Posted 13 Jun 2023 Hello, I am no to programming. I have a timer that counts up output from 0-12, the resets back to zero. When I shut off the input, I want to reset counter to zero. What would logic would I use for this? Thanks Doug Share this post Link to post Share on other sites
Posted 13 Jun 2023 Quote I have a timer that counts up output from 0-12, the resets back to zero. Timer instructions time things; Counter instructions count things. Based on the wording of your question, I'm not sure if you're timing or counting. Either way... A Timer On Delay (TON) instruction will time when the input logic to it is true. TON is not retentive, so it will reset itself when it's input logic is false. A Count Up (CTU) instruction will count up one whole number (0 to 1, 1 to 2, 2 to 3, etc) for each false to true transition of the logic to it. It is a retentive instruction, which means it will hold the accumulated value until it's associated Reset (RES) instruction is set. PS. If this is a homework question you might consider watching some YouTube videos on @TimWilborne's channel. 1 person likes this Share this post Link to post Share on other sites
Posted 14 Jun 2023 I second @TimWilborne's material and also suggest Ron Beaufort:https://www.youtube.com/playlist?list=PLGzS56y9k4eYr1uS3jPPxGunBTtPcS3Ez He's since retired, but that playlist is another good place to start. Also, AB's online help is actually not bad (in RSLogix5,500,5000 and Logix Designer, at least). It's not perfectly perfect, but it's better than the others I've tried. Highlight the instruction and hit "F1" to go right to the help for it. Share this post Link to post Share on other sites
