Posted 22 Oct 2019 How can I create a function generator or polynomial in PLC5/80? By this I mean I need a eleven point curve that changes the output based on the input. I do this all the time with DCS logic, but I don't see a "Polynomial" of "Function" block in RSLogix5. A simple curve might look like this. input output x1= 0 ...y1= 0 x2= 10 ...y2= 31 x3= 20 ...y3= 58 x4= 30 ...y4= 89 x5= 40 ...y5= 118 x6= 50 ...y6= 147 x7= 60 ...y7= 178 x8= 70 ...y8= 216 x9= 80 ...y9= 238 x10=90 ...y10= 269 x11=100 ...y11= 300 Share this post Link to post Share on other sites
Posted 22 Oct 2019 See link.. It is an online curve software to generate a formula for you. Then just use a compute instruction. https://mycurvefit.com/ Share this post Link to post Share on other sites