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Manual VIPA System 300S SPEED7 

Chapter 5   Communication protocols

 

HB140E - CP - RE_341-2CH71 - Rev. 09/46 

5-1 

Chapter 5  

Communication protocols 

 

In this chapter the communication protocols are described, which are 
supported by the CP.  
Here you may find the protocol specific parameters and if necessary the 
functionality of the corresponding protocol. 

 

 

Topic     

Seite 

Chapter 5

 

Communication protocols.............................................. 5-1

 

Overview .............................................................................................. 5-2

 

ASCII.................................................................................................... 5-3

 

STX/ETX .............................................................................................. 5-6

 

 

 

 

Overview 

Content 

Summary of Contents for CP 341S

Page 1: ...VIPA System 300S SPEED7 CP 341 2CH71 Manual HB140E_CP RE_341 2CH71 Rev 09 46 November 2009 ...

Page 2: ...ic Compatibility Directive 2006 95 EC Low Voltage Directive Conformity is indicated by the CE marking affixed to the product Conformity Information For more information regarding CE marking and Declaration of Conformity DoC please contact your local VIPA customer service organization Trademarks VIPA SLIO System 100V System 200V System 300V System 300S System 400V System 500S and Commander Compact ...

Page 3: ...sions 2 3 Installation Standard Bus 2 4 Assembly SPEED Bus 2 5 Cabling 2 8 Installation Guidelines 2 12 Chapter 3 Hardware description 3 1 Properties 3 2 Structure 3 3 Technical data 3 7 Chapter 4 Deployment 4 1 Fast introduction 4 2 Hardware configuration 4 4 Communication with the user program 4 8 Firmware update 4 13 Chapter 5 Communication protocols 5 1 Overview 5 2 ASCII 5 3 STX ETX 5 6 Chapt...

Page 4: ...Contents Manual VIPA System 300S SPEED7 ii HB140E CP RE_341 2CH71 Rev 09 46 ...

Page 5: ...e components of the CP 341S are more described The technical data are to be found at the end of the chapter Chapter 4 Deployment Contents of this chapter is the hardware configuration and the parameterization of the CP In addition the communication between CPU and CP 341S by means of function blocks is described Chapter 5 Communication protocols In this chapter the communication protocols are desc...

Page 6: ...very chapter provides a self contained description of a specific topic The following guides are available in the manual an overall table of contents at the beginning of the manual an overview of the topics for every chapter an index at the end of the manual The manual is available in printed form on paper in electronic form as PDF file Adobe Acrobat Reader Important passages in the text are highli...

Page 7: ...ments EX zone The manual must be available to all personnel in the project design department installation department commissioning operation The following conditions must be met before using or commissioning the components described in this manual Modification to the process control system should only be carried out when the system has been disconnected from power Installation and modifications on...

Page 8: ...Safety information Manual VIPA System 300S SPEED7 4 HB140E CP RE_341 2CH71 Rev 09 46 ...

Page 9: ...ntain hints for the usage and information about a SPEED7 system from VIPA General information about the System 300S like dimensions and environment conditions will also be found Topic Page Chapter 1 Basics 1 1 Safety Information for Users 1 2 General description of the System 300 1 3 System 300S 1 4 Overview Content ...

Page 10: ... components thereby causing the module to become inoperable or unusable Modules that have been damaged by electrostatic discharges can fail after a temperature change mechanical shock or changes in the electrical load Only the consequent implementation of protection devices and meticulous attention to the applicable rules and regulations for handling the respective equipment can prevent failures o...

Page 11: ...alized The single modules of the System 300V from VIPA are similar in construction to Siemens Due to the compatible backplane bus the modules from VIPA and Siemens can be mixed System 300S The System 300S extends the central area with high speed CPUs that have the integrated SPEED7 chip Additionally some CPU s have got a parallel SPEED Bus that allows the modular connection of fast peripheral modu...

Page 12: ...or at the left side of the CPU Standard bus serial SPEED Bus parallel The System 300S series consists of a number of CPUs These are programmed in STEP 7 from Siemens For this you may use WinPLC7 from VIPA or the Siemens SIMATIC manager CPUs with integrated Ethernet interfaces or additional serial interfaces simplify the integration of the CPU into an existing network or the connection of additiona...

Page 13: ...sor for Ethernet Fast CP 341 with double RS 422 485 interface Fast digital input output modules Fast Digital IN OUT Every CPU 31xS has an integrated work memory During program run the total memory is divided into 50 for program code and 50 for data Starting with CPU firmware 3 0 0 there is the possibility to extend the total memory to its maximum by means of a MCC memory extension card The CPUs of...

Page 14: ...patible to the programming language STEP 7 from Siemens and may be programmed via WinPLC7 from VIPA or via the Siemens SIMATIC manager Here the instruction set of the S7 400 from Siemens is used Note Please do always use the CPU 318 2DP 6ES7 318 2AJ00 0AB0 V3 0 from Siemens of the hardware catalog to project a SPEED7 CPU with SPEED Bus from VIPA For the project engineering a thorough knowledge of ...

Page 15: ...In this chapter you will find all information required for the installation and the cabling of a process control with the components of the System 300 Topic Page Chapter 2 Assembly and installation guidelines 2 1 Overview 2 2 Installation dimensions 2 3 Installation Standard Bus 2 4 Assembly SPEED Bus 2 5 Cabling 2 8 Installation Guidelines 2 12 Overview Content ...

Page 16: ...backplane bus coupler to the module from the backside The backplane bus coupler is included in the delivery of the peripheral modules With SPEED Bus the bus connection happens via a SPEED Bus rail integrated in the profile rail at the left side of the CPU Due to the parallel SPEED Bus not all slots must be occupied in sequence At SLOT 1 DCDC you may plug either a SPEED Bus module or an additional ...

Page 17: ... Assembly and installation guidelines HB140E CP RE_341 2CH71 Rev 09 46 2 3 Installation dimensions 1tier width WxHxD in mm 40 x 125 x 120 65mm 40mm 122 mm 125 mm 125mm 120mm 175mm Dimensions Basic enclosure Dimensions Installation dimensions ...

Page 18: ...section of the cable to the protected earth conductor has to be 10mm 2 Stick the power supply to the profile rail and pull it to the left side up to 5mm to the grounding bolt of the profile rail Take a bus coupler and click it at the CPU from behind like shown in the picture Stick the CPU to the profile rail right from the power supply and pull it to the power supply Click the CPU downwards and bo...

Page 19: ...imum 65mm space above and 40mm below the profile rail Please look for a low impedance connection between profile rail and background Connect the profile rail with the protected earth conductor The minimum cross section of the cable to the protected earth conductor has to be 10mm 2 Order number SPEED Bus slots A B C VIPA 390 1AB60 160mm 140mm 10mm VIPA 390 1AE80 482mm 466mm 8 3mm VIPA 390 1AF30 530...

Page 20: ... push it to the left to the isolation bolt of the profile rail Fix the power supply by screwing SLOT1 DCDC CPU SLOT2 To connect the SPEED Bus modules plug it between the triangular positioning helps to a plug in location marked with SLOT and pull it down Only the SLOT1 DCDC allows you to plug in either a SPEED Bus module or an additional power supply Fix the modules by screwing SLOT1 DCDC CPU SLOT...

Page 21: ...wn Fix the CPU by screwing SLOT1 DCDC CPU SLOT2 Repeat this procedure with the peripheral modules by clicking a backplane bus coupler stick the module right from the modules you ve already fixed click it downwards and connect it with the backplane bus coupler of the last module and bolt it Danger Before installing or overhauling the System 300V the power supplies must be disconnected from voltage ...

Page 22: ...us couplers and parts of the CPU gray connectors with CageClamp technology are used You may connect wires with a cross section of 0 08mm 2 to 2 5mm2 You can use flexible wires without end case as well as stiff wires 1 2 1 Rectangular opening for screwdriver 2 Round opening for wires 1 2 3 The picture on the left side shows the cabling step by step from top view To conduct a wire you plug a fitting...

Page 23: ...und opening for wires 1 2 3 The picture on the left side shows the cabling step by step from top view For cabling you push the locking vertical to the inside with a suiting screwdriver and hold the screwdriver in this position Insert the insulation striped wire into the round opening You may use wires with a cross section from 0 08mm2 to 2 5mm2 By removing the screwdriver the wire is connected saf...

Page 24: ... front connector on the module until it locks In this position the front connector juts out of the module and has no contact yet Strip the insulation of your wires If needed use core end cases Thread the included cable binder into the front connector If you want to lead out your cables from the bottom of the module start with the cabling from bottom to top res from top to bottom if the cables shou...

Page 25: ...A 392 1AM00 Push the release key at the front connector on the upper side of the module and at the same time push the front connector into the module until it locks Bolt the fixing screw of the front connector Now the front connector is electrically connected with your module Close the front flap Fill out the labeling strip to mark the single channels and push the strip into the front flap ...

Page 26: ... res without interferencing the environment All System 300 components are developed for the deployment in hard industrial environments and fulfill high demands on the EMC Nevertheless you should project an EMC planning before installing the components and take conceivable interference causes into account Electromagnetic interferences may interfere your control via different ways Fields I O signal ...

Page 27: ...isolated Analog lines must be laid isolated When transmitting signals with small amplitudes the one sided lying of the isolation may be favorable Lay the line isolation extensively on an isolation protected earth con ductor rail directly after the cabinet entry and fix the isolation with cable clamps Make sure that the isolation protected earth conductor rail is connected impedance low with the ca...

Page 28: ...ay the isolation one sided Then you only achieve the absorption of the lower frequencies A one sided isolation connection may be convenient if the conduction of a potential compensating line is not possible analog signals some mV res µA are transferred foil isolations static isolations are used With data lines always use metallic or metalized plugs for serial couplings Fix the isolation of the dat...

Page 29: ...H71 Rev 09 46 3 1 Chapter 3 Hardware description Here the hardware components of the CP 341 are more described The technical data are to be found at the end of the chapter Topic Page Chapter 3 Hardware description 3 1 Properties 3 2 Structure 3 3 Technical data 3 7 Overview Content ...

Page 30: ...eive and send buffer Baud rate parameterizable up to 115 2kbit s Integrated diagnostics buffer each CP Power supply via back plane bus SF S F1 S F2 S F3 S F4 S F5 S F6 S F7 S F8 VIPA 331 7KF00 AI 8x12Bit X 2 3 4 SM331 VIPA 341 2CH71 CP341S 2RS422 485 X 2 3 4 RUN INTF EXTF1 FAULT1 TxD1 RxD1 EXTF2 FAULT2 TxD2 RxD2 COM1 COM2 Type Order number Description CP 341S 2RS422 485 VIPA 341 2CH71 CP 341 with ...

Page 31: ...LEDs Name Color Description RUN green Blinks at start up and firmware update On at ready for communication INTF red On at an internal error of the module If this error just exists after PowerON please contact the VIPA hotline EXTF1 red On while wire break at COM1 FAULT1 red On if COM1 is without parameters Blinks if COM1 has wrong parameters Flickers on parity error or character frame error at COM...

Page 32: ...s connection Full duplex Four wire operation RS422 Half duplex Two wire operation RS485 Data transfer rate up to 115 2kbit s 9pin D type jack Pin Designation Input Output Signal description 1 n c 2 T B Output Send data four wire 3 R B R B T B Input Input Output Receive data four wire Receive Send data two wire 4 RTS Output Request to send RTS ON CP ready to send RTS OFF CP is not sending 5 M5V GND...

Page 33: ...inimum Shield CP 341 RS485 Periphery GND_ISO 5V_ISO 5 6 7 2 8 3 Send Receive R A R B T A T B 1 GND_ISO 5V_ISO Shield 1 Send Receive 1 In the case of cables 50m you have to solder in a terminating resistor of approx 330Ω on the receiver for data free traffic Shield CP 341 RS422 Periphery GND_ISO 5V_ISO 5 6 7 2 8 3 Send Receive R A R B T A T B 1 GND_ISO 5V_ISO Shield 1 Send Receive R A R B T A T B 1...

Page 34: ...iption Wiring of the receiver None No preassignment of the receiving lines This setting only makes sense with bus capable special drivers R B R A Signal R A 5Volt Break evaluation Signal R B 0Volt With this preassignment break detection is possible at full duplex operation RS422 0V 5V R B R A Signal R A 0Volt Signal R B 5Volt This preassignment corresponds to the idle state no sender is activated ...

Page 35: ...D at the front side Power dissipation of the module 3 75W Protocols ASCII STX ETX Plugs Interfaces COM1 COM2 double interface 9pin D type plug for RS422 485 Isolation to back plane bus Transfer distance 1200m at 19 2kbit s 500m at 38 4kbit s 250m at 76 8kbit s Baud rate max 115 2kbit s Interrupts Diagnostic interrupt no Diagnostic functions Read out diagnostic information yes Environment condition...

Page 36: ...Chapter 3 Hardware description Manual VIPA System 300S SPEED7 3 8 HB140E CP RE_341 2CH71 Rev 09 46 ...

Page 37: ...hapter is the hardware configuration and the parameterization of the CP In addition the communication between CPU and CP 341S by means of function blocks is described Topic Page Chapter 4 Deployment 4 1 Fast introduction 4 2 Hardware configuration 4 4 Communication with the user program 4 8 Firmware update 4 13 Overview Content ...

Page 38: ...SD file SPEEDBUS GSD from VIPA Install the SPEEDBUS GSD from VIPA For hardware configuration jump within your project to the hardware configurator of the Siemens SIMATIC manager Insert a profile rail Place the following Siemens CPU at slot 2 CPU 318 2DP 6ES7 318 2AJ00 0AB0 V3 0 and parameterize the CPU if necessary If there are modules at the standard bus right beside the CPU and parameterize the ...

Page 39: ... a cyclic call of these blocks data may be sent and received by the CP The conversion of the transfer protocols to the communication partner happens at the CP For each of these FBs an instance DB is necessary This is to be indicated at the call of the corresponding FB The data for communication are to be stored in each case in a send respectively receive DB To control the communication the FBs hav...

Page 40: ... the following language versions Further language versions are available on inquires Name Language SPEEDBUS GSD german default SPEEDBUS GSG german SPEEDBUS GSE english The GSD files may be found at the service area of www vipa de The integration of the SPEEDBUS GSD takes place with the following proceeding Browse to www vipa de Click to Service Downloads GSD files Download the file Cx000023_Vxxx E...

Page 41: ...le click on the according module If there are modules at the standard bus right beside the CPU these are configured with the following approach Include your System 300 modules at the standard bus in the plugged sequence starting with slot 4 Parameterize the modules where appropriate The parameter window opens by a double click on the according module Since as many as 32 modules may be addressed by...

Page 42: ... slot 0 of the slave system In this way place the SPEED Bus CP 341 2CH71 according to your protocol In the hardware catalog for each protocol at VIPA_SPEEDBUS a CP 341 2CH71 is available Standard bus serial SPEED Bus parallel CPU 31xS DI DO CP 341 DI DO DIO AI AO Module CPU 318 2 DP MPI DP DI DO DIO AI AO CP342 5 Standard bus Slot 1 2 X2 X1 3 4 5 6 7 8 9 AI DIO DP Mastersystem for SPEED Bus Module...

Page 43: ... 16byte The data of the COM2 interface are allocated with an offset of 16byte The corresponding address value is necessary for integration in the user program To access the COM2 interface you have to add 16 to the respective address value With the process image a consistent image of the process signal may be accessed during the program cycle If the field process image shows the entry then the set ...

Page 44: ... Execute the following steps Extract FX000011_Vxxx zip Retrieve the library Open library and transfer blocks into the project Start your un zip application with a double click on the file FX000011_Vxxx zip and copy the file vipa zip to your work directory It is not necessary to extract this file too To retrieve your library for the SPEED7 CPUs start the SIMATIC manager from Siemens Open the dialog...

Page 45: ... cyclically or statically by a timer driven program Information about the parameters which were necessary for the loadable protocols may be found at the corresponding protocol description in the chapter Communication protocols Parameter Declaration Data type Description EN_R Input BOOL Enables data read R Input BOOL Aborts request current request is aborted and receiving is blocked LADDR Input INT...

Page 46: ...d Significant time periods are the CPU cycle time the updating time on the CP and the response time of the communication partner The NDR output shows request completed without errors data accepted If there was an ERROR the corresponding event number is displayed in the STATUS If no error occurs the value of STATUS is 0 NDR and ERROR STATUS are also output in response to a RESET of the FB In the ev...

Page 47: ... Input INT Length of message frame to be sent in byte 1 LEN 1024 R_ Input These parameters are not relevant for ASCII and 3964 R But they may be used by loadable protocols DONE 1 Output BOOL Request complete without errors data sent Parameter STATUS 00h ERROR1 Output BOOL Request complete with error Parameter STATUS contains error details STATUS1 Output WORD Specification of the error on ERROR 1 1...

Page 48: ...rd the parameter DONE ERROR and STATUS are only available at one block call For further evaluation these should be copied to a free data area With LADDR the address of the corresponding CP is specified This is the address which was specified during hardware configuration by means of the properties of the respective interface of the CP To access the COM2 interface you have to add 16 to the respecti...

Page 49: ...t the version of the update firmware has to be different from the existing firmware otherwise no update is executed The CPU has an integrated website that monitors information about firmware version of the SPEED7 components The Ethernet PG OP channel provides the access to this web site To activate the PG OP channel you have to enter according IP parameters This can be made in Siemens SIMATIC mana...

Page 50: ... voltage supply 2 After a short boot up time the alternate blinking of the CPU LEDs SF and FRCE shows that at least a more current firmware file was found on the MMC 3 You start the transfer of the firmware to the CP as soon as you tip the RUN STOP lever downwards to MRES within 10s 4 During the update process the CP LEDs Rx Tx and RUN are on 5 The update is successful finished when the LEDs PWR S...

Page 51: ...ation protocols In this chapter the communication protocols are described which are supported by the CP Here you may find the protocol specific parameters and if necessary the functionality of the corresponding protocol Topic Seite Chapter 5 Communication protocols 5 1 Overview 5 2 ASCII 5 3 STX ETX 5 6 Overview Content ...

Page 52: ... be sent or received A simultaneous data exchange is only possible at full duplex operation Each character to be transferred is preceded by a synchronizing pulse as start bit The end of the transferred character is formed by the stop bit Beside the start and stop bit there are further parameterizable agreements between the communication partners necessary for serial data transfer This character fr...

Page 53: ...ity the inversion of one bit within a character may be secured If two or more bits of a character are inverted this error may no longer be detected For the deployment of the ASCII protocol you have to add to your master system a SPEED Bus slave and to configure a CP 341 2CH71 ASCII as described at Hardware configuration The properties dialog of the CP may be opened by a double click Every paramete...

Page 54: ...ters XON 11h and XOFF 13h Please remember that your data must not contain these control characters Range of values none hardware XON XOFF Default none The delay time that must expire before a command is executed The ZNA is to be specified in ms Range of values 0 65535 Default 0 The character delay time defines the maximum time that may expire between two characters of a single message during the r...

Page 55: ...re break recognition is not possible here R B R A 5V 0V Range of values none R A 5Volt R B 0Volt R A 0Volt R B 5Volt Default none Via the operating mode you may specify if the interface is operated in half RS485 or full duplex RS422 operation Note At half duplex parameterization with RS485 software data flow control is not possible Value Description full duplex Four wire operation RS422 Data is ex...

Page 56: ...tructure STX2 Z1 Z2 Zn ETX1 ETX2 ZVZ STX1 You may define up to 2 start and end characters It is also possible to specify a ZNA for the sending station For the deployment of the STX ETX protocol you have to add to your master system a SPEED Bus slave and to configure a CP 341 2CH71 STX ETX as described at Hardware configuration The properties dialog of the CP may be opened by a double click Every p...

Page 57: ...he flux control is deactivated hardware Hardware flux control employs the RTS and CTS lines and these must therefore be wired accordingly XON XOFF Software flux control employs the control characters XON 11h and XOFF 13h Please remember that your data must not contain these control characters Range of values none hardware XON XOFF Default none The delay time that must expire before a command is ex...

Page 58: ... 2 at Number of end flags Range of values 0 255 Default End flag 1 3 End flag 2 0 For a connection with minimum reflections and the break evaluation at RS422 485 operation the lines may be preset with defined static voltage levels At the CP interface the wiring of the receiver is realized as follows Value Description Wiring of the receiver None No preassignment of the receiving lines This setting ...

Page 59: ...Data is exchanged between the communication partners in both directions simultaneously In full duplex operation therefore data may be sent and received at the same time Each communication partner must be able to operate a send and a receive facility simultaneously half duplex Two wire operation RS485 Data is exchanged between the communication partners but only in one direction at a time In half d...

Page 60: ...Chapter 5 Communication protocols Manual VIPA System 300S SPEED7 5 10 HB140E CP RE_341 2CH71 Rev 09 46 ...

Page 61: ...tics and the error behavior of the CP is more described Each CP part has its own diganostics buffer for about 100 diagnostics entries and these are accessible as record sets The record set of the corresponding CP part may be accessed by means of the SFC 59 RD_REC Topic Seite Chapter 6 Diagnostics and error behavior 6 1 Accessing diagnostics messages 6 2 Diagnostic messages 6 5 Overview Content ...

Page 62: ...ccur The diagnostic buffer is a ring buffer for a maximum of 100 diagnostic entries When the diagnostic buffer is full the oldest entry is deleted when a new entry is recorded This means that the most recent entry is always the first The diagnostics buffer of the corresponding CP may be accessed by means of the handling block SFC 59 RD_REC Read record with the record set 80 for COM1 respectively r...

Page 63: ...TE I Q M D L constant Identifier for the address space Because of the identical addresses for inputs and outputs here 54h should be entered LADDR INPUT WORD I Q M D L constant Logical base address of the module RECNUM INPUT BYTE I Q M D L constant Record set number 80h Diagnostics data 80h 81h Diagnostics data 81h RET_VAL OUTPUT INT I Q M D L The return value contains an error code if an error is ...

Page 64: ...80A0h 80Bxh These errors cannot be corrected without intervention A repeat of the call to the SFC is only meaningful when the error has been removed Example for permanent errors incorrect length of the record that must be transferred 80B1h Value Description 7000h First call with REQ 0 data transfer not active BUSY is set to 0 7001h First call with REQ 1 data transfer initiated BUSY is set to 1 700...

Page 65: ...em EPROM of CP Remedy CP defective and must be replaced 01 02h RAM test of CP faulty Remedy CP defective and must be replaced 01 03h Request interface of CP defective Remedy CP defective and must be replaced 01 10h Fault in CP firmware Remedy Switch CP off and on again If necessary replace CP Event class 02h Initialization error 02 0Fh Invalid parameterization detected at start of parameterized co...

Page 66: ... repetition Remedy Reduce number of communication calls CPU data area temporarily unavailable for access for example because receive block is called too infrequently Remedy Call the receive block more frequently CPU data area temporarily unavailable for access for example because receive block is temporarily locked EN false Remedy Check whether the receive block is disabled for too long Event clas...

Page 67: ...orter requests Event class 07h Send error 07 08h The waiting time for XON respectively CTS ON has elapsed Remedy The communication partner has a fault is too slow or is switched off line Check the communication partner or if necessary change the parameterization Event class 08h Receive error 08 0Ah There is no free input buffer available Remedy The FB P_RCV_RK must be called more frequently 08 0Bh...

Page 68: ...ts Change your system setup or cable wiring 08 15h Discrepancy between settings for transfer attempts at CP a commu nication partner Remedy Parameterize same number of transfer attempts at communication partner as at CP Check for malfunction at partner device possible by using interface test device switched into the transmission line 08 16h The length of a received message frame was longer than th...

Page 69: ...EMC 2 12 Basic rules 2 13 Environmental conditions 1 6 F FB 7 P_RCV_RK 4 9 FB 8 P_SND_RK 4 11 Firmware Info by Web page 4 13 Update 4 13 G GSD file include 4 4 H Hardware description 3 1 I Installation 2 1 Installation guidelines 2 12 Interference influences 2 12 Isolation of conductors 2 14 O Overview System 300 1 3 P Parameters 4 7 pkg file 4 13 Power supply 1 6 3 4 Properties 3 2 R RS422 485 In...

Page 70: ...Index Manual VIPA System 300S SPEED7 A 2 HB140E CP RE_341 2CH71 Rev 09 46 M Stich ...

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