This property is used to control the generation of the OnTagRead event, which occurs in the I/O Driver that contains this I/O Tag. If this Tag's EnableDriverEvent property is set to True, then this Tag's OnTagRead event is enabled. Otherwise, it is disabled. 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 I/O Tag.