30.5.11.2 Pulse Catch Input Status - Pulse Catch (LT Series)

Use pulse catch to import pulse without setting the start and stop flags.

The pulse catch detect flag shows the pulse catch detection state under the CH special I/O state in the system variable (#L_ExIOSpCtrl). The watch bit will differ, depending on the CH to which you allocate the pulse catch.

#L_ExIOSpCtrl

If the 1st bit in the CH is 1, the pulse input has been detected. If it is 0, the input has not been detected.