1969年，美国数字设备公司（DEC）研制出**台PLC，在美国通用汽车自动装配线上试用，获得了成功。这种新型的工业控制装置以其简单易懂，操作方便，可靠性高，通用灵活，体积小，使用寿命长等一系列优点，很快地在美国其他工业领域推广应用。到1971年，已经成功地应用于食品，饮料，冶金，造纸等工业。这一新型工业控制装置的出现，也受到了**其他国家的高度重视。1971日本从美国引进了这项新技术，很快研制出了日本**台PLC。1973年，西欧国家也研制出它们的**台PLC。我国从1974年开始研制。于1977年开始工业应用。
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QUICK CHANGE WINDOW W/ GLASS AND MECHANICAL ASSEMBLY 210674
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PROTO 6112 TORQUE MULTIPLIER
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PROMINENT 745599 MONITOR/CONTROLLER
PROFACE XYCOM 5015T 16" INDUSTRIAL TOUCH MONITOR
PRO-FACE XYCOM 5015T 15" INDUSTRIAL TOUCH MonITOR (AS PICTURED)
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PROFACE OPERATOR INTERFACE 2780025-01
PRO-FACE GRAPHIC PANEL GP577R-SC11
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POTTER & BRUMFIELD MDR-137-8 ROTARY RELAY 125V
POMPETRAVAINI TRHE 32-45/C-M/RZ PUMP w/ T-DA90L2/01 (AS PICTURED)
PNEUMATIC PRODUCTS CORP. ALARM RELAY BOARD 1218502
PMV P-2000EX ELECTRO PNEUMATIC ROTATRY POSITIONIER
