Mitsubishi Electric MELIPC MI5000 Series User Manual page 205

The LEDs of CC-Link IE Field Network Connector are on or off.
If the L ER LED is on
Check item
Does the used Ethernet cable meet specifications?
Is the distance between stations within specifications?
Is the Ethernet cable broken?
Is the switching hub being used operating correctly?
Are there any sources of noise around the product, the stations, and wiring?
If the LINK LED is off
Check item
Does the used Ethernet cable meet specifications?
Is the distance between stations within specifications?
Is the installation situation (bend radius) within specifications?
Is the Ethernet cable broken?
Is the switching hub being used operating correctly?
Is the other station connected to the product operating correctly?
Corrective action
Use Ethernet cables that meet the following standards.
Ensure the distance between stations is within specifications.
Replace the Ethernet cable.
• Check that a switching hub that meets specifications is being used.
• Turn the switching hub power supply OFF/ON, and restart the switching
hub.
Change the locations and wiring of modules.
Corrective action
Use Ethernet cables that meet the following standards.
Ensure the distance between stations is within specifications.
Set the bend radius within specifications.
Replace the Ethernet cable.
• Check that a switching hub that meets specifications is being used.
• Turn the switching hub power supply OFF/ON, and restart the switching
hub.
• Through a CC-Link IE Field diagnosis, check that other stations are data
linked.
• Confirm other station module operating status.
Appendix 1 Troubleshooting by Symptom
A
APPX
203