Dears
I am facing problem to apply compare function with load cell analog input to control 3 valves: whereas
I have one load cell under three bins for three different materials:
when start button is pressed, v1 opens and the system measure the weight
if the weight equal or more than 500, v1 closes and v2 opens to measure material 2
if the total weight more than 1000, v2 closes and v3 opens to measure material3
if the total weights more than 1500 , v3 closes and v4 opens to discharge these materials into mixer.
I need help how to apply this in ladder diagram
thanks in advance