Object ExtOpcDa

An extension of the PmVar variable of the PmaData object for the connection to the OPC DA communication. The data item is a client connected to OPC server.
Format of saving the data extension as string:

The contents of complete data extension (all configurators) can be saved as a single string. See Format of saving the data extension as string.


- Id: see "Data extension identifier" configurator
- PmaObject: see "Target object (PmaOpcDaClientGroup)" configurator
- ItemId: see "ItemID" configurator
- AccessPath: see "AccessPath" configurator
- K;Q;D: see "Value recalculation" configurator
This data extension registrates itself automatically into the PmaOpcDaClientGroup object after starting the application. Therefore it is not needed to create the requested item on the "PmaOpcDaClientGroup > Data" page! If all items for the PmaOpcDaClientGroup object are of the "Data extension" type, then the "PmaOpcDaClientGroup > Data" page may remain empty.
Properties and methods:
AccessPath Access path to the variable in the OPC server
ItemId Text address/identifier of the variable in the OPC server.
TimeStamp Time stamp of the variable
Var Making available the PmVar object
Configuration windows:
ExtOpcDa Data extension configuration

Pm8.03.00: Created
PROMOTIC 9.0.9 SCADA system documentation - MICROSYS, spol. s r.o.

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