Host Engineering Forum

General Category => Do-more CPUs and Do-more Designer Software => Topic started by: JoshChapman on January 15, 2021, 02:38:49 PM

Title: How to Turn Off HMI Screen with PLC?
Post by: JoshChapman on January 15, 2021, 02:38:49 PM

Im trying to turn off my C-More HMI screen after a timeout period, like a screen saver. I don't want the screen to be on all day if no one is using it.  I cant find a tutorial that helps with this. It seems like it could be a built in feature in the Cmore. Or the PLC could turn on/off a bit that would signal the Cmore to turn off the screen.

Does anyone know how to do that?

Title: Re: How to Turn Off HMI Screen with PLC?
Post by: franji1 on January 15, 2021, 03:11:20 PM

Not sure the PLC can know when the C-more would be inactive or for how long.

The C-more itself should know.

Probably better to ask this question on ADC's Community website (C-more was not developed by Host Engineering).
https://community.automationdirect.com  There is a special area for HMI/Industrial Monitors

Title: Re: How to Turn Off HMI Screen with PLC?
Post by: akahammer on January 15, 2021, 03:45:35 PM

In Cmore software Go to Setup and Panel manager then general section you can set time till screen saver kicks on. The value of 0 is off or no screen saver.  They also have an object to do same as in a button you put on screen. Also internal tags are present for sys inactive time, I have not used this but have seen it. in cmore software open tag name database go to tag name Colum click top to order arrange tags look at internal, I don't known about a bit to turn on screen saver. Like they said put thread on Automation direct site maybe someone will known.
Hope that helps.

Title: Re: How to Turn Off HMI Screen with PLC?
Post by: Bolt on January 15, 2021, 04:54:37 PM

If the assumption that screen number not changing means HMI not being used, you can run a timer on the current screen number not changing on the PLC.  When the timer goes true, you can enable the screensaver.  I've done that on a C-more Micro, I'm not at my computer with my C-more projects, I'll check what I did there later.

Title: Re: How to Turn Off HMI Screen with PLC?
Post by: Bolt on January 15, 2021, 10:17:41 PM

In the C-more, you can create tags in Setup Menu, PLC <-> Panel, and in the Do-more create a simple rung as shown.

Title: Re: How to Turn Off HMI Screen with PLC?
Post by: akahammer on January 18, 2021, 09:20:25 AM

+1 Bolt

I did not know about that bit hidden away, I had looked for it in internal tags and never found it, I use built in screen saver timer very easy, easy is good sometimes, LOL. It's nice to learn something new, I thought you should be able to do that just apparently never needed it done that way and never been on that screen actually any of the 3 screens under PLC<->Panel.

Thanks nice to add thinks to your bag of tricks.