值曲线显示，画
面操作简单，允许的操作如切換操作方式及在线修改设定值等。在手动方式下可改变对原组态的设定
点的偏置:大小来定义手动设定值，也可随时恢复原始设定值.设定值时间函数程序可反复循环执行，
也可指定运行次数。
趋势显示和归档
模拟和数字过程变量随时间的变化过程可以趋势画面进行显示并归档存储。ABB Industial”DCS
控制系统的实时趋势显示和历史趋
offers very flexible options. Each PS allows to insert 4 fieldbus interface cards (the card type can be different),
Each card is connected to 1 field bus to collect process data and diagnostic information from the bus, the interface card is easy to replace and plug and play
(Plug & Play), and can be plugged and unplugged.
The field controller PS has the following characteristics:
o
Flexible: supports all international standard open fieldbuses and can be mixed
Simultaneous connection of 4 high-speed fieldbuses (max. 12 MBd)
Simple engineering: configuration, commissioning and
