OnRead()

Occurs when an I/O Tag reading is performed by the I/O Driver. Use the OnRead event to perform some operation right after some data is modified in the I/O Tag, such as the Value, Quality, or TimeStamp properties. This event is generated by a background reading. Example:

Sub CommTag1_OnRead()
  ' When reading the tag, assign its value
  ' to the InternalTag1 tag.
  Set obj = Application.GetObject("DataServer1.InternalTag1")
  obj = Value ' CommTag1 Value
End Sub