引用本文: | 张绘敏, 马殷元, 雷蕾, 孟萍. S7-200PLC在变频调速电梯控制系统中的研究与应用[J]. 铁路计算机应用, 2010, 19(8): 7-10. |
Citation: | ZHANG Hui-min, MA Yin-yuan, LEI lei, MENG Ping. Application and research of S7-200PLC to Speed Control and Variable Frequency Elevator Control System[J]. Railway Computer Application, 2010, 19(8): 7-10. |