控制策略组态方法_指令衰(IL)
指令表与计算机汇编语言比较类似，系统所有的过程处理功能均可由指令表编程实现.它能实现
诸如程序跳转和循环等FBD、LAD 及SFC所无法实现的功能。操作符可被显示和键入，并提供一个符
合IEC61131 3标准的带有下拉条的操作符列表框供直接输入。指令表中也可调用功能块和FBD图中
的其它操作，功能块参数定义方法与在FBD中完全-样。
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MOL0O.
控制鐐略組态方法_梯形图(LD )
梯形图(LAD)也是1EC61131_ 3规定的一-种图形化组态语言，它起源于传统的由继电器线圈和触点
组成的反映逻辑电路电流状态的逻辑梯形图。梯形图的左右边界线分别称为供电母线和公共母线，梯
级由链接线、触点和线圈等梯形图元素构成。梯形图中同样也可调用功能块，功能块参数定义方法与
FRD中完全-样。梯形图最适于组态逻辑控制功能。
card. — The two fi810f interface cards on the redundant PS. can be switched redundantly.
S800 and S900 are distributed i/0 for process control stations. They communicate with their controllers through Prof ibusdp Fieldbus
Communication, which can be installed in the controland PA three levels, DP communication rate can be as high as 12Mb. The CAN (DIN/IS011898 standard) bus
The biggest feature is its super sturdiness and data security. The system of course also supports Modbus. The communication with the intelligent field instrument is through
IART protocol or field bus (31. 25Kb ProfibusPA and FF bus).
The system communication between the operation management level and the process control level is realized by Di giNetS network (Industrial
