S7 300/400 Daylight savings

[Michael Hunt]

Hi

I have S7 300's and 400's and they are looking at our NTP server for their time synchronisation. When I checked the time this week they were still on winter time eg. 1 Hour behind. Is it possible to get these PLC's to update automatically with daylight savings or do I have to write code for this? I was reading Siemens documentation and they say that daylight savings is not supported.

Thanks

 

[mordred]

you can write code for it provided you have an RTC there is an AB example under the downloads in the AB section on this site

 

[mordred]

as its an RSS file I printed it to a pdf format for you

 

[L D[AR2P#0.0]]

Here's a link to the Siemens web site describing summer/winter time processing:

http://support.automation.siemens.c...lib.csinfo&lang=en&objid=19324378&caller=view

 

[Michael Hunt]

Thanks for all the replies,

Has anyone got any examples of this in Step 7?