Omron CP1H-X40D - Page 516

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CompoBus/S I/O Link Units Section 7-6
(3) Unused bits in input word cannot be used as work bits.
Determining the Node
Number and Making DIP
Switch Settings
Node Number
• The CompoBus/S I/O Link Unit is a Slave Unit with 8 input bits and 8 out-
put 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
PC the Master Unit is mounted to and the settings on the Master Unit. For
details refer to the CompoBus/S Operation Manual.
DIP Switch Settings
Use the DIP switch to set the CompoBus/S I/O Link Unit’s node number, com-
munications mode, and the status of output data when a communications
error occurs.
Note Always turn OFF the power supply before changing the DIP switch settings.
Wiring the CompoBus/S
Communications Path
Wire the CompoBus/S communications path as shown in the following dia-
grams.
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 (See note.)
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
Note: 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.
BD L
BD H
Connect the CompoBus/S Communications Cable.
BD L
BD H
NC (BS+)
NC NC (BS−)
These terminals are not used. They can
however be used as communications power
supply relay terminals.