Omron Sysmac C20 - Problem

[Corra_in_cerca_di_in]

I have a problem with a machine equipped with OMRON SYSMAC C20 - 3G2C7 - CPU54E.
The PLC is in ERROR and I have no manual of the equipment. Someone can help me? I need the machine to work :-(
HEEEELPP!!!

 

[IO_Rack]

Try this.

C20K, C28K, C40K , C60K

 

[IO_Rack]

I may be mistaken. Check out this post. There is more info on the different model numbers. And pictures.