The basics of counting, measurement and position detection
2.2 Basics of counting, measuring and position input (TM Count, TM PosInput, Compact CPU)
Counting, measurement and position detection
Function Manual, 12/2017, A5E32009889-AG
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A value "0" is returned until the first measured value is available.
The measurement process begins with the first pulse detected once the internal gate has
been opened. The first measured value can be calculated after the second pulse at the
earliest.
The measured value is updated in the feedback interface (Page 188) upon completion of
each update time. If the internal gate is closed, measuring stops and the measured value is
no longer updated.
The figures below shows an example of frequency measurement with an update time of 1 s:
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