This property is used to control the generation of OnTagRead events, which occur in the I/O Driver that contains this Block. If the EnableDriverEvent property of a Tag is set to True, the OnTagRead event generation is then enabled for that Tag. Otherwise, it does not occur. The three kinds of I/O Elements (I/O Tags, I/O Blocks, and Block Elements) can generate this event. The event occurs in the Driver, not in the Block.