edge detection

[a.afkhami94]

hello... i use of OMRON CQM1h-CPU51. How do I find rising edge for increment a Counter?

[scotty_177]

I think if you are using a contact to control it right click and got to differentiate up or you can maybe put an @ sign in frnt of your inc /dec function

[Crossbow]

Counters don't need it, they are automatically pulsed. But for commands like INC/DEC, ADD, SUB, other options include: Using a DIFU function Right click on a contact and select Differentiate up Using @ sign on name of function or function block. Only certain commands support @, so check programming manual.

[Michael Walsh]

You cannot differentiate a single contact (on a CQM1H), but you could use the DIFU instruction, which makes every contact for that address a one shot.