Configuring event/period measurement operating mode

时间：2021-07-28

Event/period duration measurement

Event counter

You use event measurement (16-bit value) to measure the number of rising edges per application cycle over the feedback interface.

The event counter is a rotary counter.

An event counter overflow is not displayed.

The exact value must be calculated on the basis of the difference.

Period measurement

You use the period duration measurement (32-bit value) to measure the number of increments of 41.67 ns between the last two rising edges received in the application cycle over the feedback interface.

Period = 41.67 ns • number of increments

提示

Isochronous mode

Event/period measurement requires isochronous mode.

Select the the required channel for the Event/period measurement operating mode.

图片: Event/period duration measurement

Inversion

You can invert the 24 V ** to adjust it to your process. By default, the ** is not inverted.

Input delay

To suppress faults, you can set an input delay of 1 µs or 125 µs for the input filter of the digital inputs. Changes to the ** are only detected if they are constantly pending for longer than the set input delay time.

To allow **s pending very briefly to be detected at high counting frequencies, you need to set an input delay of 1 µs.

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