BB-RTU与第三方设备Modbus通讯的实现方法

The Realization Method of Modbus Communication between BB-RTU and Third Party Equipments

介绍了Modbus通讯协议,包括在Modbus网络上的传输、Modbus主从设备通讯过程、Modbus消息帧等内容,并以广东大鹏液化天然气管线项目为背景,结合Modbus通讯特点,以RTU与污水处理设备间的通讯为例,详细介绍了BB-RTU与第三方设备间Modbus通讯的实现方法,包括Modbus通讯系统构成及软件的设计。

The Modbus communication protocol including transaction on Modbus network, Modbus communication process between master and slave equipment, Modbus message framing and so on are introduced. To take the Guangdong Dapeng LNG trunkline project as the background and according to the features of Modbus communication, to take communication between RTU and sewage disposal equipment as an example, the realization method of Modbus communication between BB-RTU and third party equipments including the structure of Modbus communication and software design are introduced in detail.