HMI是人機界面的簡寫，它為PLC控制系統(tǒng)、I/O或者其他控制系統(tǒng)提供一個人性化的操作界面，而人機界面則通過RS232、485、MODBUS、CAN總線等協(xié)議與這些控制系統(tǒng)交互數據與控制信號。由于這種交互是實時的，這就使得HMI(人機界面)實現了下面的關鍵功能：

1、實時監(jiān)控PLC、I/O的運行，并在HMI上形象地顯示出來;

2、操作者可以通過HMI向自動化設備發(fā)出控制信號，使得自動化設備可以按照操縱者的意圖運行。

人機界面(HMI)的應用域決定了它必須具備下列特性：

1. 人機界面(HMI)必須具備和各種自控設備交互數據的能力，這需要HMI集成各種型號的PLC、I/O、各種總線協(xié)議等自控設備的通信協(xié)議;

2. 人機界面(HMI)應該提供一個工具軟件，供客戶開發(fā)基于特定控制系統(tǒng)定制相應的應用;

3. 人機界面(HMI)必須是工業(yè)的產品，能夠適應工業(yè)應用環(huán)境，具有可靠的質量和的性能。

Halliburton Services 991.42351-CHG A, 99142351CHGA, CR-38, SHIPSAMEDAY#1225AC

Halliburton Services 991.42351-CHG A, 99142351CHG, CR-38, SHIPSAMEDAY#1225AA

H&B TES 20, Hartmann & Braun TES20, Shipsameday #1225A

Gyrolok Nut & Ferrule 1/2" , 8SCNF316, Lot Of 15, SHIPSAMEDAY#1551K7

Gudel FR 15 ZA, FR15ZA, 900719, FR-15-ZA, Shipsameday #1618C2

GRUNDFOS Recirculation Pump 115V, 3/4" MPT x FPT, 59896288P1, UP15-10SU7P/TLC

GROUPE SCHNEIDER SYMAX MODULE DELUXE 4OUTPUT, 8030-DOM-221, Shipsameday #1211E

Greenlee Conduit Splitter Punch 2", 502816 & 5028165, Chip Conner, RACK L #L42

Greenlee 60009 & 60008, Punch 3/4" Square, Shipsameday #1326J

Greenlee 1-1/2", 5006978, 5004061, 5004040, knockout punch die & draw stud # G

Green Pot PP-7FL-1, PP7FL1, 1k Ohm, 24.5 MPa, SHIPSAMEDAY #1622AW

Grayhill SWITCH ROTARY 2-4POS 150MA 115V, ?50DP90-01-1-AJN, LOT OF 8 #1540Q3

Grayhill 70MRCQ24-HS, I/O MOUNTING BOARD MINI 24POS, Shipsameday Rack L #L53

GRANVILLE-PHILLIPS MICRO-ION GAUGE, 355001-YB, SHIPSAMEDAY#1535E2

GRANVILLE-PHILLIPS 275 MINI CONVECTRON, 275538-GD-T, SHIPSAMEDAY #1610TK

GRANVILLE-PHILLIPS 275 MINI CONVECTRON, 275507-EU, SHIPSAMEDAY #1609C2

Granville-Phillips 275 mini convectron 275546-EU, SHIPSAMEDAY#102PD

Granville-Phillips 275 mini convectron 20275-636, SHIPSAMEDAY#102PB

Gould Shawmut FUSE BLOCK P292, 10 Amp, 1200VAC, Lot Of 4, SHIPSAMEDAY

GOULD SHAWMUT amptrap A120X20-1, A120X201, Lot Of 7, Shipsameday #1327N

GOULD SHAWMUT amptrap A120X20-1, A120X201, Lot Of 2, Shipsameday #1326G

Gould S975, Modbus II Comm Processor, S975-000 rev A, S975000, Shipsameday

Gould Modicon 115 VAC Output Module B230-501, B230501, SHIPSAMDAY,

GOODBYE COLUMBUS AND OTHER STORIES by Philip Roth, Franklin Library, Hardcover

GO PR1-1A11BEI111, PR1-1A11BE1111, PRESSURE REGULATOR 250 PSI SHIPSAMEDAY #ZE42

GO Back Pressure Regulator 1/4" FNPT, BP3-1A11I5D111, SHIPSAMEDAY#122Q27

GLOBE MOTOR GEARMOTOR 48 VDC, 409A824, E5-100-156-NE-S-D-D-B, SHIPSAMEDAY

Globe Motor 409A709, 24V, SHIPSAMEDAY#1616Y2

Globe Motor 409A709, 24V, Shipsameday #125A3

George Fisher Pneumatic Actuated Valve 1.25" Socket 199.223.215, No Union #153D

George Fischer diaphragm valve, 199.028.202, 3/4 SPG, SHIPSAMEDAY #1621W

GEORGE FISCHER 199.233.095 Pneumatic Actuator Type PA11/21 & Handle #102J

Georg Fischer +GF+, 018 PP/EPDM, 199.018.425, 199 018 425, 1/2" Fail Close

Genesis Vacuum Tech Pressure Relief Valve 1-1/3 CF x NW40, 0760-602600, #156AA

Generic VCR 1/4" PLUG, LOG OF 45, WHAT YOU SEE<>WHAT YOU GET, SHIPSAMEDAY#1539H3

General Electric Manual Motor Protector Rotary 10-16A, 101245, GE-GPS1BHAM #109D

Gems Sensors FS-380, 205424, Compact Flow Switch SS 3/8" .75GPM, #1372N

GEMS SENSOR RotorFlow Sensor 1/2" FNPT, 230790, SHIPSAMEDAY, BOX 1 #1603P1

GEMS SENSOR FLOW SWITCH .5 GPM, 1/2" NPT, 129660, SHIPSAMEDAY #1540KA

GEMS FS-10798, 25358, Stainless Steel, WATER .5-20 GPM, 1/2", SHIPSAMEDAY#129V20

GEMS BRASS FLOW SWITCH 168434 & GC SOLENOID 3/8", S201PF33N5CG4, SHIPSAMEDAY

GEMS 25872, Controls Intrinsically Safe Relays Safe-Pak, SHIPSAMEDAY#1608H

Gem Conductivity Liquid Level Sensor CS1301-1, 197097, CS13011, CLS-1200 #1543BA

GE Timer Relay CR122BT02202D, 600V, 55-513696G02, Shipsameday #1641A8

GE Relay 110V, CR120B01122BNUC, 55-513696G22, Shipsameday RACK D, #D57

GE Manetic Contactor CR305A002, CR305A0, Shipsameday #1641A3

GE Lockout Switch CR6960073G2, 1D92G3, Shipsameday, W/2-3 Daysshipping #1653BS

GE Indicating Light Kit CR205X205, Shipsameday W/2-3 Daysshipping #1641A34

GE General Electric BOARD STATOTROL, 193X637ACG04, 36B605092, SHIPSAMEDAY #166