YASKAWA MP920 User Manual page 129

RS-485 Wiring
MP920 217IF
RS232/422
CN1
RUN
ERR
TRX1
TRX2
TRX3
CN2
CN3
Terminal
(PLC, etc.)
217IF CN3
7
TX (+)
6
TX (-)
5
TXR
2
RX (+)
1
RX (-)
4
RXR
3
SH
8
SH
FG
Note: 1. The terminating resistance will be enabled by connecting terminals
5 and 6, and terminals 1 and 4 at the CN3 interface.
2. Connect the 217IF CN3 FG connection to the FG terminal of the
Power Supply Module, using a lead wire.
RS-485
Terminal Terminal
(PLC, etc.) (PLC, etc.)
2
1
TX / RX TX / RX
2
1
3 6 7
SH TX TX RX RX SH
(-) (+) (-) (+)
6-13
6.4 Cables
Terminal
(PLC, etc.)
Shield
TX / RX
FG
For example, when a 217IF Module is
connected at intermediate position,
the wiring will be as shown below.
1 2 8
6