dpConnect keeps calling callback function

[Mgiacome]

Hi

I've noticed that dpConnect() keeps calling the callback function, even if the value of the input parameters do not change.

dpConnect("callbackFunction", dp1:_online.._value)

If I put a DebugN inside the callbackFunction, I keep seeing in the log that the function is called.

dp input parameters have an OPCUA subscription as pheriphery address. But their value don't change.

There's something I'm missing ?

Thank you

[kilianvp]

https://www.winccoa.com/documentation/W ... =dpconnect

you need to set answer parameter to false

[gschijndel]

Perhaps the same value is written multiple times. Are other attributes (like the timestamp) changing?

[leoknipp]

The "wantsAnswer" parameter only defines if the work function is triggered immediately when doing the dpConnect().
During runtime it has no effect if the parameter is set to to true/false.

Best Regards
Leopold Knipp
Senior Support Specialist

[kilianvp]

Oh, sorry. I misunderstood Mgiacome's problem.

[Mgiacome]

Thanks all, the cause was the low level comparison setting unchecked inside the pheriphery address of the datapoint .... sorry