Mitsubishi Electric GOT2000 Series Connection Manual page 297

■2. Precautions when preparing a cable
(1) Cable length
The length of the RS-422/485 cable must be 1200m or less.
(2) GOT side connector
For the GOT side connector, refer to the following.
➠ 1.4.1 GOT connector specifications
(3) MODBUS/RTU master equipment side connector
Use the connector compatible with the MODBUS/RTU master equipment side module.
For details, refer to the MODBUS/RTU master equipment user's manual.
■3. Connecting terminating resistors
(1) GOT side
When connecting a MODBUS/RTU master equipment to the GOT, a terminating resistor must be connected to the
GOT.
(a) For GT27, GT25, GT23
Set the terminating resistor using the terminating resistor setting switch.
(b) For GT21
Set the terminating resistor using the terminating resistor selector.
For the procedure to set the terminating resistor, refer to the following.
➠ 1.4.3 Terminating resistors of GOT
(2) MODBUS/RTU equipment side
When connecting a MODBUS/RTU master equipment to the GOT, a terminating resistor must be connected to the
MODBUS/RTU master equipment.
For details, refer to the MODBUS/RTU master equipment user's manual.
7.3 Connection Diagram
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