TiOPCItem.AutoConnect

TiOPCItem

Used to specify whether or not the OPC Item Auto-Connects for this OPC Item.

property
AutoConnect : Boolean;

Description

Use AutoConnect to inspect whether or not an OPC connection is automatically created for this OPC Item when the component is created.

When AutoConnect is TRUE, when the component is instantiated, a connection to the OPC server for this item is automatically made. When AutoConnect is FALSE, you must call Activate to manually create a connection to the OPC Server.

AutoConnect causes a connection to be made to the OPC server anytime streaming is done with the component. If you use runtime property editors for our components and the end-user changes properties and clicks on OK or Apply, the component will re-stream in all properties and reconnect to the OPC Server if AutoConnect is set to TRUE.

If you need complete control over when the connections are made and disconnected between the Component and the OPC Server, set AutoConnect to FALSE and then use the Activate and Deactivate procedures.

Example

Delphi

iComponent.OPCItem[0].AutoConnect := True; //Sets the 1st OPC Item's AutoConnect Property

Value := iComponent.OPCItem[0].AutoConnect; //Gets the 1st OPC Item's AutoConnect Property

C++ Builder

iComponent->OPCItem[0]->AutoConnect = True; //Sets the 1st OPC Item's AutoConnect Property

Value = iComponent->OPCItem[0]->AutoConnect; //Gets the 1st OPC Item's AutoConnect Property

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