YASKAWA MP920 User Manual page 297

Appendix D Wiring Communications
D.1.1 Connection Methods
In-panel twisted-
pair cable
YS-1PEV-SB:
3P × 0.3 mm
MP920 217IF
(CN1)
Signal Pin No.
Name
1
FG
2
SD(TXD)
3
RD(RXD)
4
RS
5
CS(CTS)
6
DR(DSR)
7
SG
8
CD
9
ER(DTR)
CN3 RS-485 Cable
The following figure shows RS-485 transmission line connection examples for 217IF Mod-
ule of the MP920.
MP920 217IF
120Ω
RX- RX+ TX- TX+
1 2 6
2
RD- RD+ SD- SD+
Fig. D.3 217IF RS-485 Transmission Line Connection Examples
• The terminating resistance at the end station of the transmission line must be connected.
Shield treatment is required at each intermediate station of the transmission line.
Follow the CN3 wiring shown in 6.4.2 RS-422/485 Interface Cables.
Cable Connections and
Signal Directions
120Ω
CN3
7
In-panel twisted-
pair cable
YS-1PEV-SB:
1P × 0.3 mm
Es
D-6
PC/AT or Compatible
Computer
Pin No. Signal
Name
1
FG
2
SD(TXD)
3
RD(RXD)
4
RS
5
CS
6
DSR(DR)
7
SG
8
CD
9
RTR(ER)
MP920 217IF
TX- TX+
1 2 6
2
SRD- SRD-
120Ω
CN3
7
Es