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