Omron DRT2 Series Operation Manual page 91

Remote I/O Terminals with Transistors
Mounting Expansion Units
1,2,3...
Supplying I/O Power
74
Basic Unit Expansion Unit
DRT2-OD16 None
XWT-ID08-(1)
XWT-OD08-(1)
XWT-ID16-(1)
XWT-OD16-(1)
1. Remove the cover from the right side of the Basic Unit.
2. Join the connector of the Expansion Unit directly to the connector of the
Basic Unit.
3. Insert the connector of the Expansion Unit securely into the connector of
the Basic Unit.
When supplying I/O power to an Expansion Unit in a combination of two Input
Units (Basic Input Unit and Expansion Input Unit), I/O power is supplied to the
Basic Unit only.
For combinations of a Basic Input Unit with an Expansion Output Unit, a Basic
Output Unit with an Expansion Input Unit, or two Output Units (Basic Output
Unit and Expansion Output Unit), the I/O power must be supplied to both the
Basic Unit and the Expansion Unit.
Refer to the following table to determine the correct wiring for the Unit combi-
nation being used.
Device combination
Basic Input Unit (IN) + Expansion
Input Unit (IN):
Example: DRT2-ID16+XWT-ID16
Basic Input Unit (IN) + Expansion
Output Unit (OUT):
Example: DRT2-ID16+XWT-OD16
Inputs
0
8
0
16
0
I/O power supply to Expansion Unit
Not required. (I/O power supply shared with
Basic Unit.)
Required. (I/O power supply required for both
Units.)
Section 5-3
Outputs
16
16
24
16
32