Hello,
there are many applications/devices around promoting that they can read an S7-400 without any modification to be done on the PLC.
This great as I could consume much more data through them (and investment is lower than going 100% through Siemens what is critical doing a data analytics upgrade on control system).
They say they can read any value (DB, in, -output etc. ).
My question is, which area I have to be queried to get the information when a signal is fired.
I want to read the timestamp of the alarm messages as it is usually shown in WinCC.
thank you
stefan
there are many applications/devices around promoting that they can read an S7-400 without any modification to be done on the PLC.
This great as I could consume much more data through them (and investment is lower than going 100% through Siemens what is critical doing a data analytics upgrade on control system).
They say they can read any value (DB, in, -output etc. ).
My question is, which area I have to be queried to get the information when a signal is fired.
I want to read the timestamp of the alarm messages as it is usually shown in WinCC.
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thank you
stefan