The value returned from the server may be different from the
value of the device to which the
DeadbandPercent for the
parent group is not zero. The value is also updated only periodically,
based on the parent group's
You determine the validity of
Value by checking
Quality property for the item.
Value is updated when you perform an asynchronous
or synchronous read operation or when a subscription callback occurs.
Any MATLAB® data type
The default value is an empty matrix (