is there way review digital input/digital output led light history of siemens s7-1200 plc?
if so, through web portal or through simatic , can point me in direction of find such information?
thanks - save me site visit if possible in way.
there no built in di/dq history s7-1200.
however, if have form of tcp/ip connection, can done quite easily.
when call outputs in main program, use tag based calling system. reference tag, , have tag's output be:
- the required dq
- a tcp/ip message saying tag has risen or fallen.
for inputs, send message on rise , fall of each input
it easiest hold di/dq history on server hosting tcp/ip connection rather plc itself.
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