Dynamically change I/O tag references at run time

The InTouch HMI uses dynamic references to view data points whose values are only needed temporarily, such as in diagnostic applications. Using Dynamic Reference Addressing allows you to address multiple data sources with a single tag.

You can use several methods to dynamically reference multiple data sources with a single tag:

• Assign different Access Name characteristics with the .Reference dotfield of an I/O tag

• Use the IOSetItem() script function to set an I/O tag’s .Reference dotfield

• Use the IOSetAccessName() script function to change the characteristics of an Access Name during run time