Ab 1794-ib16d Rio

[BOBN]

I am using a SLC-503, 1747-SN, 1794-ASB(E) AND A 1794-IB16D MODULE. THE COMMUNICATION IS FINE. THE PROBLEM I AM HAVING IS THE MODULE IS A DIAGNOSTIC MODEL AND I CAN NOT FIND WHERE IT PLACES THE MODULE ERROR(OPEN INPUT/SHORTED INPUT/REVERSE VOLTAGE).

ANY HELP WOULD BE GREATLY APPRECIATED.

 

[cornbread]

The diagnostics are read by a 2nd word.

see page 28
http://literature.rockwellautomation.com/idc/groups/literature/documents/um/1794-um061_-en-p.pdf