Hello all I want to control AC leadshine servo motor
Presumably the off-white thing with printing on it, in the background is the datasheet - start there.
Looks like a fairly normal Step & Direction stepper controller. ENA for enable, DIR for direction, and PUL (Pulse) for Step. The manual should say how to connect it to output pins on a 5V processor. My guess is that you connect the Minus (-) side of each input to Ground and the Plus (+) side of each input to an Arduino pin.