摘要
Modbus是一种串行通信协议,是Modicon公司(即施耐德电气Schneider Electric)于1979年为使用可编程逻辑控制器(PLC)通信而发表。Modbus已经成为工业领域通信协议的业界标准(De facto),并且现在是工业电子设备之间常用的连接方式。本文主要说明Modbus RTU通讯协议,西门子1200PLC如何通过Modbus RTU实现对智能物料架的智能化的显示与引导。
Modbus is a serial communication protocol published by Modicon(now Schneider Electric) in 1979 for communication using programmable logic controller(PLC). Modbus has become an industry standard(De facto) for industrial communications protocols and is now commonly used as a means of connecting industrial electronic devices. This paper mainly explains the Modbus RTU communication protocol,how Siemens 1200 PLC realizes the intelligent display and guidance of intelligent material rack through Modbus RTU.
