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PID tuning: plot of the step response TIA portal v11

Created by: NA Simatic at: 10/7/2012 8:03 AM (2 Replies)

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10/7/2012 8:03 AM	Rate (0)
NA Simatic Posts: 41 Rating: (0)	Hello experts, This is my first time to deal with PID in Step7 v11 and my question is about manual tuning through step response. in order to accurately plot the response and find the point of inflection along with Tu and Tg: is there a tool to export the response in tabular form so that i can reconstruct a polynominal out of it and extract the point of inflexion and the tangent line exactly? or just print the curve and manually plot tangent line ...? Best regards
NA Simatic Posts: 41 Rating: (0)
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10/9/2012 11:58 AM	Rate (0)
Denilson Pegaia Platinum Expert Joined: 9/23/2005 Last visit: 1/17/2025 Posts: 4394 Rating: (1463)	Hi, it isn't a included tool to do it. However you could log your variables and export then as csv in the Web interface with the help of the data log function: Sample program: S7-1200 and DATA LOG https://www.automation.siemens.com/BR/tf/WW/en/Posts/57715#top
	Denilson Pegaia Siemens Industry Sector Technical Support
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10/9/2012 2:25 PM	Rate (0)
NA Simatic Posts: 41 Rating: (0)	Thanks a lot Pegaia for the good hint
NA Simatic Posts: 41 Rating: (0)
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