Omron C200H CPU 01 problem

[Rodney]

I was called to one of my customer this morning who has one of tha above PLC,s. The problem is that there is a remote rack and  it is not talking to the main rack and the PLC is not in run mode. There is also DA001 analog module in the remote rack which was in error. I exchanged both the RM201 and RT201 modules the comms is still not working but the analog module is now in run. Both the Rm201 and the R201 are in alarm. The alarm is described as a duplex bus or intelligent I/O unit. The cable between the two units buses out ok.

any help on this would be appreciated 

 

thanks 

Rodney

 

[Jay Anthony]

Check to see if the terminator switch is set to on for the RT201.

Check the manual for error light possibilities.

W120-E1-08 Sysbus Wired Remote IO.pdf

[Rodney]

Thanks  Jay

but I have done a like for like replacement including the dip switch settings

thanks

Rodney

 

 

 

[Jay Anthony]

Can you do a description of the condition of the indicator lights on both RM201 and RT201? (Lit, Flashing, Off)

[Rodney]

Thanks for your posts. Jay

The RT201 has only the power indicator light. The RM201 has flashing fault light has does the CPU.

Rodney

[Jay Anthony]

Quote

The alarm is described as a duplex bus or intelligent I/O unit.

What is the error code number in the CPU?

[Rodney]

I have not seen an error code number only the description above. Any help in resolving this would be greatly appreciated.

Rodney

[Rodney]

Just been to site and checked again using CX  Programmmer and I could see a code number. The error code number is 0x00D0.

Rodney

 

Edited December 31, 2016 by Rodney

[Jay Anthony]

Error has occurred in PC Link Unit, Remote I/O Master Unit, between a Host Link, SYSMAC LINK,or SYSMAC NET Link Unit and the CPU, or in refresh between Special I/O Unit and the CPU.  Determine the unit number of the Unit which caused the error (AR 00), correct the error, and toggle the appropriate Restart Bit in AR 01, SR 250, or SR 252. If the Unit does not restart, replace it.

Special I/O Unit and the CPU = DA001

[Rodney]

As mentioned in my original post the DA001 was in fault and when I replaced the RM201 and the RT201 the DA001 went into run.

Jay

Do I toggle the restart bits you mentioned the address I am writing to in the program is 100 if that helps

In the remote rack there the following l/O left to right

input module address 60

output module address 61

output module address 62

empy slot

DA001

 

Edited January 1, 2017 by Rodney

[BobB]

I reckon it is time to replace the lot - this old stuff has not been supported for years and cannot even be repaired.

Time to move on to a CJ2M - I would have done that years ago.