daylight saving detection

SIMATIC S7-200/300/400, Step7, PCS7, CFC, SFC, PDM, PLCSIM,
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luce
Posts: 4
Joined: Wed Apr 13, 2011 8:55 am

daylight saving detection

Post by luce » Sun May 03, 2015 2:22 am

Hi,

Is existing any block to pcs7 or step 7 which can detect that was changed form winter/summer time?

cheers
Luce

Info
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Faq & Info
Posts: 402
Joined: Wed Oct 05, 2005 9:00 am

Re: daylight saving detection

Post by Info » Sun May 03, 2015 4:27 am


luce
Posts: 4
Joined: Wed Apr 13, 2011 8:55 am

Re: daylight saving detection

Post by luce » Sun May 03, 2015 8:44 pm

Hi,

I was looking for information on Siemens web-pages, but official response of Siemens is to keep winter time in plc all the time. My process depends on local time, so I must to know when was time change done. Synchronization time is not supporting daylight saving change.

cheers
Luce

dsekulic
Posts: 184
Joined: Sun Feb 12, 2006 5:47 pm
Location: Europe

Re: daylight saving detection

Post by dsekulic » Sun May 03, 2015 10:25 pm

Hi,
For DCF77 You need hardware.
There is some functions in OSCAT library
link: http://www.oscat.de/component/jdownload ... l?Itemid=0

there You can find oscat_basic_332_s7 Step7 library with various functions. In manual oscat_basic333_en there is one function DT2_TO_SDT which are able to check if daylight saving time is active or not.
kind regards

luce
Posts: 4
Joined: Wed Apr 13, 2011 8:55 am

Re: daylight saving detection

Post by luce » Tue May 05, 2015 1:04 am

That is what I was looking for.
Thank you!!!

Luce

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