What unit is default for a timer?

Well - I still don't know WHERE / HOW the scaling is done but since I already have seen from being online in the PLC that the unit of the values typed in becomes minutes I have to park it here and work on other things.

Maybe I find the scaling next time I bump into an instance of this timer.

jacek d

Long time since I messed up with WinCC...

I'd check Tag Management. Find the tag and try to find its properties menu. Right click maybe?

Thanks again jacek d.

But the screenshot in that thread does not show me which WinCC tool this preferences are set in - please see the screenshot.

Also is the conversion of time linear - should I just multiply the (unitless) value with 60 (seconds to minutes)  or what (then we are back to how do we know that the entered (unitless) value is in seconds)?

jacek d

https://support.industry.siemens.com/tf/WW/en/posts/wincc-linear-scaling-of-tag-value-range/98702?page=0&pageSize=10 

This should be in the Tag Management.

On the property page there are: a Tag Value Range - this is in WinCC; and coresponding a Process Value Range - this is in PLC.

And you know, that in the PLC the unit is millisecond.

So, let's suppose you will find that the Tag Value Range is 0 - 1, and the Process Value Range is 0 - 60000. Then 1 on the display is 1 minute. 

Thank you jacek d.

That solved it :-) 

jacek d

This should be in the Tag Management.

On the property page there are: a Tag Value Range - this is in WinCC; and coresponding a Process Value Range - this is in PLC.

And you know, that in the PLC the unit is millisecond.

So, let's suppose you will find that the Tag Value Range is 0 - 1, and the Process Value Range is 0 - 60000. Then 1 on the display is 1 minute.