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5.9 Wiring Example of Serial Communication (C5 option)
When the Serial Communication (C5 option) is added, a modular jack is equipped at the bottom of the
controller.
Wiring example using the IF-400 communication converter
•
D-sub 9-pin Connector
(Fig. 5.9-1)
•
D-sub 25-pin Connector
(Fig. 5.9-2)
Shielded Wire
Connect only one end of the shielded wire so that current cannot flow to the shielded wire. If both ends
of the shielded wire are connected, the circuit will be closed between the shielded wire and the ground.
As a result, current will run through the shielded wire and this may cause noise.
Recommended cable: OTSC-VB 2PX0.5SQ (made by Onamba Co., Ltd.) or equivalent (Use a twisted
pair cable.)
Terminator (Terminal Resistor)
The terminator is mounted at the end of the wire when connecting a personal computer with multiple
peripheral devices. The terminator prevents signal reflection and disturbance.
Do not connect the terminator with the communication line because the WCL-13A has built-in pull-up
and pull-down resistors instead of a terminator.
Host computer
D-sub 9-pin connector
Shielded
wire
FG
WCL-13A (Max 31 units)
IF-400 (sold
separately)
CDD or CPP (sold separately)
Bottom of the
IF-400, WCL-13A
CDD or CPP (sold separately)
IF-400 (sold
separately)
WCL-13A (Max 31 units)
Host computer
D-sub 25-pin connector
Shielded
wire