Omron PLc CQM1H-CPU51 ON FATAL ERROR 0*00C0 (IO bus error).

[ANTIA, Yakiseabasi 0]

Hello guys, i would appreciate your help ASAP. I have an Omron PLc CQM1H-CPU51 ON FATAL ERROR 0*00C0 (IO bus error).

First, Im using this CPU51 to replace CQM1H-CPU 21 which is on I/O Unit over fatal error 0*00E1. I have changed the cpu type to 51 and transfered the program sucessfully with no errors, I have also transfered the memory area settings to CPU51. what other configuration settings do i need to do?

I followed the instructions in the manual and:

1) io unit end cover is well connected, and even replaced with  another, problem persists;

2) PLC has no inner boards;

3) No expansion block

4) Power supply is okay

5)I/O control unit or I/O interface unit not in use

6)Checking through the memory area, for AR 2400 to AR 2415 for the error code, the address here stops at AR 27. How can i view AR 2400 etc?

Edited 3 Jul 2020 by ANTIA, Yakiseabasi

[BobB 58]

It is dead! The bus has a problem. Replace it with a CJ2M.

[ANTIA, Yakiseabasi 0]

8 hours ago, BobB said:

It is dead! The bus has a problem. Replace it with a CJ2M.

Thank you BobB.