Kees wrote on May 16^th, 2020 at 9:37pm:

In short, what is the difference between turning the knob to change the IND and writing the Lvar of the IND directly to change it.

The status of the indicator depends on several conditions, not only from the knob.
What will happen if the MCP panel loses electrical power? And, after that you will set some value for the indicator.
Right. It will show the value without electricity.

I don't think this is the expected result