Description
顺序对由触点构成的控制线路进行逻辑运算，然后根据逻辑运算的结果，刷新该逻辑线圈在系统RAM存储区中对应位的状态；或者刷新该输出线圈在I/O映象区中对应位的状态；或者确定是否要执行该梯形图所规定的特殊功能指令。
Juniper IB-OC192-SON-SR2-E – Enhanced 1 Port OC192 M160
List Price $235,000.00 – 90 Day Warranty – Free Ship!
Juniper ERX-OCXA256M-MOD ERX1440 OC3/OC12/DS3 Line Card
90 Day Warranty – Free Overnight Shipping
IBM 6-way 600MHz RS64 IV Processor 16MB RS6000 21P4511
Juniper M5 Router AC PE-1GE-SX M5BASE-AC-E RE333-768
90 Day Warranty – Free US Shipping!
