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LOAD INITUAL VALUE???

Created by: Yalcin at: 1/24/2007 1:06 PM (6 Replies)

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1/24/2007 1:06 PM	Rate (0)
Yalcin Posts: 40 Rating: (1)	Hi...Can anybody help me???? I have CPU314C2 DP... Can I load the initual value to the dbs when the CPURUN toSTOP...
Yalcin Posts: 40 Rating: (1)
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1/24/2007 2:43 PM	Rate (0)
Aret Posts: 2348 Rating: (265)	You can rewrite them by yourself in OB100..102. There is no event for PLC "on going to STOP mode" :^)
Aret Posts: 2348 Rating: (265)
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1/24/2007 2:56 PM	Rate (0)
Yalcin Posts: 40 Rating: (1)	[quote user="Aret"]You can rewrite them by yourself in OB100..102. There is no event for PLC "on going to STOP mode" :^) Thank you for your help..... Best Regards... Yalcin, emesis..
Yalcin Posts: 40 Rating: (1)
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1/24/2007 8:43 PM	Rate (0)
heut Advanced Member Joined: 11/7/2006 Last visit: 7/19/2024 Posts: 24 Rating: (4)	Hi, There is a standard option for a DB you can enable. Non-Retain: Mit dieser Option können Sie das Remanenz-Verhalten von Datenbausteinen festlegen. Die Wirkung dieser Option setzt voraus, daß die CPU die Retaineigenschaft von DBs unterstützt. Ein Datenbaustein mit der Eigenschaft "Non-Retain" wird in einer solchen CPU (z.B. CPU 317 V2.1) nicht im Remanenzspeicher abgelegt und damit nach jedem Netz-Aus- und Netz-Einschalten und nach jedem STOP-RUN-Übergang der CPU auf die Ladewerte zurückgesetzt. Ein DB mit der zugewiesenen Eigenschaft "Non-Retain" belegt zwar wie üblich Arbeitsspeicher, aber keinen Remanenzspeicher mehr. So i think this is a solution for your problem without programming anything. Greetings

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1/25/2007 7:22 AM	Rate (0)
Aret Posts: 2348 Rating: (265)	heut, think you are right. Yalcin - sorry for mislead, thought non-retain blocks reload their value only after power-down.
Aret Posts: 2348 Rating: (265)
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2/16/2007 5:35 PM	Rate (0)
Marcio R. Santos Silver Member Joined: 12/5/2005 Last visit: 12/4/2025 Posts: 239 Rating: (9)	Hi, But this option only works with CPU317F-2DP and IM151-7 CPU? Well, catching a hook. In the M7 it was storage values CPU in the EEPROM, well and until today I don't find a practical method to save values permanently in S7. I always send the value that I need to IHM/SCADA and later I request this value. Sincerely, I never liked to made this. Somebody has a other solution?
	Márcio Santos www.marcioroberto.wordpress.com
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2/16/2007 6:11 PM	Rate (0)
Marcio R. Santos Silver Member Joined: 12/5/2005 Last visit: 12/4/2025 Posts: 239 Rating: (9)	Ohhh, Some times, when I really need that a value be saved at any cost, I savethis value in theRunTime Meter, and I don't allow theRunTime Meter enabled. But this solutions is very appellative.
	Márcio Santos www.marcioroberto.wordpress.com
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