Mitsubishi Electric GOT2000 Series Connection Manual page 199

(2) Precautions when preparing a cable
(a) Cable length
The length of RS-422 cable 2) must be 300m or less.
The maximum length of RS-422 cable 1) differs according to the specifications of the YASKAWA PLC side.
For details, refer to the YASKAWA PLC user's manual.
(b) GOT side connector
For the GOT side connector, refer to the following.
➠ 1.4.1GOT connector specifications
(c) YASKAWA PLC side connector
Use the connector compatible with the YASKAWA PLC side module.
For details, refer to the YASKAWA PLC user's manual.
(3) Connecting terminating resistors
(a) GOT side
When connecting a PLC to the GOT, a terminating resistor must be connected to the GOT.
• For GT27, GT25(Except GT2505-V), GT23
Set the terminating resistor setting switch of the GOT main unit to "Disable".
• For GT2505-V, GT21
Set the terminating resistor selector to "330Ω".
• For GS21
Since the terminating resistor is fixed to 330 Ω, no setting is required for the terminating resistor.
For the procedure to set the terminating resistor, refer to the following.
➠ 1.4.3Terminating resistors of GOT
(b) YASKAWA PLC side
When connecting a YASKAWA PLC to a GOT, connect a terminating resistor to the YASKAWA PLC if required.
➠ YASKAWA PLC user's Manual
6.2 Serial Connection
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