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measure maximum of analog signal and show it's max. value on display.

4/7/2011 10:04 AM	Rate (0)
gam01hr Regular Member Joined: 2/10/2011 Last visit: 6/19/2023 Posts: 25 Rating: (0)	Hallo, can I do this simple analog task with LOGO? I need measure maximum of analog signal. And show it's max. value on display. The requested function is like a peak detector. If yes, which block should I use?

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4/7/2011 10:30 AM	Rate (0)
Marcjan Platinum Expert Joined: 4/22/2010 Last visit: 10/17/2024 Posts: 5697 Rating: (715)	In the German Forum i found a example what does exaxtly that. /tf/WW/de/postattachments/download?attachmentId=3986 Best Regards Marcjan Attachment min-max.JPG (404 Downloads)
	Last edited by: Marcjan at: 4/7/2011 10:36 AM Problem solved? Please let us know! Please no technical questions by PM, use the forum sections for your questions.
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This contribution was helpful to 1 thankful Users Betel

4/12/2011 11:10 AM	Rate (0)
gam01hr Regular Member Joined: 2/10/2011 Last visit: 6/19/2023 Posts: 25 Rating: (0)	Thank you very much, I see the comparator, the analog mux and the analog memory can do this work. One more question: What about the speed of change of the analog signal when I am catching the maximum value. I suppose if the analog signal changes faster then the cycle time of logo, I will miss the value. The cycle time is approximately about 100ms? Maybe for faster signals should I use extrnal peak detector with op.amp.

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