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GN-9212 User Manual
Page 51 of (54)
G-series GN-9212 DeviceNet Rev. 1.01.docx
6.4. Trouble Shooting
How to diagnose by LED indicator
LED Status
Cause
Action
All LED turns off
- No power
- Check main power Cable
MOD LED is red
- Occurrence critical error in
firmware
- Contact Sales team and send
module for repair.
NET LED turns off
- Failure of communication with
Master
- Check main power for master
and communication cable.
NET LED flashed green
- Failure of exchanging data with
master
- Check status in software for
Master configuration.
NET LED is red
- Communication connecting lost
- Check BUS line cable for
connection with master.
- Check duplication address.
IOS LED turns off
- Device may not be powered.
- Check main power Cable
IOS LED flashes red
- Adapter has no expansion module
- Add one or more expansion
modules.
IOS LED is red
One or more expansion module
occurred in fault state.
- Detected invalid expansion module
ID.
- Overflowed Input/Output Size
- Too many expansion module
- Initializationfailure
- Communication failure.
- Changed expansion module
configuration.
- Mismatch vendor code between
adapter and expansion module.
- Use expansion slot up to 63.
- Compose that IO total size is not
excess.
- Check status of expansion IO
connection.
- Check the vendor code of
module.
Field Power LED turns off
- Field power is not supplied.
- Check main power Cable
- Contact Sales team and send
module for repair.
System Power LED turns
off
- System power is not supplied.
- Check main power Cable
- Contact Sales team and send
module for repair.