Instruction manual

5
2. MITSUBISHI PLC 5-21
Connection to PLCs
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 ZM-300 series and A/QnA series CPU to avoid
noise problems.
• Ferrite cores are order product.
• 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.
ZM-300 series
Ferrite core
A/QnA series
CPU
ZM-300 (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)