DSDI452 ABB

At present,because PLC has changed the dedicated data highway(HIG HWAY)into a general network,and gradually brought the communication protocol between PLCs closer together,PLC has the conditions to integrate with other various computer systems and equipment to form a large-scale control system.This makes the PLC system have the form of DCS.In this way,the DCS system based on PLC has been widely used at home and abroad.

目前，由于PLC把专用的数据高速公路（HIG HWAY）改成通用的网络，并逐步将PLC之间的通信规约靠拢使得PLC有条件和其它各种计算机系统和设备实现集成，以组成大型的控制系统，这使得PLC系统具备了DCS的形态，这样，基于PLC的DCS系统目前在国内外都得到了广泛的应用。