S5-135

Hello:

I´m working with a S5 135, CPU 928 B from siemens. When loading the Plc program and after setting to run mode the plc shows me a status error "ADF" That is related with I/O Addressing.

Logically I can´t see the inputs from slots 1 and 2, but the I/O modules are OK, all of them. This makes me think is the rack.

Recently I´ve change the rack for a new one, but I have the same trouble.

Hope, some one could help me with this headeache.

Thanks.

I Believe that on a 135 rack modules they have dip switches for addressing, check these are correct.

Thanks a lot

I´ve done tha but I´ll check it again.
It appears to be a trouble with the PS, we´ll be on that¡