Description
根据梯形图中各触点的状态和逻辑关系,可以求出与图中各线圈对应的编程元件ON/OFF状态,称为梯形图的逻辑解算。逻辑解算是按梯形图中从上到下、从左至右的顺序进行的。逻辑解算是根据输入映像寄存器中的值,而不是根据逻辑解算瞬时外部输入触点的状态来进行的
Free Worldwide Priority Shipping – 90 Day Warranty
Nokia NIF4571000 2PORT COPPER GIGABIT ETHERNET ADP
90 Day Warranty – Free Overnight Shipping!
Redback OIM-SE8-4OC12IR-SM SE800 4 x OC-12c/STM-4c POS
90 Day Warranty – Free Overnight Shipping!
NEW Nortel Passport 8624FXE Routing Sw Mod DS1404037