The ArcVoltage input is a floating point value. Most folk get it by using a Mesa THCAD connected to an encoder and then use the velocity output of the encoder.
Can I enter analog voltage to ArcVoltage after a voltage divider 50: 1 from plasma?
No, you cannot directly input a voltage, it can only be a HAL floating point value.
Why an error in the lower right corner appears - "joint 2 following error"?