Page 2 - Contents
2 Contents 1. Before you begin___________________________________________________________________________________________ 3 2. Documentation structure_____________________________________________________________________________________ 4 3. Introduction ______________________________________________...
Page 3 - DANGER; HAZARDOUS VOLTAGE; repair, and maintenance must be performed by qualified personnel.; Electric shock will result in death or serious injury.; EQUIPMENT DAMAGE; Do not operate or install any drive that appears damaged.
3 1. Before you begin Read and understand these instructions before performing any procedure with this drive. DANGER HAZARDOUS VOLTAGE • Read and understand the Installation Manual before installing or operating the Altivar 71 drive. Installation, adjustment, repair, and maintenance must be performe...
Page 4 - Documentation structure; Installation Manual
4 2. Documentation structure The following Altivar 71 technical documents are available on the Telemecanique website (www.telemecanique.com) as well as on the CD-ROM supplied with the drive. b Installation Manual This manual describes:• How to assemble the drive• How to connect the drive b Programmi...
Page 5 - Drive terminal displays; LFF; Formats
5 3. Introduction 3. 1. Presentation The communication card (catalog number VW3 A8 303 ) is used to connect an Altivar 71 drive to a Uni-Telway or Modbus bus. This manual only describes how to use the Modbus protocol. For Uni-Telway, please refer to the Uni-Telway protocol manual. The data exchanges...
Page 7 - Choosing polarization; RS485 line polarization at drive level; Coding the address
7 4. Hardware setup 4. 4. Switch coding b Choosing polarization Normal setting for a Modbus bus:• No polarization at drive level Special setting (see "Creating a Modbus bus using non-standard equipment" on page 44 ): • 4.7 k Ω RS485 line polarization at drive level b Coding the address The a...
Page 8 - Address 0 is not valid.
8 4. Hardware setup The table below indicates the positions of the 8 switches for all configurable addresses: Note: Address 0 is not valid. Address Switches 1234 5678 Address Switches 1234 5678 Address Switches 1234 5678 Address Switches 1234 5678 Address Switches 1234 5678 0 0000 0000 0 52 0011 010...
Page 9 - Connecting to the bus
9 5. Connecting to the bus 5. 1. Wiring recommendations • Use Telemecanique-approved cables and wiring accessories to ensure good transmission quality (matched impedance, immunity, shielding connection, etc.). • Keep the Modbus cable away from the power cables (30 cm minimum). • Be sure to cross the...
Page 10 - Connection accessories; pp
10 5. Connecting to the bus 5. 3. Connection via RJ45 wiring system b Connection accessories b Connection cables 1. Master (PLC, PC or communication module) 2. Cable depending on the type of master (see table) 3. Splitter block LU9 GC3 4. Drop cable VW3 A58 306 R pp 5. Line terminators VW3 A8 306 RC...
Page 11 - Connection cables for the master; Type of master
11 5. Connecting to the bus b Connection cables for the master Type of master Master interface Description Catalog number 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 mo...
Page 14 - Parameter; to
14 6. Configuration 6. 1. Communication parameters Configure the following parameters in the [1.9 - COMMUNICATION] ( COM- ) menu, [Uni-Telway/Modbus] ( UtL- ) submenu: [Protocol] ( PrO ) , [Bit rate] ( bdr ) and [Format] ( FOr ) . These parameters can only be modified when the motor is stopped. Modi...
Page 18 - Code
18 6. Configuration 6. 3. Communication scanner The communication scanner enables all the application-relevant parameters to be grouped in 2 consecutive word tables so that single read and write operations may be performed. It is even possible to perform a single transaction using the "Read/Writ...
Page 19 - Value
19 6. Configuration 6. 4. Communication faults A Modbus fault is triggered if the Modbus card does not receive any Modbus requests at its address within a predefined time period (timeout). All Modbus request types are taken into account (read, write, etc.). The time out is fixed at 10 s (non-modifia...
Page 20 - Format
20 6. Configuration 6. 5. Monitored parameters It is possible to select up to 4 parameters to display their values in the [1.2 - MONITORING] menu ( [COMMUNICATION MAP] submenu) on the graphic display terminal. The selection is made via the [6 – MONITOR CONFIG.] menu ( [6.3 - CONFIG. COMM. MAP] subme...
Page 21 - AdrC
21 7. Diagnostics 7. 1. Checking the address On the graphic display terminal or integrated display terminal, check the address that has been coded on the switches using the [Address] ( AdrC ) parameter in the [1.9 COMMUNICATION] ( COM- ) menu, [Uni-Telway / Modbus] ( UtL- ) submenu. This parameter c...
Page 25 - Slave i
25 8. Modbus protocol 8. 1. Principle The Modbus protocol is a master-slave protocol. Direct slave-to-slave communications are not possible. For slave-to-slave communication, the master’s application software must therefore be designed to interrogate one slave and send backdata received to the other...
Page 26 - Slave address
26 8. Modbus protocol 8. 2. Modes b RTU mode The Modbus RTU frame contains no message header byte, nor end of message bytes. It is defined as follows: 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 t...
Page 33 - Example of positive response:
33 8. Modbus protocol Negative response specifically related to the identification function: Example of positive response: • Address = 2• Manufacturer name = “Telemecanique”• Device name = “ATV71HU15M3”• Device version = “0201”• Device name = “MACHINE 4” Request: Response: Slave no. 2B + 80 AB Type ...
Page 34 - CMM
34 8. Modbus protocol 8. 11. Communication scanner The communication scanner can be used to enhance application performance. The drive automatically copies non-contiguous parametersto an input table and an output table. Thus, the copy of several non-contiguous parameters can be read or written in a ...
Page 35 - Example
35 8. Modbus protocol The link between the drive parameters and the communication scanner variables can be made: - Via the display terminal (see section "6. Configuration - 6.2 Communication scanner")- Via Modbus: Before starting the application, the PLC must first write the address tables d...
Page 38 - Example of non-existent or protected parameters being read:; Logic address
38 8. Modbus protocol 8. 13. Read non-existent or protected parameters If a set of parameters is read using a Modbus function, the value returned for non-existent and protected parameters is equal to 16#8000. If the same Modbus function is used to read parameters, all of which are non-existent or pr...
Page 45 - Calculating the polarization; Example 1
45 9. Appendix b Calculating the polarization M Principle You must ensure that the equivalent bus resistance is between 162 Ω and 650 Ω . The equivalent bus resistance (Re) depends on the polarization resistance of the slaves (Rs) and the master (Rm): If Re is too low, reduce the number of slaves.If...
Page 46 - Signal
46 9. Appendix 9. 7. RS485 schematic for the card The RS485 interface on the Modbus card is electrically isolated from the drive. Schematic diagram: The polarization switches are used to connect or disconnect the pull-up and pull-down resistors, which implement either Modbus (no slavepolarization) o...
