Design of Controlling System of Stepping Motor Based on VB and Serial Communication

By using the serial communication controller MSComm provided by Visual Basic 6.0,data communication between PC and stepper motor control circuit was realized,and ultimately the direct control of stepper motor by PC was achieved.This control system has been successfully applied to the steel tape automatic verification apparatus,and the stepping motor could be well controlled practically.The system has simple control circuit,good human-machine interface and low cost.