Devicenet I/O Link Unit Components - Omron CPM1A Operation Manual

Unit Components
Caution
!

2-2-6 DeviceNet I/O Link Unit Components

5. Expansion I/O Unit Connecting Cable
1, 2, 3...
38
3. LED Indicators
These indicators show the status of CompoBus/S communications.
Indicator Status
COMM ON
( (yellow) ll )
OFF
ERR ON
( d) (red)
OFF
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.
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.
The following DeviceNet I/O Link Unit is available: CPM1A-DRT21.
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.
Meaning
Communications in progress.
Communications error or stopped.
A communications error has occurred.
Indicates normal or no communications.
2. Rotary switches
3. DIP switches
4. LED indicators
6. Expansion connector
1. DeviceNet communications terminals
Section 2-2