描述
根据PLC梯形图程序扫描原则，按先左后右，先上后下的步序，逐句扫描，执行程序。但遇到程序跳转指令，则根据跳转条件是否满足来决定程序的跳转地址。若用户程序涉及到输入输出状态时，PLC从输入映象寄存器中读出上一阶段采入的对应输入端子状态，从输出映象寄存器读出对应映象寄存器的当前状态。根据用户程序进行逻辑运算，运算结果再存入有关器件寄存器中。
Allen-Bradley Dynamic Brake Resistor 1370-BDH69 x2 NIB
Allen Bradley 112-DABX Combination Starter 600VAC ! NEW
NUMATICS 256-665 | 256-930 16Point Input ! NEW !
Omron Guard Lock Safety-Door Switch D4JL-3NFA-C6 ! NEW
AEG MODICON BRUSHLESS SERVO MOTOR 120-087-001 !!!!!!!!!
Honeywell Temperature Controller 55-175F T991A 1194 NIB
SQUARE D 9422TF2 200A 600V Disconnect Switch ! WOW !
Rexroth 3360150000 Mecman Pneumatic Valve 05W31 ! NEW !
Allen Bradley 1746-HSCE2 High Speed Counter ! WOW !
Klockner Moeller Motor Contactor DIL4M 160A ! WOW !
Siemens Simatic Central Controller 6ES5-101-8UU43 ! NEW
Cutler Hammer Dry Distribution Transformer S60G11576N !
Maxitrol Selectra Modulating Valve MR212D ! NIB !
AUTOMATION DIRECT DP-C321 Operator Interface Panel WOW
Bernecker & Rainer Input Module Analog ECPE82-1 ! WOW !
