TiVCLComponent.OnNewOPCData
TiVCLComponent See Also
Occurs when data from an attached OPC server is sent to the control.
type TIndexObjectEvent = procedure(Index: Integer) of object;
property OnNewOPCData : TIndexObjectEvent;
Description
Use OnNewOPCData to specify actions to perform whevever new OPC data is sent
to the control. This event is in contrast to the standard events on the
component (for example, the OnPositionChange event for controls that have a Position
property tied to an OPC Server) which only fire when OPC data changes the property on the component.
The OnNewOPCData event will fire everytime OPC data is received by the component, regardless or whether the data is
different than previously received values.
Note: for the Plot Pack components, the Index refers to the Channel Index. For
all other components, the Index refers to the OPC Item that has been added to the
control.
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