I have observed that , if we stop the communicator service, and keep the server on… then also at web display we get last values at current column display …
if we switch off the server … all values goes off (it is as expected).. but the previous case it looked strange.
If Communicator is off, the values become undefined in 5 minutes by default. You can change this time span by the parameter “Unreliable on inactivity” in SCADA-Server.
I have tried it… it changes the colour of current data values … but still it shows the values (this can be confusing sonme time)… also if we click for charts… colour of the main graph is matching so one can not distinguish between true and false data. it creats confusion.
I think unreliable values should not come in graph or should come with different colour…
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