Method Using A Dedicated Instruction; Method Using I/O Signals; Appendix 12How To Turn Off Err Led - Mitsubishi Electric MELSEC iQ-RJ71EN71 User Manual

Appendix 12
How to Turn Off ERR LED
If an error occurs in communications with the external device, the ERR LED turns on. Even though the error cause is
eliminated, the ERR LED does not turn off. This section describes how to turn off the ERR LED.

Method using a dedicated instruction

The ERR LED can be turned off by the ERRCLEAR instruction. Availability for turning off the LED depends on the firmware
version of the RJ71EN71. ( Page 406 Added and Enhanced Functions)
For details on the ERRCLEAR instruction, refer to the following.
 MELSEC iQ-R Programming Manual (Module Dedicated Instructions)

Method using I/O signals

When the network type is "Q Compatible Ethernet", the ERR LED can be turned off by the ERR LED off request (Y17). (
Page 335 When the network type is "Q Compatible Ethernet")
A
APPX
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Appendix 12 How to Turn Off ERR LED