I have a servo linear actuator that has a stroke of 0 to 6”. The position feedback from the servo control is 0-10V which corresponds to the 0 to 6” stroke. I want to read this feedback in my PLC and turn outputs on or off based on the position feedback. I’ll be using a Micrologix PLC with an analog input card. I need to be able to turn the outputs on at different points in the extend and retract of the stroke. The problem is on the stroke extend the position feedback is 0-10V and on the stroke retract the position feedback goes the opposite direction 10V– 0. I need absolute position feedback throughout the entire actuator extend and retract. Does anyone know of a way to combine the increasing 0-10V and the decreasing 0-10V so they correspond to 0 - 32768. I have no problem doing the scaling; I’m stuck on how to combine the positive going signal and the negative going signal. I’m not sure if this is feasible or I need to look at an alternative solution. Any help or thoughts would be greatly appreciated.
“Thanks”
“Thanks”