Omron OMNUC W Series Manual page 249

9 Troubleshooting
9
A.E9
A.E9: DeviceNet Busoff Error
Display and Outputs
Alarm Outputs
Alarm Code Outputs
ALO1 ALO2
OFF ON
Note OFF: Output transistor is OFF (alarm state). ON: Output transistor is ON.
Status and Remedy for Alarm
Busoff error
Cause
A There is no terminating resistance in the
network.
B There is noise in network wiring.
C
The baud rate is incorrect.
A.EA
A.EA: Servo Driver System Error
Display and Outputs
Alarm Outputs
Alarm Code Outputs
ALO1 ALO2
OFF ON
Note OFF: Output transistor is OFF (alarm state). ON: Output transistor is ON.
Status and Remedy for Alarm
At power ON
Cause
A The Servo Driver is defective.
9-38
ALM Output
ALO3
ON OFF
A, B, C
Check that a terminator is mounted to both
ends of the DeviceNet network.
Separate the network wiring from the power
supply circuit.
Check the communications settings of the
rotary switches mounted on the front panel
of the DeviceNet Unit.
ALM Output
ALO3
ON OFF
A
Replace the Servo Driver.
Remedy
Remedy