摘 要：论述西门子S7-200 系列PLC基于Modbus通讯协议对ABB变频器控制的系统集成应用。上位机使用西门子触摸屏作为人机交互接口。将控制系统状态通过Modbus通讯转送给DCS，本设计有节能环保、降低人工劳动强度，使用MODBUS通讯降低现场施工难度等优点。
关键词：PLC 节能 环保 变频器
Abstract: This paper introduces the application of Siemens S7200 series PLC to ABB inverter control based on Modbus communication protocol. The upper computer uses Siemens touch screen as man-machine interface. The state of the control system is transferred to
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