marwanco

MrPLC Member
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About marwanco

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    Hi, I am New!

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  • Country Canada
  1. Speed Formula in Ladder Logic

    Hello All, I'm stuck with displaying continuous speed of moving cylinder on HMI. Basically what I want is car llike digital speedometer. When I stop the cylinder, speed must go to 0 instantly. I'm using S7-200, but it doesnt matter I guess. I tryed to calculate diference in position every 1 second, but the value keep jumping up and down. something to do with timing, cant solve it. The cylinder speed must be around 20mm/sec, I'm measuring the position with 4-20mA current comming fromwire potentiometer, there is no problem here. Thanks, Marwan
  2. Panel pictures

    Hello Sparky, Thats my first post in this forum, and you have it. Very neat panels, must be proud of what you are doing. I have small question , How you drill holes for button in stainless steel (is it?) It looks like a simple task , but last time I broke my Stepbit and couple of drill bits. Maybe you recommnend certain brand/material. I usually drill a pilot hole, then enlage it with step bit ,then with hidrolic pump cut the proper hole size. Thanks. Marwan