Lenze ESVZAR0 RS-485 User Manual
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CMVMB401C
Contents
1 Safety Information .............................................................................................................................................................3
2 Introduction .......................................................................................................................................................................5
2.1
Module Specifications ............................................................................................................................................5
2.2
Module Identification ..............................................................................................................................................6
3 Installation ........................................................................................................................................................................7
3.1
Mechanical Installation...........................................................................................................................................7
3.2
RS-485 Terminal Block ..........................................................................................................................................8
3.3
Electrical Installation ..............................................................................................................................................8
3.3.1 Cable Types ................................................................................................................................................8
3.3.2 Connections and Shielding ..........................................................................................................................8
3.3.3 Network Termination ..................................................................................................................................9
4 Extended Parameters for Modbus RTU.............................................................................................................................10
4.1
Parameter Menu ..................................................................................................................................................10
5 Modbus Protocol Details ..................................................................................................................................................12
5.1
Data Transmission ...............................................................................................................................................12
5.2
Register Numbering .............................................................................................................................................12
5.3
Supported Function Codes ...................................................................................................................................12
6 Modbus Message Details ................................................................................................................................................13
6.1
Register Reading ..................................................................................................................................................13
6.1.1 Message structure for reading one 16-bit register.....................................................................................13
6.1.2 Message structure for reading two 16-bit registers ...................................................................................13
6.1.3 Message structure for reading one 32-bit register.....................................................................................14
6.1.4 Message structure for reading one 4 word register ...................................................................................14
6.1.5 Message structure for reading six 16-bit registers ....................................................................................14
6.2
Register Writing ...................................................................................................................................................15
6.2.1 Message structure for reading one word ...................................................................................................15
6.3
No Response Conditions.......................................................................................................................................15
6.4
Exception Responses ...........................................................................................................................................15
6.4.1 Message structure for an exception response to a read request (03) .........................................................15
6.4.2 Message structure for an exception response to a write request (06) ........................................................15
6.4.3 Exception Codes (EC) ................................................................................................................................15
7 Commissioning ...............................................................................................................................................................16
7.1
Drive Monitoring ..................................................................................................................................................16
7.2
Drive Programming and Control ...........................................................................................................................16
7.3
Unlocking & Locking Drive Controls & Parameters ................................................................................................16
7.4 Network Watchdog Timer .....................................................................................................................................17
7.5
Watchdog Timer Controls .....................................................................................................................................17
7.5.1 Watchdog Time-out Period (P425) ............................................................................................................17
7.5.2 Watchdog Time-out Action (P426) .............................................................................................................17
8 Typical Network Applications ...........................................................................................................................................18
8.1
Controlling the Drive ............................................................................................................................................18
8.2
Changing Drive Parameters ..................................................................................................................................18
8.3
Controlling Frequency, PID & Torque Setpoints .....................................................................................................18