Mitsubishi Electric GOT2000 Series Connection Manual page 990

■3. Connecting terminating resistors
When connecting a Serial Multi-Drop Connection Unit to the GOT, a terminating resistor must be connected to the
GOT.
(1) For GT27, GT25(Except GT2505-V), GT23
Set the terminating resistor setting switch of the GOT main unit to "Disable".
(2) For GT2505-V, GT21
Set the terminating resistor selector.
For the procedure to set the terminating resistor, refer to the following.
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19.4 Connection Diagram
1.4.3 Terminating resistors of GOT