Detection fault module SM321

Hello all,

I need some help in this point, i have in my project some modules of I/O, is possible improve some code to detect witch module is is fault and what kind of fault, i think is possible do this using O B 82 and using some simens blocks, but i'm not sure about blocks i have to use.

Thanks

Tanks fot your replay, i hane one more question is it possible to read out following diagnostic of IO module:

CPU-315-2DP; 315-2AG10-0AB0

This ara the module i´m using
1. DI 32XDC24 : 6ES7 321-1BL00-0AA0
2. 8DIX8 DX : 6ES7 327-1BH00-0AB0

Regards

AAguiar