FactoryTalk - Seconds to MM:SS

[ShacharY]

Hey,
I'm trying to convert seconds to MM:SS view.
using tag: PLC\IN_CCD_TIME (integer) from PLC timer.
Numeric tag (HMI) MM: PLC\IN_CCD_TIME % 3600 / 60 SS: PLC\IN_CCD_TIME % 60
when seconds reach 59 then switch to 00, the minutes not added 1 only when seconds pass the 30. i know that's all about floating point.
Must to use seconds on PLC and use it for HMI as MM:SS.

need any help to use seconds as MM:SS,
Thanks!

 

[rdrast]

What is 3600 doing anywhere in there?
Minutes: Seconds / 60.
Seconds: Seconds % 60.

 

[ShacharY]

Hey rdrast,
I know about the 3600 that isn't relevant.
The problem is about counting the MM. for example:
(PLC) T4-XX (sec) & (HMI) Elapsed Time - MM:SS
T4-20 Elapsed Time-00:20
T4-29 Elapsed Time-00:29
T4-31 Elapsed Time-01:31
T4-59 Elapsed Time-01:59
T4-60 Elapsed Time-01:00
T4-61 Elapsed Time-01:01
T4-89 Elapsed Time-01:29
T4-90 Elapsed Time-02:30
T4-91 Elapsed Time-02:31

The T4 (INT) at any time passing the 0.5% after HMI division, the MM add 1. and after passing the 59 sec the MM not added 1.

Thanks.

 

[rdrast]

Use only integer math. No floating point.
And your table is completely wrong anyway. How is 29 = 29 seconds, but you want 31 = 1 Minute, 31 seconds?

 

[ShacharY]

I'm using INT.
As you said, the table is completely wrong but this is how i see the calculation of the MM in the HMI.

 

[Jeebs]

Suspecting some rounding with the /-function.
Where 0.5 is considered 1.


EDIT:

((PLC\IN_CCD_TIME % 3600) - ((PLC\IN_CCD_TIME % 3600) %60)) / 60

That will prevent any rounding issues. In theory; I think. Not tested. Not sure it's a valid expression.


But why do this in the HMI, not in the PLC? (just wondering)

 

[widelto]

Try this:
http://search.rockwellautomation.co...D:L:d1&wc=200&wc_mc=1&ud=1&filter=0&q=seconds

This example converts milliseconds to hour min secs.

 

[ShacharY]

Suspecting some rounding with the /-function.
Where 0.5 is considered 1.


EDIT:

((PLC\IN_CCD_TIME % 3600) - ((PLC\IN_CCD_TIME % 3600) %60)) / 60

That will prevent any rounding issues. In theory; I think. Not tested. Not sure it's a valid expression.


But why do this in the HMI, not in the PLC? (just wondering)

Super! that's work perfect!
Many thanks!

 

[Geospark]

Another way...

See also...

7771 - Displaying a Timer Accumulator value in Hour:Minute:Second format
Access Level: TechConnect

In short...

Create two numeric displays and use these expressions...

For minutes: ( ({[ControlLogix]Timer.acc}%3600000)/ 1000)/60

For seconds: ({[ControlLogix]Timer.acc}%60000)/ 1000

Regards,
George