Your comments

For this project, the display page might not change even though the system is in use and the menu system will not be accessible without a pin code. I follow the idea though. I will look for some critical part and watch it. In my case, I can watch a motor signal or a valve solenoid signal .

Yes you can move this to a public forum. Thanks for the help.

Hi. Thanks for the reply. I haven't used static variables yet, so I'll have to give it a try. Yes, you can move this to a public forum.

I have a similar need in a project I am working on. I am looking forward to this feature.