Hi ! i;m new, I would like to ask some problem.
In PLC (allen Bradley)control logix, i found problem that is no real 24V output in output module(1756 OB32_DC output) but output signal lamp is on. We have no spare module .so we can;t check with new module. I think module is ok. So, i would like to know why don;t come out real output in output module although plc output singnal lamp is on. And then which condition can happen like that .