface submodule to the left frame of the card slot so that the screws can be removed by 6 mm 5 Carefully remove the interface submodule from the guide support of the card slot see figure 7 1 Hold the interface module on the long sides of the front plate Guide rails Figure 7...

Страница 169: ... A 3 Installation of Programmable Controllers for EMC A 9 A 4 Examples of EMC Compatible Assembly A 10 A 5 Shielding Cables A 13 A 6 Equipotential Bonding A 15 A 7 Cabling Inside Buildings A 17 A 8 Cabling Outside Buildings A 19 A 9 Lightning Protection und Overvoltage Protection A 20 A 10 How to Protect Digital Output Modules against Inductive Surge A 30 A 11 Safety of Electronic Control Equipmen...

Страница 170: ...GENCY OFF devices complying with IEC 60204 1 which corresponds to VDE 0113 1 must remain effective in all operating modes of the plant or system Reactions of the Plant after Certain Events The following table shows how you must respond to the reactions of a plant to certain events Event Requirement Failure of the operating or supply voltage of the S7 400 Hazardous operating states must not occur T...

Страница 171: ...ble for the total discharge currents of the power supply module 24 VDC Supply The following table shows the points you must observe when connecting the S7 400 to a 24 VDC supply With You Must Ensure buildings that suitable external lightning protection measures are provided 24 VDC supply cables and signal lines that suitable internal and external lightning protection measures are provided 24 V sup...

Страница 172: ...ainst by Means of inadvertent actuation of operator controls a suitable arrangement or covering of keyboard and operator controls or a recessed arrangement of operator controls splashing and surging water suitable protective devices or installation in waterproof housings direct solar radiation suitable shading or installation in appropriately sheltered locations mechanical damage suitable demarcat...

Страница 173: ...ents you should carry out EMC planning before installing your control system taking possible interference sources into account and incorporating them in your observations Possible Effects of Interference Electromagnetic interference can affect the programmable controller in different ways Electromagnetic fields which directly affect the system Interference picked up via bus signals PROFIBUS DP etc...

Страница 174: ...tween conductors which are at different potentials The degree of coupling is proportional to the voltage variation as a function of time Interference pickup via parallel signal cables Static discharge of the operator Contactors Inductive Coupling Inductive or magnetic coupling occurs between two conductor loops through which current is flowing Interference voltages are induced by the magnetic flux...

Страница 175: ...per routing of lines when wiring see Sections A 7 and A 8 Arrange the cabling in line groups AC power cables power supply cables signal lines data lines Always install AC power cables and signal or data lines in separate ducts or bunches Route the signal and data lines as closely as possible to grounded surfaces such as cabinet elements metal bars and cabinet panels Rule 3 Secure Cable Shields Ens...

Страница 176: ...ce potential ground all electrical apparatus if possible see Sections 4 10 and 4 12 Install equipotential bonding conductors of sufficient rating when potential differences exist or are expected between sections of your system Use specific grounding measures Grounding the control system is a protective and functional measure Connect the system sections and cabinets containing central racks and exp...

Страница 177: ...terconnection between all inactive parts The entirety of all interconnected inactive parts is known as the chassis ground Even in the event of a fault the chassis ground must not develop a dangerous touch potential It must therefore be connected to the protective ground conductor via an adequate conductor cross section To prevent ground loops locally separated ground elements such as cabinets stru...

Страница 178: ...ammable controllers for EMC Example 1 Cabinet Configuration for EMC Figure A 2 shows a cabinet installation in which the measures described above grounding of inactive metal parts and connection of cable shields have been applied However this example only applies to grounded operation Observe the points marked in the figure when installing your system 1 2 4 5 6 7 8 3 Figure A 2 Example of Cabinet ...

Страница 179: ... bars metal to metal connection The cable shields are connected to the shield bus 7 Protective ground bar Provide a large area connection between the protec tive ground bar and supporting bars metal to metal connection Connect the protective ground bar to the protective conductor system via a separate con ductor minimum cross section 10 mm2 8 Conductor to the protective conductor system grounding ...

Страница 180: ...cial contact washers with painted and anodized metal parts or remove the insulating protective layers Provide large area low impedance metal to metal connections when securing the shield protective ground bar Cover the AC supply conductors in a shockproof arrangement Figure A 3 shows an example of wall mounting for EMC Figure A 3 Wall Mounting an S7 400 for EMC ...

Страница 181: ...ld to the chassis ground that is at the beginning and end of the cable Grounding the shields at both ends is essential to achieve a good degA 19A 19A 19A 19ree of suppression of interference in the higher frequency region In exceptional cases you can connect only one end of the shield to the chassis ground for example at the beginning or end of the cable However you only achieve attenuation of low...

Страница 182: ... large area and provide good contact Connect the shield to a shield bus immediately after entry of the cable into the cabinet Route the shield to the module but do not connect it there again to the chassis ground or the shield bus For installation other than in cabinets for example wall mounting you can provide contact between the cable shields and the cable duct Shown in the figure A 4 are some m...

Страница 183: ...re that the electronic components used function correctly Observe the following points for installing an equipotential bonding conductor The lower the impedance of the equipotential bonding conductor the higher the efficiency of the equipotential bonding Where two sections of an installation are interconnected via shielded signal lines whose shields are connected to the ground protective conductor...

Страница 184: ...Assembling and Installing Systems A 16 Automation System S7 400 Hardware and Installation A5E00850741 01 Figure A 5 Routing Equipotential Bonding Conductor and Signal Line ...

Страница 185: ...es for Run LAN signals shielded SINEC L1 PROFIBUS DP 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 LAN signals shielded SINEC L1 PROFIBUS DP Data signals shielded programming devices operator panels printers counter inputs etc An...

Страница 186: ...e cabinets in separate bundles or cable ducts no minimum clearance necessary Outside cabinets on separate cable racks with a clearance of at least 10 cm 3 93 in DC and AC voltages 400 V unshielded LAN signals shielded SINEC L1 PROFIBUS DP Data signals shielded programming devices operator panels printers counter inputs etc Analog signals shielded DC voltage 60 V unshielded Process signals 25 V shi...

Страница 187: ...ate equipotential bonding between the various items of equipment connected Take the necessary internal and external lightning protection and grounding measures applying to your particular application see below Rules for Lightning Protection Outside Buildings Lay your cables either In metallic conduits grounded at both ends or In concrete cable ducts with continuous end to end armoring Overvoltage ...

Страница 188: ... will find rules for the transitions between the individual lightning protection zones Note This section can only provide information on the protection of a programmable logic controller against overvoltages However a complete protection against overvoltage is guaranteed only if the whole surrounding building is designed to provide protection against overvoltages This refers especially to construc...

Страница 189: ...on zones are constituted by the following measures The external lightning protection of the building field side Lightning protection zone 0 The shielding of buildings Lightning protection zone 1 The shielding of rooms Lightning protection zone 2 The shielding of devices Lightning protection zone 3 Effects of a Lightning Strike Direct lightning strikes occur in lightning protection zone 0 The light...

Страница 190: ...Protection Equipotential Bonding Local Equipotential Bonding Internal Cable Metal Galvanic Connection Protection Zone 2 Figure A 6 Lightning Protection Zones of a Building Principle of Transitions between the Lightning Protection Zones At the transition points between the lightning protection zones you must take measures to prevent surges being conducted further The lightning protection zone conce...

Страница 191: ...ng cables Additional Measures If you cannot take the measures listed above you must install a high voltage protector at transition 0 1 with a relevant lightning conductor Table A 3 contains the components you can use for high voltage protection of your plant Table A 3 High Voltage Protection of Cables with the Help of Surge Protection Equipment Ser No Cables for equip transition point 0 1 with Ord...

Страница 192: ...or type A D 24 V 918 402 3 MPI bus cable RS 485 RS 232 V 24 1 piece of Blitzductor CT lightning conductor type B 919 506 and 919 510 4 Inputs outputs of digital modules 24 V DEHNrail 24 FML 901 104 5 24 VDC power supply module 1 piece of Blitzductor VT lightning conductor type AD 24 V 918 402 900 111 5SD7 032 6 Inputs outputs of digital modules and 120 230 VAC power supply 2 pieces of DEHNbloc 1 l...

Страница 193: ...protection zone transitions 1 2 and greater and for all cables that run within a lightning protection zone and are longer than 100 m Lightning Protection Element for the 24 VDC Supply You should only use the lightning conductor KT type 24 VAD SIMATIC for the 24 VDC power supply of the S7 400 All other surge protection components do not meet the required tolerance range of 20 4 V to 28 8 V of the S...

Страница 194: ...of DEHNguard 275 surge arresters 900 600 5SD7 030 AC TT system 1 piece of DEHNguard 275 surge arresters phase L to N 900 600 5SD7 030 1 piece of DEHNgap C N PE surge arrester N to PE 900 131 2 24 VDC Power Supply 1 piece of Blitzductor VT lightning conductor type AD 24 V 918 402 3 Bus cable MPI RS 485 Blitzductor CT surge arrester type MD HF 919 506 and 919 570 RS 232 V 24 1 piece of per conductor...

Страница 195: ...030 AC TN C system 1 piece of DEHNguard 275 surge arresters 900 600 5SD7 030 AC TT system 1 piece of DEHNguard 275 surge arresters phase L to N 900 600 5SD7 030 1 piece of DEHNgap C N PE surge N to PE 900 131 2 24 VDC Power Supply 1 piece of Blitzductor VT lightning conductor type AD 24 V 918 402 3 Bus cable MPI RS 485 Blitzductor CT surge arrester type MD HF 919 506 and 919 570 RS 232 V 24 1 piec...

Страница 196: ...it The sample in the figure A 7 shows you how install an effective surge protection for 2 networked S7 400 PLCs CPU SV 10 mm2 PE Switchgear cubicle1 L1L2L3NPE Lightning protection 0 field side zone Lightning protection zone 1 Lightning protection zone 2 SM MPI CPU SV 10 mm2 PE Switchgear cubicle 2 SM MPI Lightning protection zone 2 Figure A 7 Sample Circuitry for Networked S7 400 PLCs ...

Страница 197: ...Surge arrestor Blitzductor CT type MD HF order number 919 506 and 919 570 Low voltage surge protection for RS 485 interfaces at transition 1 2 4 Digital input modules FDK 2 D 60 V order number 919 993 Digital output modules FDK 2 D 5 24 V order number 919 991 Analog modules MD 12 V Blitzductor CT order number 919 506 and 919 541 Low voltage surge protection signal mo dules I O at transition 1 2 5 ...

Страница 198: ... Additional Overvoltage Protection Inductive 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 Consult the supplier of the inductors for the ratings of surge suppression devices Example Figure A 8 shows an output cir...

Страница 199: ...e High turn off delay 6 to 9 times higher than without suppressor circuits The Zener diode switches off more quickly than a diode circuit Suppression with AC Operated Coils AC operated coils are suppressed with varistors or RC elements With varistor With RC element Figure A 10 Suppression with AC Operated Coils Suppression with a varistor exhibits the following characteristics The amplitude of the...

Страница 200: ...l compoments using on line tests watchdog for the CPU etc These measures are referred to in safety technology as basic measures They prevent or rectify a large proportion of possible faults Risks A higher degree of safety standard applies to all applications and situations where there is a risk of material damage or injury upon the event of a failure Special system specific regulations are applied...

Страница 201: ...are common in practical situations For control equipment with few safety related functions e g machine controls The conventional PLC is responsible for machine control whereas safety related functions are implemented with a fail safe PLC For controllers with balanced areas e g chemical installations cable cars In this case also the area that is not safety relevant is controlled with a standard PLC...

Страница 202: ...Note that the braided shield of the coaxial cable serves as the return conductor and must not be connected to the shield bus The monitor and communications processor CP are interconnected without additional shielding and grounding Operation under Industrial Conditions Where the monitor and programmable controller are operated under harsh industrial conditions or there is a great distance between m...

Страница 203: ... busbars and the frame or cabinet wall Connect the shielding busbar to the central grounding point of the cabinet On the side of the monitor Isolate electronic ground and chassis ground from each other Proceed as follows Remove the jumper on the monitor to separate the two potentials Install a contact protection on the video sockets because with isolated grounding a shock hazard voltage of more th...

Страница 204: ...e A 11 shows a schematic view of the shielding and grounding for your monitor and S7 400 CR CP Shielding busbar Outer shield connected to ground clamp Monitor with isolated electronic ground and chassis ground Figure A 11 Shielding and Grounding with a Great Distance between Monitor and Programmable Controller ...

Страница 205: ...E00850741 01 Guidelines for Handling Electrostatically Sensitive Devices ESD Chapter Overview Section You will find Page B 1 What is ESD B 2 B 2 Electrostatic Charging of Persons B 3 B 3 General Protective Measures Against Electrostatic Discharge Damage B 4 B ...

Страница 206: ...Sensitive Devices are commonly referred to by the abbreviation ESD Electrostatically sensitive devices are labeled with the following symbol Caution Electrostatically sensitive devices are subject to voltages that are far below the voltage values that can still be perceived by human beings These voltages are present if you touch a component or the electrical connections of a module without previou...

Страница 207: ... charge Figure B 1 shows you the maximum values for electrostatic voltages which can build up on a person coming into contact with the materials indicated in the figure These values are in conformity with the specifications of IEC 61000 4 2 Voltage in kV 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 kV 5 10 20 30 40 50 60 70 80 90 100 Relative air humidity in 1 3 1 Synthetic material 2 Wool 3 Antistatic ...

Страница 208: ...ectrostatically sensitive devices You thus avoid electrostatic charging Avoid Direct Contact You should touch electrostatically sensitive devices only if it is unavoidable for example during maintenance work Hold modules without touching the pins of components or printed conductors In this way the discharged energy cannot affect the sensitive devices If you have to carry out measurements on a modu...

Страница 209: ...a power failure and that defined data areas bit memory timers and counters are also retained Bit Memory M A memory area in the system memory of a SIMATIC CPU This area can be accessed using write or read access bit byte word and double word The bit memory area can be used by the user to store intermediate results It can be accessed bit by bit byte by byte word by word or double word by double word...

Страница 210: ... data in memory Communications Processor Communications processors are modules for point to point and bus connections Compress The PG online function Compress is used to shift all valid blocks in the RAM of the CPU evenly and without any gaps to the beginning of the user memory All gaps caused by deleting or correcting blocks are thus removed Configuration The configuration is the selection and pu...

Страница 211: ...nding organization block is then executed D Data Block DB Data blocks are areas in the user program which contain user data There are shared data blocks which can be accessed by all logic blocks and there are instance data blocks which are associated with a particular function block FB call Data Static Static data are data which are used only within a function block These data are stored in an ins...

Страница 212: ...e CPU via PROFIBUS DP DPV1 Enhancement of distributed I O to EN 50170 The results were incorporated into IEC 61158 IEC 61784 1 2002 Ed1 CP 3 1 The term DPV1 is used in the SIMATIC documentation The new version contains enhanced and simplified functionality for example the extension of acyclic services with new interrupt functions The DPV1 functionality is integrated into IEC 61158 EN 50170 Volume ...

Страница 213: ...g of an organization block where the user can program a response or displaying of the error F FB Function Block FC Function FORCE Function which can be used to assign fixed values to specific tags in a user program or CPU also I Os so that the user program is not able to change or overwrite these values The function allows users to set defined tag values in the user program for use in specific sit...

Страница 214: ...ble for programming complex functions e g closed loop controls mode selections which are repeated frequently Function Module FM A programmable module which in contrast to the CPU has no multipoint interface and can only be operated as a slave G Global Data Communication Global data communication is a procedure with which shared data are transferred between CPUs Ground The conductive mass of the gr...

Страница 215: ...th the S7 400 each call of a function block in the STEP 7 user program is assigned a data block which is generated automatically In the instance data block the values of the input output and in out parameters as well as the local block data are stored Interface Multipoint Multipoint Interface Interrupt Cyclic Cyclic Interrupt Isolated In the case of isolated I O modules the reference potentials of...

Страница 216: ...ontains part of the STEP 7 user program The other type of block is a data block which contains only data M Manufacturer specific interrupt Can be generated by a DPV1 slave The DPV1 master responds with a call of OB57 For detailed information on OB57 refer to the System Software for S7 300 S7 400 System and Standard Functions reference manual Measuring Range Submodule Measuring range submodules are...

Страница 217: ...e nesting depth is the number of simultaneously called logic blocks Network In communications a network is the connection between two or more S7 400 CPUs and other terminals such as a programming device via a connecting cable Data are exchanged over the network between the connected stations Node Number The node number represents the accessing address of a CPU or programming device or of another i...

Страница 218: ... the following operating states STOP STARTUP RUN Operating System of the CPU The operating system of the CPU organizes all functions and sequences of the CPU which are not connected to a specific control task Organization Block OB Organization blocks form the interface between the operating system of the S7 400 CPU and the user program The sequence in which the user program should be processed is ...

Страница 219: ...OBs These classes determine which OB can interrupt other OBs Several OBs belonging to the same priority class do not interrupt each other and are executed in sequential order Process Image The process image is a component part of the system memory of the S7 400 CPU At the beginning of the cyclic program the signal states of the input modules are transferred to the process image input table PII At ...

Страница 220: ... lost after a power failure if a backup battery is provided Release version Used to distinguish products with the same order number Incremented with each up compatible functional enhancement manufacturing specific change use of new parts components and for bugfixes Run Time Error Errors that occur in the programmable controller that is not in the process during execution of the user program S Scan...

Страница 221: ... be set using the mode selector on the CPU following power on or by an operation on the programming device Status interrupt Can be generated by a DPV1 slave The DPV1 master responds with a call of OB55 For detailed information on OB57 refer to the System Software for S7 300 S7 400 System and Standard Functions reference manual STEP 7 Programming language for writing user programs for SIMATIC S7 pr...

Страница 222: ...e as SFCs You need to create instance DBs for these blocks and load them into the CPU as part of the user program System Memory The system memory is integrated in the CPU and executed in the form of RAM The address areas timers counters bit memory etc and data areas required internally by the operating system for example backup for communication are stored in the system memory T Terminating resist...

Страница 223: ...e interrupt An update inbterrupt can be generated by a DPV1 slave The DPV1 responds with a call of OB56 For detailed information on OB56 refer to the System Software for S7 300 S7 400 System and Standard Functions reference manual User Memory The user memory contains logic blocks and data blocks of the user program The user memory can either be intergrated in the CPU or can be plugged in on memory...

Страница 224: ... timers counters flags DBs are retained The process image input table is read in and the STEP 7 user program processed starting at the last breakpoint STOP power failure Watchdog interrupt Generated cyclically within a configurable time pattern by the S7 400 CPU Triggers the execution of a corresponding OB Starting point of the clock cycle is the operational transition from STOP to RUN Work Memory...

Страница 225: ...fuse digital modules 7 9 Channel on a digital module 3 6 on an analog module 3 7 Communication programming device CPU 6 6 Communication bus C bus 2 7 Components for MPI network 5 8 of the S7 400 1 1 PROFIBUS DP network 5 8 Configuration electrical A 2 interference free 4 15 Connecting a programming device 6 5 Connection rules 2 5 Coupling capacitive A 6 direct A 6 inductive A 6 CPU 1 2 resetting t...

Страница 226: ...oad current circuit 4 5 Load current power supplies 4 4 Location M7 400 module designation 1 3 order number 1 3 product release 1 3 M Main power supply A 3 Memory card inserting 6 11 6 12 Methods of ventilation 2 18 Modules installing 2 30 isolated 4 10 signal 2 7 slot numbers 2 33 MPI definition 5 2 MPI address 5 4 highest 5 4 rules 5 5 MPI addresses recommendation 5 8 MPI network components 5 8 ...

Страница 227: ...g the PROFIBUS DP bus cable 5 21 terminating resistor 5 9 wiring the power supply unit 5 21 Rules for configuring a network 5 7 for ensuring electromagnetic compatibility A 7 general A 2 wiring 4 17 Running cables outside buildings A 19 S Segment 5 3 MPI network 5 15 PROFIBUS DP network 5 15 Signal module 1 2 Space requirements of cabinets 2 28 of the racks 2 29 with fan subassembly 2 11 Spur line...

Страница 228: ...Index Index 4 Automation System S7 400 Hardware and Installation A5E00850741 01 ...

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