ModBus通讯协议在艾默生Deltav中控DCS系统与虹润智能仪表通讯中的应用

摘要

Modbus communication protocol,developed by Modicon in 1979,has become awidely used bus protocol in industrial control field.Through the protocol,data collection and exchange between different equipment and control system can be realized,and this connection can even be extended to industrial control network.From the angle of practical applica-tion on water injection pump temperature monitoring,this paper introduces the design as well as the application and specific implementation method of Modbus communication protocol in the communication between Emerson DeltaV DCS control system serial communication card and HongRun intelligent display instrument on offshore platforms.Through the simple communication configuration in Emerson Deltav DCS control system,functions of remote and real-time display of tempera-ture parameters and history record have been realized for water injection pumps.%自1979年Modicon公司制定Modbus通讯协议以来，其已经成为工控领域广泛应用的工业现场总线协议。通过该协议可以实现两个不同设备、控制系统之间的信息数据采集、交换，甚至可以扩展组成工业控制网络。从注水泵温度监控的实际应用出发，介绍了 ModBus 通讯协议在海上平台艾默生 Deltav 中控 DCS 系统串口通讯卡与虹润智能显示仪表通讯的设计、应用及具体实施方法。通过艾默生 Deltav 中控 DCS 系统简洁的通讯组态实现了注水泵温度监控参数远传显示、实时显示、历史记录功能。