Paul Augood Posted November 2 Report Share Posted November 2 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 2022 Joe Tauser Posted November 3 MVP 2022 Report Share Posted November 3 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 Author Report Share Posted November 3 Joe, thank you for your replay, greatly appreciated. Paul Quote Link to comment Share on other sites More sharing options...
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