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5
23. MODICON PLC 5-121
Connection to PLCs
Wiring
Wiring diagrams with the PLC are shown below.
RS-232C
Wiring Diagram 1
V7 (CN1)
PLC
D-sub 25pin(Male: )
D-sub 9pin(Male: )
FG
SD
RD
RS
CS
SG
1
2
3
4
5
7
RX
TX
DTR
2
3
4
GND 5
DSR 6
RTS 7
CTS 8
* Use shielded twist-pair cables.
D-sub 25-pin (male)
D-sub 9-pin (male)