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SFB47: How can I save valuecounter

Created by: Boong at: 1/13/2009 6:58 AM (4 Replies)

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1/13/2009 6:58 AM	Rate (0)
Boong Posts: 13 Rating: (0)	Dear All, I use SFB47 (High speed counter in CPU 313C) to counter met It active ok, but valuecounter can not remember (mean that 000) when power off - 0n Pls help me, how I can save valuecounter. Tks,
Boong Posts: 13 Rating: (0)
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1/15/2009 6:54 AM	Rate (0)
Boong Posts: 13 Rating: (0)	Dear All, Pls help me I have the following problem when i shut down te PLC the counter value in DB47.DBD14 is set to zero. Now i use OB100 so i can move the counter value to a different doubleword at startup before te counter is set to zero. But how can i after startup move this value back in DB47.DBD14. Tks, best regard
Boong Posts: 13 Rating: (0)
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1/17/2009 11:26 AM	Rate (0)
Turce Posts: 4 Rating: (0)	Hello! Try with http://support.automation.siemens.com/WW/llisapi.dll?func=cslib.csinfo&lang=en&objid=18467424&caller=view You can initialize value("WR_Job_value") with bit "WR_Count_value". Best regard
Turce Posts: 4 Rating: (0)
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1/18/2009 3:35 AM	Rate (0)
Boong Posts: 13 Rating: (0)	Dear Turce, Tks, follow your helps. I do so like that, but can not, I have picture about user program, you can see it and show me Why? Tks Attachment SFB 47.JPG (273 Downloads)
Boong Posts: 13 Rating: (0)	Last edited by: thanhbinh77 at: 1/18/2009 3:42 AM
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1/18/2009 10:01 PM	Rate (0)
Turce Posts: 4 Rating: (0)	Hello! The easiest way is that you download this example http://support.automation.siemens.com/WW/llisapi.dll/csfetch/18467424/FBCount31xC.exe?func=cslib.csFetch&nodeid=21921212 and instead of using SFB47 you use FB1 from example. (look picture). To keep counter value after restart PLC, you should in OB100 write counter value to DB50.DBD4 (from my example on the picture) and set bit DB50.DBX12.1. Best regards Attachment FB1.GIF (334 Downloads)
Turce Posts: 4 Rating: (0)	Last edited by: Turce at: 1/18/2009 10:17 PM
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