Qsplc-iii programmable control simulation experiment box is programmable controller (Siemens s7-200), STEP 7-micro /WIN programming software, configuration software, simulation teaching software, simulation control software produced by zhejiang qiushi company. The experimental board is equivalent to the integrated simulation experimental equipment, with the characteristics of complete experimental items, flexible configuration and rich content. It can not only meet the requirements of Siemens PLC experiment teaching and related course design and evaluation in colleges and vocational schools, but also can be used as training equipment for engineers and technicians.