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OB's or Timers less than 1ms !

Created by: Tomy Master at: 10/6/2009 12:34 AM (2 Replies)

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10/6/2009 12:34 AM	Rate (0)
Tomy Master Gold Member Joined: 5/4/2009 Last visit: 5/28/2024 Posts: 914 Rating: (40)	Dear experts... I need to perform a specific operation (calculating the average of high speed pulses) and I want to use a time interrupt OB or timer but with interval less than 1ms. Any idea I will be greatull. Regards, Tomy.
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10/6/2009 2:02 AM	Rate (1)
fritz Diamond Expert Joined: 10/7/2005 Last visit: 11/13/2024 Posts: 3027 Rating: (1057)	Hello Tomy Master Iwouldn't bother trying to do this in a300 PLC (or 400 for that matter). Have a look at High Speed counter cards (FM350-1 or -2) or High Speed Boolean Processor (FM352-5) instead. I hope this helps
	Cheers fritz The advice and opinion given in this thread is that of the author and does not necessarily reflect the views of I S Systems Pty Limited. To find out how I S Systems can help you with your automation needs please visit www.issystems.com.au.
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10/6/2009 11:30 AM	Rate (1)
miami Platinum Expert Joined: 8/31/2005 Last visit: 10/22/2024 Posts: 2198 Rating: (328)	I think you can use : - the counter inputs of CPU 313C or CPU314C (look here ) - the FM350 - the ET200 module 1COUNT. Please check if one of this is working for you.
	Last edited by: miami at: 10/6/2009 12:18 PM
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