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26. SAIA PLC 5-127
Connection to PLCs
Wiring
Wiring diagrams with the PLC are shown below.
RS-232C
Wiring Diagram 1
Wiring Diagram 2
RS-485
Wiring Diagram 3
FG
RD
SD
SG
1
3
2
7
RX
TX
GND
V7 (CN1)
PLC
3
2
5
PGU port
* Use shielded twist-pair cables.
D-sub 25-pin (male)
FG
RD
SD
SG
1
3
2
7
TX
RX
GND
V7 (CN1)
PLC
12
11
10
PCD7.F120
* Use shielded twist-pair cables.
D-sub 25-pin (male)
FG
+SD
SG
−SD
+RD
−RD
1
12
7
13
24
25
T/R+
T/R−
V7 (CN1)
PLC
GND
10
12
11
PCD7.F110
* Use shielded twist-pair cables.
D-sub 25-pin (male)