Debounce an input

A sensor can flicker for a moment. A TON on the input ignores anything shorter than its preset.

Step by step

Pick a step. The rungs are drawn by the editor after Core scans the program up to that step.

Global.PartEye

Global.EyeFilter

PRE 1500 ACC 0 EN 1 TT 1 DN 0

Global.EyeFilter.DN

Global.PartPresent

1. Eye flickers on. The TON starts timing. ACC is below PRE, so DN is 0.

Step	PartEye	EyeFilter.ACC
1. Eye flickers on	1	0
2. Eye flickers off	0	0
3. Eye on	1	0
4. Still on	1	600
5. Still on	1	1200
6. Eye off	0	0

A TON times only while its rung is true and resets the moment it goes false. A flicker shorter than PRE never reaches DN.
The rest of the program reads PartPresent, not PartEye, so it only sees a confirmed signal.
Each step here is one scan, 600 ms apart.

PRE in secondsPRE is in milliseconds. 1500 is one and a half seconds.
Filtering the off side tooThis filters turning on only. Use a TOF as well if the signal must also stay off for a while before it counts.