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14.6 Communication functionsavailable
The communication function the PR122/DC, PR123/DC releases with PR120/D-M COM listed the table:
PR122/DC PR123/DC PR120/D-M COM
Protocol Modbus RTU
Physical interface RS-485
Baud rate 9600 19200 bit/s
14...2. 247 247 default address
Baudrate 9600 bit/s
19200 bit/s
Physical protocol 8,E,1 8,0,1 8,N,2 8,N,1
Addressing Modbus standard
ABB
Model 3447
A pparatus Emax DC
S cale
d c.
14.14.2 120/D ica tio le
14.2 Front view
- "Power" LED (lit when Vaux installed)
- LED RX/TX (data send/receive signal).7 PR120/D-M COM module menu
Parameter Function Values Notes
Local/remote Local/remote
Serial address .2.5 Connection
Refer fig.2.
14.n 1SDH000635R0002
Page No.
14.2.2.1 General characteristics
Dedicated communication module for connecting the relay Modbus net, and for remote supervisory and control activities the circuit-breakers.
80/1 08
.2.4 Power supply
The PR120/D-M COM communication module only powered the relay there 24V auxiliary voltage available.2. the wiring diagram provided this manual.3 Releases complete with the module
- optional for PR122/DC
- optional for PR123/DC
14
