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Shield wire
Connect only one end of the shield wire to the FG terminal so that current cannot flow to the shield wire.
If both ends of the shield wire are connected to the FG terminal, the circuit will be closed between the
shield wire and the ground. As a result, current will run through the shield wire, and this may cause noise.
Be sure to ground the FG terminal.
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 to multiple peripheral
devices. The terminator prevents signal reflection and disturbance.
It is not necessary to connect a terminator to the communication line because the KT4R has built-in pull-up
and pull-down resistors.
For communication between the PLC and KT4R, terminators are not necessary. However, to reduce the risk
of reflection, connect a terminator to the PLC side.
Use a terminator of 120
or more.
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com
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