I have an ultrasonic sensor with range from 40~300 [mm] outputs 4~20 [mA] to my PLC(ClickPLC). I established connection with the PLC and VTScada Light, the value pulled form PLC, is varying from -171 to 700 something with scaling set as 0~100 for both raw and processed.
I tried to pulled data from some other addresses on my PLC which are not used at all, I did get a value of zero. So I assume the connection between sensor output and VTScada is good. But why I am getting this strange value in VTScada?
Really appreciated for any help!