Capture Principle with a Main Type

Overview

The capture function stores the counter value when an external input signal is detected.

The capture function is available in Main type with the following modes:

To use this function:

configure the optional Capture input CAP
use the CapturedValue parameter of the HSCMain_TM3 function block to retrieve the captured value in your application.

This graphic illustrates how the capture works in Modulo-loop mode:

Stage	Action
1	When `EN_Cap` = 0, the function is not operational.
2	When `EN_Cap` = 1, the edge on CAP captures the counter value, puts it into the Capture register, and triggers the rising edge of `Cap_Flag`.
3	Get the stored value using the `CapturedValue` parameter of the HSCMain_TM3 function block.
4	While `Cap_Flag` = 1, any new edge on the physical input CAP is ignored.
5	The rising edge of `HSCMain_TM3` function block input `ACK_Cap` triggers the falling edge `Cap_Flag` output. A new capture is authorized.