User`s manual

1-17
Wiring for Communication
Never place the communication cable with electric circuits.
Never bundle these cables together with other wires in ducts or electric boxes using cord locks. Although it
is tempting to bundle all the cables neatly together, this does not necessarily lead to a noise-resistant
configuration.
It is recommended that the communication cable be independently wired.
In Case of RS-232C Communication
In case of RS-232C, SD and SG, and RD and SG form a pair.
Connect the shielded cable to pin No. 1 or the connector case cover.
In Case of RS-422 Communication
In case of RS-422, +SD and -SD, and +RD and -RD form a pair.
Use SG if possible.
Connect the shielded cable to pin No. 1 or the connector case cover.
Use terminal converter ZM-1TC which is the optional equipment in case of using terminal blocks in RS-
422/485 connection.
Specify terminal resistance by the dip switches on ZM-62E. (Refer to page 1-29.)
Shielded cable
Signal
FG
Pin No.
+RD
-RD
+SD
-SD
1
24
25
12
13
To the RS-422 port
of the PLC link unit
SG 7
ZM-62E (CN1)
Send data (-)
Send data (+)
Receive data (-)
Receive data (+)
SG
Signal
FG
Pin No.
SD
RD
RS
CS
1
2
3
4
5
Shielded cable
To the RS-232C port
of the PLC link unit
SG 7
Receive data
SG
SG
Send data
ZM-62E (CN1)
Communication cable
Power cable and control cable
Cord lock
Wiring duct
Power cable and control cable
Communication cable
1 Serial Connector (CN1)