Technology instructions
10.1 Counting (High-speed counters)
S7-1200 Programmable controller
568 System Manual, V4.2, 09/2016, A5E02486680-AK
The figure below shows an example of the hardware gate opening and closing with a digital
input. The digital input is configured for an active high level:
Note
The configured input filters delay the control signal of the digital input.
The hardware gate function is only available to be used when the HSC is configured for
Count mode. In Period and Frequency modes, the
internal gate state is the same as the
In Period mode, the software gate is controlled by "HSC_Period.EnHSC".
In Frequency mode, the software gate is controlled by "HSC_Frequency.EnHSC".
Refer to Input functions (Page 578) for information on how to configure the Gate function.
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