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。
Expedited shipping available
Fireye MAUV1 Amplifier UV M-Series2 2-4Second FFRT NEW
Expedited shipping available
Fireye MEUV4 UV Amplifier Module FFRT 4 Second Max
Expedited shipping available
NEW FIREYE 60-1508-2 OFF DELAY TIMING MODULE BOARD CARD
One-day shipping available
FIREYE MT30-10 PURGE CARD 30SEC.T.F.I. 10 SEC MAX, NIB
*NIB* Fireye 30 Second Prepurge Timer MT30-10 *NIB*
Fireye Flame Signal Meter
Fireye Flame Signal Meter
Fireye Flame Signal Meter
Qty2- Fireye Cable Adapter Board ED610- Flame Monitor
Fireye 60-1765 MM-2 Adapter for R4795 601765 New
