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• I/O Expansion for Word Slave Units
The number of I/O points for Word Slave Units in a CompoNet network can be increased by using
Expansion Units.
The following table shows the Slave Unit and Expansion Unit models that can be used.
Basic Unit
CRT1-ID16/ID16-1
CRT1-OD16/OD16-1
CRT1-ROS16/ROF16
• I/O Allocations when Expansion Units Are Used
Memory is allocated to a Basic Unit with an Expansion Unit in the same way as it would be allo-
cated to a Slave Unit of the same size as the combination of the sizes of the Basic Unit and the
Remote Input Registers (RWr) and remote output registers (RWw) of the Expansion Unit.
The following examples show the allocations when an Expansion Unit is connected to a Basic Unit
at node address m (m = 0, 1, 2,...).
Additional Information
For Slave Units with both inputs and outputs*1, the remote input register (RWr) node
address is used as the Slave Unit node address. Therefore, the Participation Flag and
Communications Error Flag correspond to the bits for the remote input register (RWr)
node address.
*1:
A Word Slave that combines a Basic Unit and Expansion Unit to provide both inputs and
outputs, or a CRT1B-MD Bit Slave, which provides both inputs and outputs.
CompoNet Gateway Unit for CC-Link Operation Manual
Expansion Unit
None
16
XWT-ID08/ID08-1
24
XWT-OD08/OD08-1
16
XWT-ID16/ID16-1
32
XWT-OD16/OD16-1
16
None
0
XWT-ID08/ID08-1
8
XWT-OD08/OD08-1
0
XWT-ID16/ID16-1
16
XWT-OD16/OD16-1
0
Remote I/O Communications
Inputs
Outputs
0
0
8
0
16
16
16
24
16
32
4
4 - 20
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Troubleshooting
