Lenze E94P PositionServo Modbus User Manual
Page 4
4
P94MOD01C
Contents
4.5
Controlling the Drive ..................................................................................................... 22
4.6
Changing Drive Parameters .......................................................................................... 22
4.7
EIA-485 (RS485) Parameters ........................................................................................ 22
4.8
Ethernet Parameters ..................................................................................................... 23
4.9
Negative Number Transmission .................................................................................... 23
5
Modbus Implementation ............................................................................................................ 24
5.1
Supported Function Codes ............................................................................................ 24
5.2
Data Format, Size and Memory Area ............................................................................. 24
5.3
Register Numbering ...................................................................................................... 25
5.4
Endian Format .............................................................................................................. 26
5.5
Registers Access .......................................................................................................... 26
5.5.1 Register Reading .............................................................................................. 26
5.5.2 Register Writing................................................................................................ 26
5.6
No Response Conditions ............................................................................................... 26
5.7
Exception Responses .................................................................................................... 27
5.8
Modbus Message Frame ............................................................................................... 27
5.8.1 PDU Function Code ........................................................................................... 27
5.8.2 PDU Data ......................................................................................................... 27
5.8.3 ADU for Modbus RTU ........................................................................................ 28
5.8.4 ADU for Modbus TCP ........................................................................................ 28
6 Reference ................................................................................................................................. 29
6.1
PID List with Modbus Values ......................................................................................... 29