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5-14 1. MITSUBISHI PLC
Wiring Diagram 8
According to our noise tests, the attachment of a ferrite core improves noise voltage by
650 to 900 V and aids in preventing communication errors.
• When connecting to the A/QnA series CPU directly, attach a ferrite core to the
communication cable between the V7 series and A/QnA series CPU to avoid noise
problems.
• Ferrite cores are optionally available. When ordering the ferrite core, state “GD-FC
(ID: 8 mm, OD: 20 mm).”
• In consideration of such noise problems, it is recommended that the standard type
link unit be used when the cable length of 15 m or longer is required.
V7 series
Ferrite core
A/QnA series
CPU
V7 (CN1)
PLC
D-sub 25pin(Male: )
FG
SG
+SD
-SD
+RD
-RD
1
7
12
13
24
25
RDA
SG
RDB
2
7
15
SDB 16
SDA 3
* Use shielded twist-pair cables.
D-sub 25-pin (male)