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。遇到程序跳转指令，根据跳转条件是否满足来决定程序的跳转地址。从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，根据用户程序进行逻辑运算，存入有关器件寄存器中。对每个器件来说，器件映象寄存器中所寄存的内容，会随着程序执行过程而变化。
Tol-O-Matic BC3 Pneumatic Rodless Actuator Band Cylinde
Welker Bearing Shot Pin C/W Pneumatic Cylinder
US Gauge Process Gauge & 316SS Diaphragm Seal 3Pcs
1 Lot FAG Taper Bearing Cups 33Pcs
Nordson 327026 Pump Assembly
Eaton Power PCBAS K15LV 2PH PW Board
Eaton Power K15LV 2PH I/O Board
Whitey 1/2″ SS Ball Valve C/W Electric Actuator
Caloritech Max Explosion Resistant Convection Heater
Eaton Power PWB Assembly
RADVISION SCOPIA videoconference MCU SP 55888-00601 New
Topcon GTS-722 Total Station USED
Alcatel-Lucent LSC16G1X module CRTUAAMCAA New
KANE-MAY Quintox KM9106 FLUE GAS ANALYZER Used
