Poznámky redaktora
the wiring diagram provided this manual.15.2.4 Power supply
The PR120/D-M COM communication module only powered the relay there 24V auxiliary voltage available.1 General characteristics
Dedicated communication module for connecting the relay Modbus net, and for remote supervisory and control activities the circuit-breakers.2.5 nnection
Refer fig...2.2 Front view
- "Power" LED (lit when Vaux installed)
- LED RX/TX (data send/receive signal).
120/158
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t t
L L
t t
L L
L L
L L
L L
L L
tty fflt L
L L
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L L
L L
L L
L L
L L
L L
L L
L L
L L
L L
L L
L L
L L
L L
L L
L L
L L
L L
L L
L L
L L
L L
L L
L L
L L
L L
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L L
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L L
15.
15.2.6 unication ction savailable
The communication function the PR122/P, PR123/P releases with PR120/D-M COM listed the table:
PR122/P PR123/P PR120/D-M COM
Protocol Modbus RTU
Physical interface RS-485
Baud rate 9600 19200 bit/s
15.
15.2. 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
A ssin Modbus standard
ABB
Model L2234 Apparatus Scale
L 2778
Doc No- 2
Page No.2 PR120/D-M COM communication module
15.2.
15.3 Releases com plete ith the odule
- optional for PR122/P
- optional for PR123/P
15.7 PR120/D-M COM odule menu
Parameter Function Values Notes
Local/rem ote Local/remote
Serial address .2
