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11 Expansion Unit
11 - 2 GX-series EtherCAT Slave Unit User’s Manual
11-1 Overview of the Expansion Unit
One Expansion Unit can be added to a Digital I/O Slave Unit (GX-ID 1611/ID1621/
OD1611/OD1621/OC1601) (2-tier terminal block type16-point Slave Unit)
The use of Expansion Units enables flexible I/O capacity expansion.
This section explains how to connect the Expansion Unit and supply the unit power.
The Expansion Unit provides the same functions available through the Digital I/O Slave Unit.
For details, refer to "7-3 Functions of Digital I/O Slave Units" in page 7 - 7.
1
Remove the cover from the right side of the Digital I/O Slave Unit.
(1) Depress the catch and remove one side of the cover.
(2) Pull out the cover to remove it entirely.
2
Connect the Expansion Unit to the Slave Unit.
Press the Expansion Unit and Digital I/O Slave Unit together until they click into place with the
connectors properly mated.
Precautions for Correct Use
Always turn the main power OFF when connecting the Expansion Unit.
11-1-1 Connecting Expansion Units
(1)
(2)