Omron CP1H-X40D - Page 513

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CompoBus/S I/O Link Units Section 7-6
LED Indicators
CP1W-SRT21 CompoBus/S I/O Link Unit
(1) CompoBus/S Terminals
The following CompoBus/S terminals are provided: CompoBus/S com-
munications data high/low terminals, NC terminals for communications
power supply plus (+) and minus (-), and an NC terminal. (Power is sup-
plied internally for this Unit, so the NC terminals for communications
power supply can be used as relay terminals.)
(2) DIP Switch
Used to specify the node number for the CompoBus/S I/O Link Unit.
(Refer to the following table.)
Indicator Name Color Meaning
COMM Communications
Indicator
Yellow ON: Communications in progress.
OFF: Communications stopped or error
has occurred.
ERR Error indicator Red ON: A communications error has
occurred.
OFF: Indicates normal communications
or stand-by.
BD NC(BS- ) NC
BD NC( BS+)
S
COMM
ERR
ON
132
4
5
6
No.
SRT21
EXP
(1) CompoBus/S Terminals
(Terminal block is not removable)
(3) LED Indicators
(4) Expansion I/O Connecting Cable
(5) Expansion Connector
(2) DIP Switch
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.