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Seting hour for summer and winter in S7_224

1/1/2011 6:02 PM	Rate (0)
Otobit Experienced Member Joined: 6/20/2010 Last visit: 12/28/2025 Posts: 97 Rating: (0)	Hi all. I have specific problem. I'm using S7_224 CPU. Whenever there is a time change my system does not I don't know where is a problem. Anybody has idea or faq?? Best wishes for this year

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1/2/2011 9:15 AM	Rate (0)
umencho Grandmaster Joined: 3/21/2006 Last visit: 1/10/2026 Posts: 10247 Rating: (1183)	Hello, Take a look there Using an S7-200 without twilight switch, how do you have shutters open at sunrise and close at sunset? if there is not so clear: Helmut_13 Hi, goto Clock instrucktion and open the help desk for READ/SET_RTCX here you find more information. A action once a year you can program if you read the RTC and compare year, mounth, day, hour, minute and second. If each is true then you can program what you need. I hope this helps. Regards Helmut Best regards, Hristo Mihalev

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1/2/2011 4:40 PM	Rate (0)
Otobit Experienced Member Joined: 6/20/2010 Last visit: 12/28/2025 Posts: 97 Rating: (0)	Helmut of course, you're right, the CPUs 222, 224 and 226 (version 2.0 or later) supports the automatic adjustment of daylight saving time. I forgot to say that I have a CPU 224 REL01.21. Anyway, I transferred the project "shutter_control_en.mwp"and the CPU has stopped communicating with my PC, then I had to do a factory reset with the "WIPEOUT.EXE" by MS_DOS, I think that this CPU I can not do this. Anyway, not making an advance or delay progressive throughout the year, but only by one hour when summer comes, and delay a now when winter comes. Thanks for everything, I hope your answer if you have something to say.

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1/6/2011 5:09 PM	Rate (0)
Helmut_13 Posts: 2930 Rating: (432)	Hi, your PLC V1.21 does not support the expanded time features. I would replace the PLC. I can remember a program profided by siemens to get the new US daylight saving feature. But the Program was verybig and has required 50% memory. So the chang ethe PLC will be teh better solluton from my side. Hope this helps
Helmut_13 Posts: 2930 Rating: (432)
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1/7/2011 1:13 AM	Rate (0)
Otobit Experienced Member Joined: 6/20/2010 Last visit: 12/28/2025 Posts: 97 Rating: (0)	Thanksfor your helpUmencho &Helmut_13

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