... current range:0.3-8V Characteristics:1.DC power input type:24V~50VDC2.Output current:1.3A-4.5A3.Mircostepping:1 ... GND:DC power cathode3,A+,A-:Stepping motor one winding4,B+,B-:Stepping motor other winding5,PUL+,PUL -:Stepping pulse input+5V (Rising edge effective ... , rising edge duration >10μS)6,DIR +,DIR-:Stepping motor direction input, voltage level touched off,high towards, low reverse7 ...