Counting pulses per minute

[bodyx]

hello, I work with GX developer and do not know how to make a program to calculate a sensor pulses per minute, please if you can help me with an example Thanks Edited December 26, 2012 by bodyx

[Crossbow]

There's so many ways to interpret this you need to be more specific. And how fast are these pulses coming? Are you looking at a fixed window repeating every minute? like seconds 00-59 on the clock? Or are you looking to wait for one pulse, and then count 60 seconds from that point? What I would recommend is this: Run a timer for 60 seconds. Run a counter which counts your pulses. When the timer completes, move the value of the counter to a register and reset it. You could also use the seconds on the PLC clock and a compare instead of the timer.

[bodyx]

I am looking to calculate how many such boxes to go through a sensor 60 seconds but I would like if possible an example done by someone already in ladder language, do not want to use the position SPD (...) Thanks

[bodyx]

I forgot to mention that using FX1N PLC

[kaare_t]

Why not SPD?

[Crossbow]

I posted a detailed explanation of how to do it, but I'm not going to write your ladder for you. I think you can handle one timer and one counter.

[bodyx]

Thanks anyway that's not the problem, I already solved thanks a lot