- Schneider Electric
Contents
1. Request Type of MEI ReadDeviceld Object Id CRC16 Slave no 2B 0E 01 00 Lo Hi 1 byte 1 byte 1 byte 1 byte 1 byte 2 bytes Response Type of MEI ReadDeviceld Degree of conformity Slave no 2B OF 01 02 1 byte 1 byte 1 byte 1 byte 1 byte Number of additional frames 00 Next object Id 00 Number of objects 04 1 byte 1 byte 1 byte Id of object no 1 Length of object no 1 Value of object no A jes D gt ee Dre lern 00 OD Telemecanique 1 byte 1 byte 13 bytes Id of object no 2 Length of object no 2 Value of object no 01 0B LMC20 1 byte 1 byte 11 bytes Id of object no 3 Length of object no 3 Value of object no 02 04 0201 1 byte 1 byte 4 bytes CRC16 Lo Hi 1 byte 1 byte The total response size given in this example equals 55 bytes The response contains the following three objects e Object no 1 e Object no 2 e Object no 3 Manufacturer name always Telemecanique i e 13 bytes Device reference ASCII string for example LMC20 i e 11 bytes The length of this object varies according to device type Use the Length of object no 2 field to determine the length Negative response specifically related to the Identification function Device version in MMmm format where MM represents the determinant and mm the s2. Slave 1 Slave n Type of trunk cable Shielded cable with 1 twisted pair and at least a 3rd conductor Maximum length of bus 1000 m at 19200 bps with the Telemecanique TSX CSA cable Maximum number of stations without repeater 32 stations i e 31 slaves Maximum length of tap links e 20 m 65 62 ft for one tap link 40 m 131 23 ft divided by the number of tap links on a multiple junction box Bus polarization One 450 to 650 Q pull up resistor to the 5 V 650 Qor thereabouts recommended One 450 to 650 Q pull down resistor to the Common 650 Q or thereabouts recommended This polarization is recommended for the master Line termination One 120 90 25 W resistor in series with a 1nF 10 V capacitor Common polarity Yes Common connected to the protective ground at one or more points on the bus Connection to the bus Connecting via RJ45 wiring system 1 Master PLC PC or communication module i 2 Modbus cable depending on the type of master see table page 11 3 Modbus splitter box LU9 GC3 2 3 4 6 4 65 4 Modbus drop cables VW3 A8 306 R m o d 5 Line terminators VW3 A8 306 RC a ech ee 6 T junction boxes VW3 A8 306 TF with cable N Bam a sm Ex gt 0 0 7 Modbus cable to another splitter box TSX CSA 00 Connection accessories Description No Reference Modbus splitter 10 RJ45 connectors and 1 screw terminal 3 LU9 GC3 box Modbus T junction bo
3. The data is transmitted in binary code CRC16 Cyclic redundancy check parameter The end of the frame is detected on a silence greater than or equal to 3 5 characters Principle The Modbus protocol is a master slave protocol Only one device can transmit on the line at any one time The master manages the exchanges and only it can take the initiative It interrogates each of the slaves in succession Master No slave can send a message unless it is invited to do so aay Em In the event of an error during data exchange the master repeats the question and declares i i the interrogated slave absent if no response is received within a given time period If a slave does not understand a message it sends an exception response to the master The master may or may not repeat the request Direct slave to slave communication is not possible For slave to slave communication the master application software must be designed accordingly to interrogate a slave and send back the data received to the other slave Two types of dialog are possible between master and slaves The master sends a request to a slave and waits for it to respond The master sends a request to all slaves without waiting for them to respond broadcasting principle Addresses The Modbus addresses of the Lexium Controller can be configured from 1 to 247 Address 0 coded in a request sent by the master is reserved for
4. to be connected using cable VW3 A8 306 D30 Subscriber socket 5 TSX SCA 62 2 female 15 way SUB D connectors 2 screw terminals and an RC line terminator to be connected using cable VW3 A8 306 or VW3 A8 306 D30 Connection cables Description Length m Connectors No Reference Cables for Modbus bus 3 1 RJ45 connector and one stripped end 7 VW3 A8 306 D30 3 1 RJ45 connector and 1 male 15 way SUB D connector for 6 VW3 A8 306 TSX SCA 62 RS 485 double shielded 100 Supplied without connector 3 TSX CSA 100 twisted pair cables 200 Supplied without connector 3 TSX CSA 200 500 Supplied without connector 3 TSX CSA 500 12 Connection to the bus Type of master Master interface Modbus connection accessories for junction boxes using screw terminals Description Reference Twido PLC Adaptor or screw terminal Modbus cable TSX CSA100 or RS485 interface module TSX CSA200 or TSX CSA500 TSX Micro PLC Mini DIN RS485 Junction box TSX P ACC 01 connector port PCMCIA card TSX SCP114 Cable equipped with a special connector and stripped at the other end TSX SCP CU 4030 TSX Premium PLC TSX SCY 11601 or TSX SCY 21601 module 25 way SUB D socket Cable equipped with a 25 way SUB D connector and stripped at the other end TSX SCY CM 6030 PCMCIA card TSX SCP114 Cable equipped with a special connector and stripped at the other end TSX SCP CU 4030 Ethernet bridge Screw terminal RS485 Mod
5. 25 connector PC with serial port PC with male 9 way SUB D RS232 serial port 13 Connection to the bus Connecting on screw terminals Connection accessories Description Reference Line For screw terminals R 150 Q VW3 A8 306 DR terminators Connection cables Description Length m Connectors Reference Cables for 3 1 RJ45 connector and one stripped end VW3 A8 306 D30 Modbus bus RS 485 double shielded 100 Supplied without connector TSX CSA 100 twisted pair cables 200 Supplied without connector TSX CSA 200 500 Supplied without connector TSX CSA 500 14 Configuration Configuring the Modbus network The parameters of the Modbus network can be configured via the graphic display terminal or using the Motion Pro CoDeSys software Configuration via the graphic display terminal The parameters Modbus address and Modbus baudrate are available in the sub menu LC CONFIGURATIONI Modbus parameter Description Possible values Terminal Default display value Modbus address 1 to 247 1 to 247 0 0 Lexium Controller Modbus server disabled 0 Modbus baudrate Baudrate of Modbus communication 9600 19200 38400 38400 NOTE The graphic display terminal will only operate at 38400 bps and the value 8 N 1 8 bits sent no parity 1 stop bit Any other value will make communication with the graphic display terminal impossible Configurati
6. common signal OV Note Do not use terminals marked not connected Connecting to the Lexium Controller Connection accessories must be ordered separately please refer to the catalogs Connect the RJ45 cable to the MODBUS port on the Lexium Controller Wiring recommendations Use the Telemecanique cable with 2 pairs of shielded twisted conductors references TSXCSA100 TSXCSA200 or TSXCSA500 The Modbus cable must be at least 30 cm away from the power cables If it is necessary to cross the Modbus cables and the power cables be sure they cross at right angles As far as possible connect the shielded cable to a protective ground for example to the ground of each device if this ground is connected to the protective ground e Install a line terminator at each end of the line Check the polarity of the line Connect the common common signal to the protective ground at one or more points on the bus For more information refer to the Electromagnetic compatibility of industrial networks and fieldbuses manual Cable routing practices When wiring Lexium Controller to a Modbus network follow all wiring practices required by national and local electrical codes Also observe the following guidelines Avoid areas of high temperature moisture vibration or other mechanical stress Secure the cable where necessary to prevent its weight and the weight of other cables from pulling or twisting the cable U
7. function successful Slave no Request code or Response code Sub code Value of 1st byte Value of 2nd byte CRC16 Hi Lo Lo Hi 04 08 00 00 31 32 74 1B hexadecimal values 20 Modbus protocol Write N output words function 16 16 10 This function can be used to write the Lexium Controller parameters or variables regardless of their type The maximum size of the number of variables that can be read in one frame is 121 Request Slave no 10 No of first word Number of words Number of bytes Value of first word CRC16 Hi Hi Lo Hi Lo Lo Hi 1 byte 1 byte 2 bytes 2 bytes 1 byte 2 bytes 2 bytes Response Slave no 10 No of first word Number of words CRC16 Hi Lo Hi Lo Lo Hi 1 byte 1 byte 2 bytes 2 bytes 2 bytes Example Writing values 20 and 30 to words W9001 and W9002 in slave 2 W9001 to 20 and W9002 to 30 Request Slave no Request No of first word Number of Number of Value of first word Value of second CRC16 code words bytes word Hi Lo Hi Lo Hi Lo Hi Lo Lo Hi 02 10 23 29 00 02 04 00 14 00 1E 73 A4 Response Slave no Response code No of first word Number of words CRC16 Hi Lo Hi Lo Lo Hi 02 10 23 29 00 02 9B B7 hexadecimal values 21 Modbus protocol Identification function 43 16 2B
8. large number of the parameters from 60000 upwards are not available and are used for Ethernet connectivity and functions After the Ethernet parameters the zone does not exist For a list of the available Ethernet parameters refer to the Ethernet manual 23 30072 452 88 09 2008
9. metallic conduits at right angles whenever power and control network wiring cross Attenuate conducted emissions from the Lexium Controller to the line in some installations to prevent interference with telecommunication radio and sensitive electronic equipment Such instances may require attenuating filters Consult the Lexium Controller catalog for selection and application of these filters RS485 standard The RS485 standard allows variants of different characteristics Polarity Line termination Distribution of a reference potential Number of slaves Length of bus The new Modbus specifications published on www modbus org in 2002 gives precise details of all these characteristics They are also summarized in the next section standard schematic The new Telemecanique devices comply with these specifications Connection to the bus Modbus standard schematic The standard schematic corresponds to the Modbus specification published in 2002 on www modbus org Modbus_over serial_ line _V1 pdf Nov 2002 and in particular to the 2 wire multipoint serial bus schematic The Lexium Controller conforms to this specification Schematic diagram a N s m of 1200 l 1 inF inF I Common peo ETES i ee i ST eae H I l 1 I l I I I 1 1 I 1 I H I I 1 I I 1 l 1 I l 1 I 1 i I I 1 1 li l 1 I j I I 1 I 1 1 1 I l i H i e e ea leere
10. Lexium Controller Modbus User s manual Retain for future use 30072 452 88 Schneider Contents Important information Documentation structure Introduction Presentation Connection to the bus Connecting the Modbus RJ45 connector or graphic display terminal Connecting to the Lexium Controller Wiring recommendations RS485 standard Modbus standard schematic ONNNNN OO m A Connecting via RJ45 wiring system Ce Connecting via junction boxes Connecting on screw terminals Configuration Configuring the Modbus network Diagnostics Modbus LEDs Communication management and communication interruptions Modbus protocol RTU mode Principle Addresses Modbus functions Read N output words function 3 Write one output word function 6 Diagnostics function 8 Write N output words function 16 16 10 Identification function 43 16 2B Exception responses Read non existent or protected parameters While every precaution has been taken in the preparation of this document Schneider Electric assumes no liability for any omissions or errors it may contain nor for any damages resulting from the application or use of the information herein The products and options described in this document may be changed or modified at any time either from a technical point of view or in the way they a
11. broadcasting The Lexium Controller takes account of the request but does not respond to it The Lexium Controller has a Modbus server that has its own address A Modbus server to enable the Lexium Controller to access all the parameters available in the Modbus table The list of these parameters and variables MW used by the Motion Pro CoDeSys software can be found in the document 18 Modbus protocol Modbus functions The following table indicates which Modbus functions are managed by the Lexium Controller and specifies their limits The read and write functions are defined from the point of view of the master Code Modbus name Function name Broadcasting Max value of N 3 16 03 Read Holding Registers Read N output words NO 121 words max 6 16 06 Write Single Register Write one output word YES _ 8 16 08 Diagnostics Diagnostics NO 16 16 10 Write Multiple Registers Write N output words YES 121 words max 43 16 2B Read Device Identification Identification NO Read N output words function 3 Note Hi most significant bits Lo least significant bits This function can be used to read the Lexium Controller parameters regardless of their type Maximum size of the number of variables that can be read in one frame 121 Request Slave no 03 No of first word Number of words CRC16 Hi Lo Hi Lo Lo Hi 1 byte 1 byte 2 bytes 2
12. bus cable TSX CSA100 or 174 CEV 300 10 TSX CSA200 or TSX CSA500 PROFIBUS DP gateway RJ45 RS485 3 m cable equipped with an RJ45 connector VW3 A8 306 D30 LA9P307 and stripped at the other end Fipio LUFP1 or RJ45 RS485 3 m cable equipped with an RJ45 connector VW3 A8 306 D30 PROFIBUS DP LUFP7 or DeviceNet LUPF9 gateway and stripped at the other end PC with serial port PC with male 9 way SUB D RS232 serial port RS232 RS485 converter and Modbus cable TSX SCA 72 and TSX CSA100 or TSX CSA200 or TSX CSA500 Type of master Master interface Modbus connection accessories for junction boxes using SUB D 15 Description Reference Twido PLC Adaptor or screw terminal RS485 interface module TSX Micro PLC Mini DIN RS485 connector port PCMCIA card TSX SCP114 Cable equipped with a special connector and a SUB D 25 connector TSX SCY CU 4530 TSX Premium PLC TSX SCY 11601 or TSX SCY 21601 module SUB D 25 socket Cable equipped with a 25 way SUB D connector and stripped at the other end TSX SCP CU 4530 PCMCIA card TSX SCP114 Cable equipped with a special connector and stripped at the other end TSX SCY CU 4530 Ethernet bridge 174 CEV 300 10 Screw terminal RS485 PROFIBUS DP gateway RJ45 RS485 LA9P307 Fipio gateway LUFP1 or RJ45 RS485 3 m cable equipped with an RJ45 connector VW3 A8 306 PROFIBUS DP gateway LUFP7 and a SUB D
13. bytes 2 bytes Response Slave no 03 Number of First word value Last word value CRC16 se lead Hi Lo Hi Lo Lo Hi 1 byte 1 byte 1 byte 2 bytes 2 bytes 2 bytes Example 1 Using function 3 to read the 4 words mW3102 W3102 to mW3105 W3105 16 0C1E to 16 0C21 in slave 2 where mw3102 V mw3102 V mw3104 V mw3105 V Le ie me pr W3102 16 0028 W3103 16 0258 W3104 16 01F4 W3105 16 0000 zn Request 02 03 OC1E 0004 276C Response 02 03 08 0028 0258 01F4 0000 52B0 Value of W3 102 W3 103 W3 104 W3 105 19 Modbus protocol Write one output word function 6 Request and response the frame format is identical Slave no 06 Word number Value of word CRC16 Hi Lo Hi Lo Lo Hi 1 byte 1 byte 2 bytes 2 bytes 2 bytes Example Writing value 16 000D to word mw9001 W9001 16 2329 in slave 2 value 13 Request and response 02 06 2329 000D 9270 Diagnostics function 8 Subcode 16 00 echo This function asks the slave being interrogated to echo return the message sent by the master in its entirety Request and response Slave no 08 Sub code Data CRC16 Hi Lo Hi Lo Lo Hi 1 byte 1 byte 2 bytes N bytes 2 bytes Sub code Request data Response data Function executed 00 XX YY XX YY Echo Example Values 16 31 and 16 32 echoed by slave 4 Request and response if
14. ectrical equipment should be installed operated serviced and maintained only by qualified personnel No responsibility is assumed by Schneider Electric for any consequences arising out of the use of this material BLMT00016 2008 Schneider Electric All rights reserved WARNING LOSS OF CONTROL The designer of any control scheme must consider the potential failure modes of control paths and for certain critical control functions must provide a means to achieve a safe state during and after a path failure Examples of critical control functions are emergency stop and overtravel stop Separate or redundant control paths must be provided for critical control functions System control paths may include communication links Consideration must be given to the implications of unanticipated transmission delays or failures of the link Each implementation of a Lexium Motion Controller must be individually and thoroughly tested for proper operation before being placed into service Failure to follow these instructions can result in death serious injury or equipment damage 1 For additional information refer to NEMA ICS 1 1 latest edition Safety Guidelines for the Application Installation and Maintenance of Solid State Control Documentation structure This manual is part of a series describing the Lexium Motion Controller LMC The following manuals may be downloaded at www us telemecanique com Insta
15. indicate the Modbus communication status MODBUS STATUS LED Each LED lights up for 200 ms when a frame is being transmitted on the corresponding Modbus network whether or not this is destined for the Lexium Controller Communication management and communication interruptions If there is no Modbus communication the LEDs on the graphic display terminal are off There is no specific Modbus communication interruption LED Following initialization power up the Lexium Controller checks that frames are being sent on the Modbus network These frames can be sent from a Modbus PLC or an HMI and also from a PC on which the Motion Pro CoDeSys software is running Ifthe cable is disconnected from the Modbus master then reconnected in order to communicate using the Motion Pro CoDeSys software the Lexium Controller automatically detects the Motion Pro CoDeSys frame format with no action required from the user It is possible to reconnect to the Modbus Master again with no action required from the user Thus when a Modbus communication interruption occurs the Lexium Controller does not react The communication interruption must be managed by the Modbus Master from a PLC a PC an industrial terminal Magelis or a SCADA monitoring the Lexium Controller 17 Modbus protocol RTU mode RTU transmission mode is used The frame contains no message header byte and no end of message byte It is defined as follows
16. llation Manual This manual describes e How to install the controller How to connect the controller Optional Graphic Display Terminal User s Manual This manual describes How to install the graphic display terminal How to connect the graphic display terminal How to program the controller via the graphic display terminal EasyMotion Programming Manual Not available in the USA Supplied preinstalled in the Lexium Controller the application model associated with Easy Motion mode is a user friendly tool that can be used for e Rapid axis configuration e Use of Manual Automatic mode Creating positioning tasks Editing cam profiles Backup and recovery of the machine parameters Diagnostics of the motion controller and the various axes This programming manual also contains a table of the parameters that can be accessed via the communication protocols MotionPro Programming Manual The Motion Pro Programming Manual is included in the software online help This online help describes The software interface IEC 1131 programming e The function libraries standard functions motion control functions application functions The Lexium controller configuration screens Modbus Ethernet PROFIBUS DP and DeviceNet manuals These manuals describe e Connection to the bus or network e Diagnostics Software setup e The protocol communication services Introduction Presentation The integrated commu
17. nication port provides direct access to the Modbus protocol The Modbus HMI RJ45 port located on the front panel of the Lexium Controller is used to connect The graphic display terminal Magelis industrial HMI terminal A programmable controller PLC Another controller The Motion Pro CoDeSys software workshop The Modbus port on the Lexium Controller can be used for the following functions Configuration e Adjustment e Control e Monitoring The Lexium Controller supports The 2 wire RS485 physical layer RTU transmission mode This manual describes how to set up the Lexium Controller on Modbus and the available Modbus services The slave address is configured using Motion Pro CoDeSys The Modbus network speed is 38 4 kbps It can be configured for 19 2 but this configuration limits use with Motion Pro CoDeSys via the serial link LMC10 LMC20 LMC20A Modbus connector or graphic display terminal Connection to the bus Connecting the Modbus RJ45 connector or graphic display terminal Connector on Lexium Controller Terminal Description 1 not connected not connected not connected B signal RS485 V1 signal Modbus A signal RS485 VO signal Modbus not connected Modbus VP signal 12 V DC power supply provided by the Motion Controller only for the power supply of an MODBUS RS485 RS232 converter or a graphic display terminal N oO oF AAN 8 Modbus
18. on using the Motion Pro CoDeSys software The configuration can be read via the PLC Browser key word The key word for ascertaining the address and speed of the Modbus network is mbusinf CoDeSys PRERELEASE SOFTWARE FOR TEST ONLY simple_test pro P D X Fichier Editer Projet Ins rer Extras EnLigne Fen tre Aide Be ESS SG Colas H een Oo G Configuration de l auto A a Configuration de la cib E Configuration des tach ModBus Configuration Info D Bans dati ModBus Address O ModBus BaudRate 38400 End of ModBus Configuration Info j fi Gestionnaire de bibliotl U Histogramme E Journal Liste de programmes C EN LIGNE TODO Lokal SIM EN MARO 15 Configuration The key word for configuration of the Modbus network address is for example with address 2 mbaddr 2 CoDeSys PRERELEASE SOFTWARE FOR TEST ONLY simple_test pro P O X Fichier Editer Projet Ins rer Extras EnLigne Fen tre Aide S aoa Colas mbaddr 2 GEJ Configuration de l auto ae Configuration de la cib BM Configuration des tach ModBus Node Address configured e 3 Espace de travail j ffi Gestionnaire de bibliot Histogramme Es Journal i Liste de programmes C fa PLC Browser EN LIGNE TODO Lokal SIM EN MARD 16 Diagnostics Modbus LEDs The Modbus LEDs are located on the RJ45 port on the front panel of the Lexium Controller They
19. re operated Their description can in no way be considered contractual at a Ww ak ak AA ei ak ak aD DD NN Rasa a a ee ae ae N NN MN HN NM Important information PLEASE NOTE Please read these instructions carefully and examine the equipment in order to familiarize yourself with the device before installing operating or carrying out any maintenance work on it The following special messages that you will come across in this document or on the device are designed to warn you about potential risks or draw your attention to information that will clarify or simplify a procedure A The addition of this symbol to a Danger or Warning safety label indicates the presence of an electrical hazard that will result in injury if the instructions are not followed follow this symbol in order to avoid any risk of injury or death A DANGER DANGER indicates an imminently hazardous situation which if not avoided will result in death serious injury or equipment damage A This is a safety warning symbol It warns you of potential risks of injury You must comply with all safety messages that WARNING WARNING indicates a potentially hazardous situation which if not avoided can result in death serious injury or equipment damage CAUTION CAUTION indicates a potentially hazardous situation which if not avoided can result in injury or equipment damage PLEASE NOTE El
20. se cable ducts raceways or other structures to protect the cable Use these structures for signal wiring paths They must not contain power wiring Avoid sources of electrical interference that can induce noise into the cable Use the maximum practicable separation from such sources When planning cable routing within a building follow these guidelines e Maintain a minimum separation of 1 m 3 28 ft from sources of electromagnetic interference such as air conditioners and large blowers elevators and escalators radios and televisions intercom and security systems fluorescent incandescent and neon lighting fixtures e Maintain a minimum separation of 3 m 9 84 ft from stronger electromagnetic interference generating equipment such as line and motor power wiring transformers generators alternators Connection to the bus When wiring in electrical equipment rooms or large electrical equipment line ups observe the following guidelines for cable segregation and separation of circuits Use metallic conduit for Lexium Controller wiring Do not run control network and power wiring in the same conduit Separate non metallic conduits or cable trays used to carry power wiring from metallic conduit carrying low level control network wiring by at least 300 mm 11 8 in Separate metallic conduits carrying power wiring or low level control network wiring by at least 80 mm 3 15 in Cross the metallic conduits and non
21. to the screw terminals of the LU9GC3 splitter box TSX SCY CM 6030 PCMCIA card TSX SCP114 Stripped cable TSX SCP CM 4030 Ethernet bridge 174 CEV 300 10 Screw terminal RS485 3 m cable equipped with an RJ45 connector and stripped at the other end VW3 A8 306 D30 PROFIBUS DP gateway RJ45 RS485 1 m cable equipped with 2 RJ45 connectors VW3 P07 306 R10 LA9P307 Fipio LUFP1 or RJ45 RS485 0 3 m cable equipped with 2 RJ45 connectors or VW3 A8 306 RO3 or PROFIBUS DP LUFP7 or DeviceNet LUFP9 gateway 1 m cable equipped with 2 RJ45 connectors or 3 m cable equipped with 2 RJ45 connectors VW3 A8 306 R10 or VW3 A8 306 R30 PC with serial port PC with male 9 way SUB D RS232 serial port RS232 RS485 converter and 3 m cable equipped with an RJ45 connector and stripped at the other end for connection to the screw terminals of the LU9GC3 splitter box TSX SCA 72 and VW3 A8 306 D30 11 Connection to the bus Connecting via junction boxes Connection accessories 1 Master PLC PC or communication module 2 Modbus cable depending on the type of master see table page 13 3 Modbus cable TSX CSA 00 4 Junction box TSX SCA 50 5 Subscriber socket TSX SCA 62 6 Modbus drop cable VW3 A8 306 7 Modbus drop cable VW3 A8 306 D30 Description No Reference Junction box 4 TSX SCA 50 3 screw terminals and an RC line terminator
22. ubdeterminant 4 byte ASCII string for example 0201 for version 2 1 2B 80 Type of MEI Error code CRC16 Slave no AB 0E 00 to 02 A F 1 byte 1 byte 1 byte 1 byte 1 byte 1 byte Error code 16 00 No error 16 01 The question code 16 2B the Type of MEI 16 0E or the ReadDeviceld 16 01 contained in the question is incorrect 16 02 The Object Id 16 00 contained in the question is incorrect 22 Modbus protocol Exception responses An exception response is returned by a slave when it is unable to perform the request addressed to it Format of an exception response CRC16 Lo Hi Slave no Response code Error code 1 byte 1 byte 1 byte 2 bytes Response code function code of the request 16 80 the most significant bit is set to 1 Error code 1 The requested function is not recognized by the slave 2 The word addresses indicated in the request do not exist in the slave 3 The word values indicated in the request are not permissible in the slave 4 The slave has started to execute the request but cannot continue to process it completely Read non existent or protected parameters When a set of parameters is read or when a non existent or protected parameter is written by a Modbus function the Lexium Controller sends an exception response The list of parameters or variables that can be accessed by Modbus is as follows From 0 to 59999 all the parameters are available _A
23. xes With integrated cable 0 3 m 6 VW3 A8 306 TF03 With integrated cable 1 m 6 VW3 A8 306 TF10 Line For RJ45 connector R 150 Q 5 VW3 A8 306 R terminators Connection cables Description Length m Connectors No Reference Cables for 3 1 RJ45 connector and 1 stripped end VW3 A8 306 D30 Mogpus ous 0 3 2 RJ45 connectors 4 VW3 A8 306 R03 1 2 RJ45 connectors 4 VW3 A8 306 R10 3 2 RJ45 connectors 4 VW3 A8 306 R30 RS 485 double 100 Supplied without connector 7 TSX CSA 100 shielded twisted 200 Supplied without connector 7 TSX CSA 200 pair cables 500 Supplied without connector 7 TSX CSA 500 10 Connection to the bus Type of master Master interface Modbus connection accessories for RJ45 wiring system Description Reference Twido PLC Adaptor or mini DIN RS485 interface module 3 m cable equipped with a mini DIN connector and an RJ45 connector TWD XCA RJ030 Adaptor or screw terminal RS485 interface module 3 m cable equipped with an RJ45 connector and stripped at the other end VW3 A8 306 D30 TSX Micro PLC Mini DIN RS485 3 m cable equipped with a mini DIN connector and an TWD XCA RJ030 connector port RJ45 connector PCMCIA card Stripped cable TSX SCP CM 4030 TSX SCP114 TSX Premium PLC TSX SCY 11601 or TSX SCY 21601 module 25 way SUB D socket Cable equipped with a 25 way SUB D connector and stripped at the other end for connection
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