Internet PLC Forum

General => Technical support => Topic started by: dan on August 17, 2006, 10:39:33 AM

Title: how to counters
Post by: dan on August 17, 2006, 10:39:33 AM

Hi,

I have one "master" counter and 30 "regular" counters.

Based on the poz of the master counter I need to activate only 2 of each regular counter.

Any sugestion of what is the best way to do this. I'm a bit concern about the size and the speed of the program.

Dan

Title: Re:how to counters
Post by: support on August 17, 2006, 10:32:18 PM

What's the frequency of incoming pulses to the "master counter" and "regular counters". Since you need so many counters they can't be high speed counters, so need to be constructed out of normal up/down counters. If your program size is not too big and you don't use complex custom functions, then the regular counters should be able to count at 50Hz or lower. Best is to test it with your actual program to know at what program length it started losing counts.