Background
There are some industry segments (such as power) which require that when communication with RTU/PAC/PLC is broken, instead of showing the #BAD #COM or #PEND, display the last know good value instead.
Resolution
In this sample project, we show how to make use of Tag Extension for such matters.
Disclaimer
The views and opinions expressed in this article are those of the author(s) and do not necessarily reflect the official policy or position of Schneider Electric.
