描述
梯形图（LAD）也是IEC61131_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 級由链接线、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 FBD中完全一样。梯形图最适于组态逻辑控制功能。
RITTAL SK3302110 SK WALL MOUNT AC AIR CONDITIONER 115V
ROSEMOUNT 3000 OXYGEN PROBE CELL REPLACEMENT KIT 9 FT
RELIANCE ELECTRIC 86466-47T 8646647T RECTIFIER STACK
DEZURIK SIGNAL PANEL ASSEMBLY & SWITCH 1254670
IMO ROTARY ROTOR SCREW OIL PUMP C3EBF-200 1-1/8″SHAFT
WESTINGHOUSE 40HP AC MOTOR T FRAME 2700RPM 575V 4P 3PH
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HONEYWELL STD3000 MAU INTERFACE ASSEMBLY 51305348-100
NEW ARMSTRONG CLOSE COUPLED HYDRAULIC PUMP 4280 4030
NELES JAMESBURY 3″ SEGMENT BALL VALVE FG03CAGS6XKSGTD
PARKER HYDRAULIC PROPORTIONAL VALVE D31FSE01B4VXP035
VIKING PUMP MODEL 135 QT 135QT
