Paul Augood Posted November 2, 2023 Report Share Posted November 2, 2023 I have looked for some basic information about pulse counting but I couldn't answer what i believe is a simple question? I have some experience using the Vision series PLC for simple digital I/O and analog I/O. But I have a requirement to count pulse from a flow meter and plan to set up one of the inputs on the snap on module V200-18-E1B as a HSC linked to ML-95. I can make the connection to PLC direct or make a link between the flow meter device and the inputs to count the pulse with a PR Electronics 9202 pulse isolator. Then my scaled flow pulse should just increment ML-95. I am attaching some info on the flow meter compute pulse (max frequency 6.5hz. Just want to check I am understanding the function of the HSC input correctly. Thanks Paul Quote Link to comment Share on other sites More sharing options...
MVP 2023 Joe Tauser Posted November 3, 2023 MVP 2023 Report Share Posted November 3, 2023 You can connect the flowmeter directly to the -E1B high speed input. Since the outputs on your flowmeter are "Current Sinking" (translation - NPN), you'll need a pull-up resistor connected to 24V power to make them work. I recommend a 2.2K resistor. Joe T. Quote Link to comment Share on other sites More sharing options...
Paul Augood Posted November 3, 2023 Author Report Share Posted November 3, 2023 Joe, thank you for your replay, greatly appreciated. Paul Quote Link to comment Share on other sites More sharing options...
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