基于MODBUS协议的DCS系统通讯浅析

A Brief Talk on the DCS Communications Based on MODBUS Protocol

现今大多数现场普遍存在DCS与其他专用控制系统混合使用的情况,这些专用控制系统包括PLC、数据采集器和各种智能仪表。这就涉及DCS与其他专用控制系统的快速简单的通讯。基于开放的通讯协议MODBUS,使得DCS与相对独立的PLC及类似设备的数据通讯成为可能。通过数据通讯,可以使操作员在CRT上实现对各通讯设备的监控和操作。

Nowadays most plants use DCS mixed with other special control systems, including PLC, data acquisition and smart instrumentation. Based on opening communication protocol, it is possible that DCS and PLC and the similar equipment communicate their data. Operators can monitor and operate various communication equipments by data communication.