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1/6/2009 3:10 PM | |
Joined: 9/23/2005 Last visit: 10/8/2024 Posts: 4349 Rating: (1446) |
Hi, Just some tips: the option 1 and 2 was aborted in the posted topic "How to calculate frequency from counting pulses measurement ". There has a sample program to implement it. Here the precision is 1 pulse / delta time. The precision of the measurement of the 3rt option is function of the clock acurance of the PLC. For 1ms clock acurancy, the precision is1 / ( pulse duraction +/- 1 ms). In this case, for 1% of precision, the minimal pulse duraction is 100ms (~10Hz). |
Last edited by: Pegaia at: 1/6/2009 3:11 PMDenilson Pegaia |
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1/7/2009 12:58 PM | |
Posts: 19 Rating: (1) |
Hi I yougo back a couple of pages in this forum, to 14 Nov last year you will find an example i posted. Regards Dan Flodins |
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