9 Using Expansion Units and Expansion I/O Units
9-54
CP1E CPU Unit Hardware User’s Manual(W479)
Additional Information
• Unused bits in the CompoBus/S I/O Link Unit’s output words can be used as work bits.
• Unused bits in input word cannot be used as work bits.
(1) Determining Node Number
• The CompoBus/S I/O Link Unit is a Slave Unit with 8 input bits and 8 output bits. The
node number setting is made using the DIP switch; the inputs and outputs share the
same node number.
• The range of possible node number settings is determined by the type of PLC the Master
Unit is mounted to and the settings on the Master Unit.
For details, refer to the
CompoBus/S Operation Manual
(Cat. No. W266).
(2) Making DIP Switch Settings
Use the DIP switch to set the CompoBus/S I/O Link Unit’s node number, communications
mode, and the status of output data when a communications error occurs.
Precautions for Correct UsePrecautions for Correct Use
Always turn OFF the power supply before changing the DIP switch settings.
2
Determine the node number and making DIP switch settings.
Pin labels Contents
1
2
4
8
DR
HOLD
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
1 = ON, 0 = OFF
ON
OFF
ON
OFF
Long-distance communications mode *
High-speed communications mode
Retain inputs after a communications error.
Clear inputs after a communications error.
ON
1
2
4
8
DR
HOLD
SW1
8 4 2 1
0 0 0 0
0 0 0 1
0 0 1 0
0 0 1 1
0 1 0 0
0 1 0 1
0 1 1 0
0 1 1 1
1 0 0 0
1 0 0 1
1 0 1 0
1 0 1 1
1 1 0 0
1 1 0 1
1 1 1 0
1 1 1 1
NODE NUMBER
SW1
Node Number
Setting
* The long-distance communications mode
can be used only when one of the following
Master Units is connected: C200HW-
SRM21-V1, CQM1-SRM21-V1, or SRM1-
C0@-V2.
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