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weekday scheduling at S7 300

Created by: zeroptr at: 6/22/2009 4:40 PM (5 Replies)

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6/22/2009 4:40 PM	Rate (0)
zeroptr Posts: 31 Rating: (0)	Hi all, I have to write a plc program to a s7 300 315 2 dp cpu station. Customer wants to make some issies by using scheduling.. For example some processes must work at every monday at 10:00 AM and some issues must work everyday at 7:30. And wants to add some dates. Has any one has any sample or idea to accomplish this ? I have a tp177 panel I have to show them to user also, I use WinCC flexible.. I'm telling this becouse, panel may have a simple way to do this...
zeroptr Posts: 31 Rating: (0)	Last edited by: zeroptr at: 6/22/2009 4:41 PM
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6/22/2009 5:18 PM	Rate (1)
miami Platinum Member Joined: 8/31/2005 Last visit: 12/16/2025 Posts: 2198 Rating: (331)	Try this applications: http://support.automation.siemens.com/WW/view/en/21669756 http://support.automation.siemens.com/WW/view/en/31696259
	Last edited by: miami at: 6/22/2009 5:19 PM Last edited by: miami at: 6/22/2009 5:18 PM
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This contribution was helpful to 1 thankful Users umencho

6/22/2009 5:24 PM	Rate (0)
Sydney Gold Member Joined: 1/4/2008 Last visit: 12/22/2025 Posts: 703 Rating: (98)	Hello, for the cyclic triggering you can use thetime-of-day interrupt setting in the HW configuration of the CPU. Unfortunatelly CPU you use has just the one (OB10). For another you could use the SFC1 READ_CLK and comare it with the set dates and times. Regards Sydney helpful links: http://support.automation.siemens.com/WW/view/en/22819915 http://support.automation.siemens.com/WW/view/en/24658864 http://support.automation.siemens.com/WW/view/en/24104104
	Last edited by: Sydney at: 6/22/2009 5:29 PM links addition
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6/22/2009 5:32 PM	Rate (0)
Ayman Elotaify Diamond Expert Joined: 5/28/2008 Last visit: 1/14/2026 Posts: 4522 Rating: (843)	Hello, I think read clock function would be better specially the client need these dates to be available on the HMI for further modifications/setting. If you used OB10. It will work for only one issue. And it won't be accessable by the operator. Regards,
	Ayman Elotaify
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6/22/2009 5:55 PM	Rate (0)
Sydney Gold Member Joined: 1/4/2008 Last visit: 12/22/2025 Posts: 703 Rating: (98)	The time-of-day interrupts could be modified by the SFCs, but I would also use the reading and comparing the time, because it's easier and has more capability. The time is enough to read once per cycle and you could create a routine for comparison which can be used then many times in the programm. Regards Sydney

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6/22/2009 8:06 PM	Rate (0)
zeroptr Posts: 31 Rating: (0)	thank you very much who replied... miami's firs link seem to solve this I'm tryin...
zeroptr Posts: 31 Rating: (0)
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