Table of Contents
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4. Troubleshooting (DeviceNet)
4.1.2.1 Master: Communication Error
Green
Light ON
4.1.2.1.1 Slave: Not Operating
♦ Process Flowchart
Check
No Problem
82
Master Unit LED
MS
NS
Red Light
Communication
Blinking
error
Master LED Condition
Absent Slave LED Condition
1
Is power supplied to slaves?
Yes
Replace the unit.
Error
- Slave disconnected from the network
(Remote I/O communication error)
- Slave not added to the network
(Scan list collation error)
- Communications power supply OFF
(Error detection after the communication
establishment)
Green Light ON
Light OFF
No
Supply power.
No
Is MS LED light ON?
Yes
Normal communication?
Yes
Finish
Description
MS
NS
Red Light Blinking
Light OFF
No
See other errors.
Fieldbus I/O Rev.6
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Table of Contents
Troubleshooting
