Control of step motor when you shao (PC)The double pulse. [The positive and negative pulse)Or pulse signal amplitude does not match, need to use our into 5 v single pulse signal module (Add direction) pulse:。 1, the input for the single pulse signal module dial the code switch should be allocated to the single pulse & throughout; Position. When the output pulse motor rotation. Change direction signal of high and low level can change the direction of motor rotation. You may refer to the specific timing signal module specification. (2, input for the dial the code switch should be allocated to the pulse signal module & middot; In the double pulse: & middot; Position. When hair is vein; The motor forward; When negative pulse, motor reversal. Positive and negative pulse cannot give at the same time, you may refer to specific timing signal module specification.