YASKAWA MP920 User Manual page 128

6 217IF Module
6.4.2 RS-422/485 Interface Cables
RS-422 Wiring
MP920 217IF
RS232/422
CN1
RUN
ERR
TRX1
TRX2
TRX3
CN2
CN3
217IF CN3
(MR-8)
7
TX (+)
6
TX (-)
5
TXR
2
RX (+)
1
RX (-)
4
RXR
3
SH
8
SH
Terminal
(PLC, etc.)
Remote station
FG
217IF CN3
(MR-8)
2
RX (+)
1
RX (-)
4
RXR
7
TX (+)
6
TX (-)
5
TXR
3
SH
8
SH
FG
6-12
When the remote station is
also a 217IF Module, the
wiring will be as shown below.