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Problem calculating S7-300 cycle and reaction time

Created by: Gegrs at: 1/17/2009 4:10 PM (1 Replies)

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1/17/2009 4:10 PM	Rate (0)
Gegrs Posts: 1 Rating: (0)	Hello! I have a problem with calculating cycle and reaction times with this page: http://www.automation.siemens.com/perfdata/DPRea/DPRea.aspx?lang=en&showwizard=1 I want to understand HOW Siemens gets those times. I have lookedp in many manuals, but I can't get close to these times. Base load (K) + number of bytes in PI in module rack 0 x (A) + number of bytes in PI in module rack 1 to 3 x (B) + number of words in PI via DP x (D) = Transfer time for the process image Is this the right formula? Or do I need something else? Do I need to know ET 200M cycle time? Where do i need to put: Load due to program: 10 ms??? I use these manuals: http://support.automation.siemens.com/WW/view/en/12996906 http://support.automation.siemens.com/WW/view/en/21362915 Thank you in advance!
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1/19/2009 1:45 PM	Rate (0)
miami Platinum Expert Joined: 8/31/2005 Last visit: 10/22/2024 Posts: 2198 Rating: (328)	Gegrs I have a problem with calculating cycle and reaction times with this page: http://www.automation.siemens.com/perfdata/DPRea/DPRea.aspx?lang=en&showwizard=1 I want to understand HOW Siemens gets those times. All performance data are really metered, and not calculated. Therefore you can only select the metered configurations on this pages.

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