可编程控制器的定义
　　可编程控制器，简称PLC（Programmable logic Controller）,是指以计算机技术为基础的新型工业控制装置。在1987年国际电工委员会（International Electrical Committee）颁布的PLC标准草案中对PLC做了如下定义：“PLC是一种专门为在工业环境下应用而设计的数字运算操作的电子装置。
它采用可以编制程序的存储器，用来在其内部存储执行逻辑运算、顺序运算、计时、计数和算术运算等操作的指令，并能通过数字式或模拟式的输入和输出，控制各种类型的机械或生产过程。PLC及其有关的外围设备都应该按易于与工业控制系统形成一个整体，易于扩展其功能的原则而设计。”

Numatics, 230-260, Valve Solenoid Cable Connector 230260
Numatics, 237-261B, Solenoid Valve with 031SA4000 Manifold
Numatics, 239-1305, G2-2 Devicenet Valve Manifold 4-Input Module Control PNP
Numatics, 239-1835, 239-1229, Pneuamatic Valve Manifold Terminal Strip
Numatics, 34HLS4410, Hand Lever Valve
Numatics, 4FCRN, Flow Control Valve Adjustable
Numatics, 554BA432MT00061, 554BA400MT00061, Solenoid Valve
Numatics, 554SS400K000030, Solenoid Valve 150psig
Numatics, EKF608C, Filter Element
Numatics, HPNPQ31, Sensor Hall Effect Sensor Switch
Numatics, I34SA400K000030, Pneumatic Air Solenoid Manifold Valve 150psi
Numatics, L23BA452B000061, Pnuematic Air 4-Way Valve
Numatics, L23LA652O000000, Pneumatic Manual Control Pnuematic Lever Valve 4 Way
Numatics, L50L-04S01, Lubricator W/ Level Sensor
Numatics, LR3-0201, Sentinel Line Limit Valve
Numatics, NRG050S1ZC1, Synchronous Robot Pnuematic Gripper SJ-554423-1
Numatics, PE3-0001, Numatrol Pneumatic Valve Manual Control
Numatics, REED-FL2-00, Cylinder Position Proximity Sensor Reed Switch
Numatics, SR6-022, Reed Switch
Numatics, SR6-022, Reed Switch
Numatrol, TM0-2105, Pneumatic Timer Actuator Valve w Base
Nycoil 65230 Nylon Tubing 5/32 OD X .025Wall 500Ft
Nycoil G3C-BS Blowgun Booster Tip Chrome 1/4-18NPT Inlet Air Gun Pneumatic
Oberdorfer, N1000R-66, KJD Rotary Gear Pump Pedestal Relief Valve N1000R66
Ocean Optics Inc. QBIF600-2-UV/VIS
Ohma Centerline, 8719-RH-25-20AZ1, Pneumatic Cylinder Spot Welding Welder Weld
Ohma, SKW807019Z00, Centerline Seal Kit 8719-SK
OHMITE 270-225P-46 Resistor 0900F 4Ohms 225W
Ohmite D100K5R0 Resistor 5 Ohms 100W
Ohmite lug resistor L225J7K5 225w 7500 ohm 225 watt
Ohmite RKS100 Rheostat Wirewound 100ohm 100w 100 watt ohm Potentiometer
Ohmite, D75K250, Power Braking Resistor 250Ohm 75W
Ohmite, RV4NAYSD504A, Potentiometer Pot Resistor CMU5041
Oiles America NAF0*-05D Cam Aeriel 50mm Deg 5　?
Oiles Corporation NAF0*-60D Stamping Die Component
Oiles, SFP-75250, Graphite Filled Self Lubrication SP Flat Plates Bearing
Ojiden, OFL-1-SM2.C, Foot Switch 10A 250VAC
Ojiden, OFL-1-SM2.C, Foot Switch 10A 250VAC
OKI Plasma Display DSA3208CR-L Model 4 Display Controller QDA-10071-1
Olympus 4580HDS Sony S-Vid Cable
Omega CN2001J-AT Microprocessor-Based Controller T/C temperature thermocouple
Omega CN882K-500F Temperature Controller 115V
Omega Dp461-E Digital Process Panel Meter 115VAC
Omega Dp461-E Digital Process Panel Meter 115VAC
Omega DP-773-2-4 Digital Panel Voltmeter .1A 115V
Omega element surface probe 88001 88002 88101 88003
Omega L-0044K Precision Fine Wire Thermocouple 36 -Length
Omega OM9-31382AFA1 AC Current Voltage Transducer True RMS Measurement 0M9
Omega OM9-32 RMS AC Power Transducer .2% 248932-362-AFA-1 Voltage 32362AFA1
Omega PX176-1KS5V 1000 psis Cable Style Pressure Transducer Sensor
Omega solid state relay SSR ED-62150-4 output 62138-72g
Omega TX1505 Isolated 4 to 20 mA Transmitter Low Drop Isolator
Omega, 5TCTTK3072, Thermocouple Precision Fine Wire pack of 2
Omega, 5TCTTK3072, Thermocouple Precision Fine Wire pack of 5
Omega, 6132-J-0 300C, 6100 6102 Series Temperature Controller Type J 0-300deg NE
Omega, 920-EXB, Extender Card for D921 Series Controller 62137-201C 8603
Omega, CN77333-C2, Digital Temperature Controller Control CN77333 90-240V 7W 020
Omega, CN9121A, Miniature Autotune Temperature Controller
Omega, CNi3222, 4500798, Temperature Controller 90-240V
Omega, DP41-TC, Thermocouple Panel Meter Temperature Controller Control Digital
Omega, DPF701-01, Totalizer Digital Counter Controller 115V 11.5W
Omega, DPS3207-P-3, Programmable Process Scanner Temperature Digital
Omega, DRG-AR-AC, Input Limit Alarm
Omega, FP-5061, Micro Low Flow Sensor .03 GPM 5-24VDC
Omega, iDRN-ST, Signal Conditioner With RS232C Communication
Omega, PSW-525, Miniature Pressure Transducer Sensor Switch 1A 115VAC 500psig NE
Omega, PX142-005D5V, PX140 Vacuum Pressure Transducer
Omega, PX202-200GV, Thin Film Millivolt Output Pressure Sensor Probe 200psig
Omega, PX215-015GI, Pressure Transducer Sensor
Omega, SSR240DC45, 45a 45 Amp SSR Solid State Relay 3-32VDC
Omni 375-02-007-67 Solenoid Valve 24VDC 30-150psi 26E01039 Coil
Omron, 60673-0100, STi Cable Transmitter Receiver Connector Wire Plug Cordset 5
Omron, G7S-4A2B-E, Relay 24VDC
Ono Sokki MP-910 Magnetic Rotation Detector　$120
Ono Sokki, LD-1110M-020, Laser Displacement Meter
Opto 22 AC24 AT PC Adapter Card
Opto 22 G4 AD4 I/O Analog Module
Opto 22 G4 DA5 I/O Module 0-10VDC Output
Opto 22 G4AC5 Adapter Card
Opto 22 G4-AD3 Input Module 4-20 MA Analog
Opto 22 G4LC32SX Classic SX Controller
Opto 22 IAC5Q Input/Output Module
Opto 22 IDC5 I/O Module
Opto 22 IDC5Q I/O Module
Opto 22 IDC5Q I/O Module
Opto 22 OAC5Q Output Module
Opto 22 OAC5Q Output Module
Opto 22 PB16A 16 channel I/O logic module
Opto 22, AD3, Input Module 4-20ma
Opto 22, AD6, AD-6, I/O Analog Digital Module 0-5V
Opto 22, DA8, Analog Input Module