Capture Principle with a Main Type
The capture function stores the current 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:
oconfigure the optional Capture input CAP
ouse the HSCGetCapturedValue 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 current counter value, puts it into the Capture register, and triggers the rising edge of Cap_Flag. |
|
3 |
Get the stored value using HSCGetCapturedValue. |
|
4 |
While Cap_Flag = 1, any new edge on the physical input CAP is ignored. |
|
5 |
The rising edge of HSCMain function block input ACK_Cap triggers the falling edge Cap_Flag output. A new capture is authorized. |
