Omron CPM1A User Manual

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3. LED Indicators
These indicators show the status of CompoBus/S communications.
Indicator Status Meaning
COMM
(ll )
ON Communications in progress.
(yellow)
OFF Communications error or stopped.
ERR
(d)
ON A communications error has occurred.
(red)
OFF Indicates normal or no communications.
4. Expansion I/O Unit Connecting Cable
Connects the CompoBus/S I/O Link Unit to the Expansion Connector on the
PC’s CPU Unit or another Expansion Unit.
Caution Do not touch the Expansion I/O Unit Connecting Cable while the power is being
supplied in order to prevent any malfunction due to static electricity.
5. Expansion Connector
Connects to another Expansion Unit (Expansion I/O Unit, Analog I/O Unit, or
CompoBus/S I/O Link Unit). Up to 3 Expansion Units can be connected to a
CPU Unit.
2-2-6 DeviceNet I/O Link Unit Components
The following DeviceNet I/O Link Unit is available: CPM1A-DRT21.
1. DeviceNet communications terminals
5. Expansion I/O Unit Connecting Cable
2. Rotary switches
6. Expansion connector
4. LED indicators
3. DIP switches
1, 2, 3... 1. DeviceNet Communications Terminals
Connect these terminals to the DeviceNet transmission path. Use either the
enclosed connector or another connector for wiring.
2. Rotary Switches (SW2 and SW3)
The rotary switches are used to set the DeviceNet node address of the Unit
between 00 and 64. (Do not set values 64 to 99.)
3. DIP Switch (SW1)
The DIP switch sets the baud rate and determines whether or not the out-
puts will be cleared in the event of a communications error.
Unit Components
Section 2-2

Omron CPM1A Specifications

General

Brand	Omron
Model	CPM1A
Category	Controller
Language	English