V18 - How do you make an IO-field display time based on the time set in a physical panel?

Hello.

In my panel I have set a specific time. I have an IO-field running in the panel with a script to get "new Date()". The time displayed does not match the time I have set in my panel. What script should I run instead?

Stefan Arcularius

Hi Figuren,

What does your script look like?

You should be aware that the Date() constructor returns a UTC based timestamp. To return a time value based on a different timezone, use toLocaleString(). In this case, you can specify a timezone in the options parameter. If no timezone is used in the options, the panel timezone is used.

Kind regards
Stefan

I have also tried

Stefan Arcularius

Hi Figuren,

I forgot to mention that the output format for the IO file in this case should be set to string or just left empty. In this case a script like

let myDate = new Date();

return myDate.toLocaleString();

will work (tested with V18, Update 1). For a date/time output format like '{D} {T}' you can use the following code:

let now = new Date();

return now.setTime(now.getTime() - now.getTimezoneOffset()*60*1000);

You should also note that changing the time zone in Control Panel will not affect runtime until you start runtime.

Kind regards
Stefan

Yes, this was the problem. I had {D}{T} as output format. Thanks!

Hello! I'm having an issue as well.

I'm running WinCC Unified on my own PC to test my project and I'm using this script:

let systemDate = Tags("System_Time").Write(new Date().toLocaleString('it', { timeZone: 'Europe/Rome' }));

return Tags("System_Time").Read();

Still, my IO Field keeps showing the date/time variable in this format:

6/4/2024 10:23:00 AM

which is in MDYYYY AM/PM format, 2 hours behind my actual time.

What am I doing wrong? Thanks. :)

Found the culprit: I was using DataTime data type for the Internal Tag. :)

Thanks for the help!