二相四拍步进电机控制程序设计,本次课程设计采用的是西门子公司的S7-200系列小型PLC。S7-200以其极高的性能价格比，在国内占有很大的市场份额。S7-200适用于各行各业的检测、监测及控制的自动化，无论独立运行或连成网络，都能实现复杂的控制功能。另外，S7-200具有极高的可靠性、丰富的指令集和内置的集成功能、强大的通信能力和丰富的扩展模块。,Two-phase stepper motor control of four-beat programming, this course design is based on Siemens S7-200 series of small PLC. S7-200 with its high cost performance, a large domestic market share. S7-200 applies to all walks of life to detect, monitor and control automation, whether stand-alone or connected network can realize the complex control functions. In addition, S7-200 with high reliability, a rich instruction set and built-in integration capabilities, powerful communications capabilities and a wealth of expansion modules.