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from Device and Cache
August 2, 2016
11:19, EEST
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jura
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March 14, 2014
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Hello.
Pressure:=TPsInteger.Create(nil);
Pressure.Value:= 21;
IDX := MyOPCProvider.AddressSpace.AddVariable(RootIndex, Pressure, ‘Pr’);

After adding the variable Pressure into the address space
how to determine event what OPC client reads the associated Item ,
and how to determine what is the required reading from the Cache or from the Device ?

August 3, 2016
15:21, EEST
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Heikki Tahvanainen
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April 17, 2013
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Hello,

Thank you for the question. OPC DA doesn’t really make it possible to know which OPC Client is making the read.

There’s no support for Device read at the moment, so you cannot react to that in the application.

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