Mitsubishi Electric MELSEC iQ-R Series User Manual page 113

When the NS LED is flashing in red
When the NS LED is flashing in red, check the following.
Check item
Is the EtherNet/IP device connected correctly?
When the SD/RD LED does not turn on during data communication
When the SD/RD LED does not turn on during data communication, check the following.
Check item
Is the ERR LED on or flashing?
Is the Ethernet cable connected correctly?
Are the parameter settings correct?
Are there any errors in the program?
If the above actions do not solve the problem, perform the hardware test to check for RJ71EIP91 failure. ( Page 119
Hardware Test)
Action
• Check whether the operating status of the EtherNet/IP device is normal.
• Check for errors in the line status.
• The line may be busy, so retry at a later time.
Action
Take the actions displayed in the module diagnostics. ( Page 112
Checking the Module Status)
• Connect the Ethernet cable again.
• Perform a PING test to check the line status. ( Page 118 PING test)
Revise the following items with EtherNet/IP Configuration Tool.
• Model and name of the connected EtherNet/IP device
• IP address of the connected EtherNet/IP device
• Version of the registered EDS file
• Check that 'EtherNet/IP communication start request' (Y10) is on.
• Check and correct the data communication program.
5 TROUBLESHOOTING
111
5.1 Checking with LEDs
5