Mitsubishi Electric MELSEC iQ-F FX5 Series User Manual page 142

When the L ER LED turns on
When the L ER LED turns on, check the following.
Check item
Are the Ethernet cables used normally?
Is the switching hub used operating normally?
Is "Module Operation Mode" under "Application Settings" of the master station
set to "Online"?
Is there any source of noise near the module or cables?
When the LINK LED turns off
When the LINK LED turns off, check the following.
Check item
Do the used Ethernet cables conform to the Ethernet standard?
Does the station-to-station distance meet the specifications?
Does the cabling condition (bending radius) meet the specifications?
Is any Ethernet cable disconnected?
Is the switching hub used operating normally?
Are other stations connected to the FX5-CCLGN-MS operating normally?
Is the communication speed of connected devices 1Gbps?
If the above actions do not solve the problem, perform the module communication test to check for hardware failure. (
Page 143 Module communication test)
10 TROUBLESHOOTING
140
10.1 Checking with LED
Action
• Use an Ethernet cable that conforms to the standard. ( Page 16
Performance Specifications of CC-Link IE TSN)
• Set the station-to-station distance within range. ( Page 16 Performance
Specifications of CC-Link IE TSN)
• If the Ethernet cable is disconnected, reconnect it.
• Use a switching hub that conforms to the standard. ( Page 16
Performance Specifications of CC-Link IE TSN)
• Power off and on the switching hub.
Set "Module Operation Mode" under "Application Settings" of the master
station to "Online".
Change the location of the module or cables.
Action
Replace the cables with Ethernet cables which conform to the standard. (
Page 88 Ethernet cable)
Set the station-to-station distance within range. ( Page 16 Performance
Specifications of CC-Link IE TSN)
Refer to the manual for the Ethernet cable, and correct the bending radius.
Replace the Ethernet cable.
• Use a switching hub that conforms to the standard. ( Page 88
Switching hub)
• Power off and on the switching hub.
Take action by referring to the manual for the modules of other stations.
Connect devices which support a communication speed of 1Gbps.