From the current DCS point of view,a controller completes the operation of dozens of loops and the acquisition of hundreds of points,plus an appropriate amount of logic operation,the effect is relatively good after on-site use.This creates the problem of controller upgrades.Sometimes the distance between the controller and the detection element is still relatively far,which promotes the development of the field bus.Fieldbuses such as CAN,LOONWORKS,FF,etc.,and HART protocol receiving boards are all used in the DCS system.
从目前的DCS来看,一个控制器完成几十个回路的运算和几百点的采集、再加适量的逻辑运算,经现场使用,效果是比较好的。这就产生控制器升级的问题了。有时控制器和检测元件的距离还是比较远,这就促进现场总线的发展。如CAN、LOONWORKS、FF等现场总线,以及HART协议接收板等都用到DCS系统中。
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