S7-300 PLC与设备进行Modbus RTU通信方法

Communication Method of S7-300 PLC and Equipment Through Modbus RTU Protocol

给出S7-300PLC与设备通过Modbus RTU协议进行通信连接的方法,以及硬件组态步骤、软件设计方法和要点。该方法可广泛应用于过程控制与数据采集系统,具有简单、方便等优点。

A communication method of S7-300 hardware configuration, software design method process control and data collection system. It is PLC and equipment through the Modbus and key points are given. This method can simple and convenient. RTU protocol, and be widely used in