Hi I am working on automation project in which I want to control the polarity of the multiple devices by using at same time 4-20mA industrial sensor
Model 642/643/647/648 gives DC output with the help of 4-20mA current loop receiver output interfacing with Omega Onion

Kindly suggest me with hardware and any reference code and also wanted to control the PWM (either in forward or reverse polarity)

Is there any one who has good experience in this field ??