Posted 14 Aug 2017 Hello, I have a flowmeter (macnaught flowmeter) which says that it outputs a 2 square waves. I am unsure how to connect the flowmeter to my plc (CJ1M-CPU23), do I need an additional unit or can I use the general purpose IO things mentions in the manual (IN6-9 say they are high speed counters)? Any advice would be appreciated. Thanks, Jay Share this post Link to post Share on other sites
Posted 14 Aug 2017 Depending on the pulse frequency, you should be able to use the CPU23 high speed counter inputs. Check the W395 manual for specific information on the built in I/O. Hope this will help. 1 person likes this Share this post Link to post Share on other sites
Posted 5 Mar 2018 Hi, Jay sharp http://www.ia.omron.com/products/family/1649/?_ga=2.129153484.1311493843.1520247220-1650058651.1519883537 I thing this link may help you CJ1W-CT021 high speed input module it have following features: input frequencies to 500 kHz. • 32-bit counting range. • Digital variable noise filter provided. • 5, 12, 24 V line driver inputs available. • Supports simple, ring, and linear counting modes. • Supports two external control inputs, and a total of 16 functions can be set: open gate, close gate, preset, reset, capture, stop/capture/reset combinations, reset enable, and more. • One Unit supports two external outputs and 30 internal outputs with counter value zone comparisons, target comparisons, delays, holds, programmable outputs, and hysteresis settings. • Pulse rate measurement function and data logging. • Counter outputs and external control inputs can be used to trigger interrupt tasks in the CPU. Share this post Link to post Share on other sites