Schneider Electric
VW3 A3 303
user manual
Atv71ModbusJbusENV1 2005-05
Install
Error codes
Uni-Telway schematic
Contact no. Signal
Communication faults
Connecting to the bus
Configuration
Diagnostics
Connection accessories
Hardware setup
Page 47
atv71_Modbus_Jbus_EN_V1
2005-05
Page 46
Page 47
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Page 46
Page 47
Contents
Altivar
Contents
Electric shock will result in death or serious injury
Before you begin
Communication Parameters Manual
Installation Manual
Documentation structure
Programming Manual
Notation
Introduction
Presentation
Hardware description
Hardware setup
Installing the card in the drive
Receipt
Coding the address
Switch coding
Choosing polarization
1234
Address
Modbus RS485 standard
Connecting to the bus
Wiring recommendations
Connection cables
Connection via RJ45 wiring system
Connection accessories
TSX SCP CM
Connection cables for the master
Type of master Master interface Description Catalog number
TWD XCA RJ030
Cables
Connection via junction boxes
Description Catalog Number Subscriber socket
RS485 double shielded twisted pair
TSX P ACC
TSX CSA500
Communication parameters
Configuration
Parameter Value Comment
Control Command
Control via Modbus in I/O profile
Control via Modbus or the terminals in I/O profile
Control via Modbus or the terminals in Drivecom profile
Control via Modbus in Drivecom profile
Configuration
COM. Scanner Input
Example of configuration via the graphic display terminal
Communication scanner
RDY NET
COM. Fault Management
Communication faults
Format Range Terminal display
CONFIG. COMM. MAP
Monitored parameters
Format
Green RUN Red ERR Meaning Corrective action
Diagnostics
Checking the address
LEDs
COM Scan Output MAP CMD. Word Image
RUN NET
Communication MAP
COM. Scanner Input MAP
COM Scan Output MAP
Input variable Scanner parameter
Output variable Scanner parameter
Card fault
Communication fault
Slave Slave j Slave k
Modbus protocol
Principle
Slave address Function code Data
RTU mode
Ascii mode
Modes
Code Modbus name Description Broadcast Size of data
Modbus functions available
Read Holding/Input Registers 3/4
Write Single Register
Diagnostics
Write Multiple Registers 16 = 16#10
Get Comm Event Counter 11 = 16#0B
Read/Write Multiple Registers 23 = 16#17
Machine
Read Device Identification 43 = 16#2B
MEI
Example of positive response
Code Modbus name Description Size of data
Output variables Logic address Default assignment
Input variables Logic address Default assignment
Parameter Logic
Input variable address Logic address Default value
Parameter Logic Read
Value Parameter assigned
Output control
Parameter assigned
Input monitoring
Response
Code Error code
Exception responses
Logic address Parameter Value
Read non-existent or protected parameters
RS485 standard
Appendix
Master
Modbus 2-wire standard schematic
Modbus 4-wire standard schematic
Uni-Telway schematic
Type of trunk cable Cable with 1 shielded twisted pair
Wire Jbus schematic
Recommendations
Creating a Modbus bus using non-standard equipment
Different scenarios
Example
Calculating the polarization
SUB-D
RS485 schematic for the card
Card connector pinout
Contact no. Signal
Atv71ModbusJbusENV1 2005-05
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