6
Modbus
1503 Modbus Mode (RTU/ASCII)
Modbus Mode
With Parameter
applies to the slot of an optional communication module or to the X21-Connection (depending on the
setting of Parameter
Modbus Mode
0- RTU
1- ASCII
Attention!
Changes are effective immediately and without a restart of the frequency inverter.
The Modbus messages are described in Chapter 7.3.10 "Modbus Transmission Modes".
1504 Modbus Baud Rate
Modbus Baud Rate
With Parameter
The setting applies to the slot of an optional communication module or to the X21-Connection (de-
pending on the setting of Parameter
Modbus Baud rate
1 –
2 –
3 –
4 –
19200 Baud
5 –
57600 Baud
6 –
115200 Baud
7 –
230400 Baud
Caution!
Changes are effective immediately and without a restart of the frequency inverter.
All bus participants must be set to the same baud rate.
1375 Modbus Parity
Modbus Parity
With Parameter
applies to the slot for an optional Communication Module or to the X21-Connection (depending on the
setting of Parameter
Modbus Parity
0 – Even
1 – Odd
2 – None
Attention!
Changes are effective immediately and without a restart of the frequency inverter.
1
The listed line lengths are recommended maximum values, which amongst other things, are dependent on the
properties of the cable.
22
1503 the Modbus Communication Mode can be selected. The setting
Protocol (CM/X21)
395).
1503
Modbus via serial connection with RTU transfer mode.
Modbus via serial connection with ASCII transfer mode.
1504 the transfer rate of the Modbus communication can be set.
Protocol (CM/X21)
1504
2400 Baud
Transfer rate 2400 Baud
4800 Baud
Transfer rate 4800 Baud
9600 Baud
Transfer rate 9600 Baud
Transfer rate 19200 Baud
Transfer rate 57600 Baud
Transfer rate 115200 Baud
Transfer rate 230400 Baud
1375 the parity of the Modbus communication can be set. The setting
Protocol (CM/X21)
395).
1375
Even parity is used in the data transfer.
Odd parity is used in the data transfer.
No parity is used in the data transfer.
Function
395).
Function
Function
Modbus Agile
1
max. Line Length
30 m
30 m
30 m
30 m
10 m
10 m
10 m
Modbus
02/2011
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