描述
使用继电器电路或PLC的梯形图可以实现开关量的逻辑运算。图1—4的上面是PLC的梯形图，梯形图中某些编程元件(如输出继电器和辅助继电器)的线圈“通电”时，其常开触点闭合，常闭触点断开，称该编程元件为1状态。当它们的线圈“断电”时，其常开触点断开，常闭触点闭合，称该编程元件为0状态
RELIANCE REEVES MOTODRIVE HP 3 GEAR RATIO 31.4 W/ MOTOR
Reliance Electric 603515-5A Tach Assy Used
Shelf Reliance THRIVE 1 Year Supply 4,868 Total Serving
RELIANCE ELECTRIC 45C-400A USPP 45C400A
RELIANCE ELECTRIC 2GU41010 GP2000 10HP 460V AC DR*XLNT*
RELIANCE 240ER4060/GV3000E-AC024-AA-DBU AC DRIVE *NIB*
0-51805-3 PIAD RELIANCE FACTORY REFIRBISHED 0518053
RELIANCE 0-57411-2L/57C411 RESOLVER INPUT MODULE**NIB**
RELIANCE AUTOMAX 0-57401-2 DIGITAL I/O MODULE **NIB**
RELIANCE 57C418/0-57418 AUTOMATE INTERFACE MODULE *RFB*
RELIANCE PC BOARD CARDPAK LINEAR VOLTAGE TIME 0-49005-4
RELIANCE ELECTRIC 0-57412-D FIELD REGULATOR ***RFB***
