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11 Expansion Unit
GX-series EtherCAT Slave Unit User’s Manual
11-1 Overview of the Expansion Unit
11
11-1-2 I/O Power Supply
The I/O power supply method when an Expansion Unit is connected differs in cases. In some cases I/O
power can be supplied only to Slave Unit.
In the other cases, it must be supplied to both the Slave Unit and the Expansion Unit.
These differences depend on the I/O combination. Refer to the following table for the correct supply.
11-1-2 I/O Power Supply
Expansion Unit
Slave Unit
Input Output
XWT-ID08(-1) XWT-ID16(-1) XWT-OD08(-1) XWT-OD16(-1)
Input
GX-ID1611 Power is supplied only to the Slave Unit.
Power supply to the Expansion Unit is not
required.
Power is supplied to both the Slave Unit
and Expansion Unit.
GX-ID1621
Output
GX-OD1611
Power is supplied to both the Slave Unit
and Expansion Unit.
Power is supplied to both the Slave Unit
and Expansion Unit.
GX-OD1621
GX-OC1601