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2.7 Interface
2.7.1 Serial Interface
The pin assignment and the shape of plug/socket connector of GP-477RE are
different from those of GP-4501T/TW.
To know the details about them, see [4.2 Shapes of COM ports] and [4.3 Signals of
COM ports].
Because of it, the existing PLC connection cables cannot be used as they are. If you
use the existing connection cables, see [4.6 Cable Diagram at the time of
replacement].
2.7.2 Auxiliary I/O Interface (AUX)
GP-4501T/TW is not equipped with Auxiliary I/O Feature. External Reset Input and
3 Outputs (RUN Output, System Alarm Output, and External Buzzer Output) that
can be used for GP-477RE cannot be used.
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