描述
PLC主要由CPU模块、输入模块、输出模块和编程器组成(见图1），有的PLC还可以配备特殊功能模块，用来完成某些特殊的任务。
CPU模块主要由微处理器(CPU芯片)和存储器组成。在PLC控制系统中厂CPU模块相当于人的大脑，它不断地采集输入信号，执行用户程序，刷新系统的输出；存储器用来储存程序和数据。
Okuma OSP3000 PC-1662-E INR Board E4809-032-397-E
Square D Combination Starter 8538-SCA24 8538SCA24
Baldor 3 Phase Industrial Motor, # BM3714T, WARRANTY
Magnetek 1.5 HP DC Motor w/ Reliance Master XL Speed Re
Sugino Selfeeder Mechatric Self-feeding Drill
Sugino Selfeeder Mechatric Self-feeding Drill MSX-113S
G E 1/3HP Adj Speed Motor w/ Right Angle Gearbox & Cont
FANUC Bubble Memory Board, A16B-1211-0091 /06C WARRANTY
FANUC Bubble Memory Board, A16B-1211-0091 /07D WARRANTY
Square D 20 KVA 3 Ph Transformer 20T145HDIT WARRANTY
24-3/4″ Cast Iron Face Plate, D1-8″, 5-3/8″ Hole, NEW
