S7 300/400 Daylight savings

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

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

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

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

Thanks for all the replies,

Has anyone got any examples of this in Step 7?