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Real Time Clock Function

Created by: RobVivex at: 11/2/2006 6:19 PM (4 Replies)

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11/2/2006 6:19 PM	Rate (0)
RobVivex Posts: 2 Rating: (0)	Hi, I'm trying to figure out a simple solution to set an Output 3 times a day at specific times ( for example 9:00, 12:00 and 15:00). I have a CPU 315 2DP. I'm looking at a solution using SFC 0 and SFC1, but I'm not sure how to setthe real time in SFC 0 when programming and how to exctact the current time in SFC 1. I have tried to figure this out using the System and Standard Functions manual, but I stuck.Ifthere is anybody out there who can help me on this, I would be greatful. /Rob
RobVivex Posts: 2 Rating: (0)
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11/2/2006 8:12 PM	Rate (0)
Tomcat Posts: 433 Rating: (48)	Hello Rob, there are some threads in this forum and faqs about SFC0 and SFC1. Setting Date and Time in S7-300 extract the present hour of CPU faq If you don't find a solution there, don't hestitate to post here again. Tomcat
Tomcat Posts: 433 Rating: (48)
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11/3/2006 11:24 PM	Rate (0)
Late Platinum Expert Joined: 1/7/2006 Last visit: 11/17/2023 Posts: 2705 Rating: (318)	Hi Rob, You may use OB10 to make every hour a interrupt and then look when the OB is called how late it is.... [:o]
	I hope that the answer will help, if you have still questions, don't hesitate to ask me. All the best, Late Never say never, think in solutions, not in trouble......
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11/7/2006 4:24 PM	Rate (0)
RobVivex Posts: 2 Rating: (0)	Thanks a lot for the tips Late and Tomcat. I solved it in a more easy way for anyone interested. In OB1 I used the variable OB1_DATE_TIME like this: Network: 1Set time to check: 15:00 LW#16#1500 TMW100 NOP0 Network: 2Compare the CPU time with 15:00 and set Output LLW15 LMW100 ==I =Q10.0
RobVivex Posts: 2 Rating: (0)
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11/9/2006 8:03 AM	Rate (0)
Aret Posts: 2348 Rating: (264)	Hm, i think it's possible to make OB10 starting every day at 9-00 and OB11 starting every day starting at 15-00. Think this is simpliest solution.
Aret Posts: 2348 Rating: (264)
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