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3 可编程序控制器在我国的发展

    我国可编程序控制器的发展与国际上的发展有所不同，国际上可编程序控制器的发展是从研制、开发、生产到应用，而我国则是从成套设备引进、可编程序控制器引进应用、消化移植、合资生产到广泛应用。大致可划分为下述三个阶段：

    (1) 可编程序控制器的初级认识阶段（70 年代后期到 80 年代初期）

    国际上可编程序控制器的发展，首先引起了国内工程技术界的兴趣，所以我国对可编程序控制器的认识始于 70 年代后期到 80 年代初期的成套设备引进中，当时的上海宝钢一期工程中有多项工程引进了十几种机型约 200 多台可编程序控制器。这些可编程序控制器用于原料码头到高炉、轧钢、钢管等整个钢铁冶炼以及加工生产线上，取代了传统的继电器逻辑系统，并部分取代了模拟量控制和小型 DDC 系统。继宝钢一期工程后，国内许多厂家陆续引进的设备和生产线大都配备了可编程序控制器，其应用范围包括电站、石油化工、汽车制造、港口和码头等各领域。正是在成套设备引进过程中，我们打开了眼界，了解认识了可编程序控制器，这也了可编程序控制器在我国的发展。

    (2) 可编程序控制器的引进应用和消化移植阶段（80 年代初期到90年代初期）

    80年代初期开始，随着我国改革开放的不断深入，在成套设备引进的同时，国外原装的可编程序控制器开始涌入国内市场。许多部门和单位相继引进可编程序控制器并自己设计组成控制系统，其应用范围也扩大到建材、轻工、煤炭、水处理、食品、制药、造纸、橡胶和化工等工业领域。

Aro Excess Flow Check Valves 23605-500, 23605500 SST, 3/4 1633K

Honeywell SENSOR PRESS VAC GAUGE 100PSI, 19C100PV2K, SamedayShipping1474AP

SMC CDU2525DA93, CDU25-25D-A93, Shipsameday 1177A41

SMC VPS2135021T, VPS2135-021T, Shipsameday 1177A33

Asco Solenoid Valve 24V, 8340A1, 8340A1-24V, Shipsameday1372A8

Nupro SS-4C-VCR-50,  50PSI ShipsamedayW/2-3days Shipping B1

Cutler-hammer Manual Motor Protector A307LN, Shipsameday 1643F

Asco Solenoid Valve 120V, 8320A175, Shipsameday1372A7

NUPRO Adjustable Pressure 50-150 PSI, SS-4CA-VCR-50, SHIPSAMEDAY Q36

Square D Pilot Light 9001-KP-1, Red & Blue, SHIPSAMEDAY1171AQ

PEPPERL&FUCHS PHOTOELECTRIC CABLE FE-IAS6S-3, FEIAS6S3, 453626 1627Z3

Telemecanique PWRE14487, 251618, Speed Regulator Shipsameday108B4

T&BTerminal Fork 22 to 16 AWG .136 Copper Tin Nylon 8 1474N

LUMBERG CABLE RK-190M-242/5M , RK190M2425M, SHIPSAMEDAY 1330H

SMC Bulkhead Union KQE08-00, KQE0800, Bag Of 10, BOTTOM RACK D D62

Parker Filter 1 Micron Model 4Z-F4T-1-SS, shipsameday, 1547C5

SWAGELOK Quick Connect Stem 1/4, SS-QF4-S-400

FESTO 192313, LR-3/8-D-7-I-MIDI PRESS REGULATOR, LR-3/8D7IMIDI, 1371Q

Telemecanique LR2-D1306, LR2D1306, 023255, ShipSameDay s1608A16

Set HAM LET FERRULE FRONT/BACK 760LBSS3/4 & 760LFSS3/4, ShipsamedayQ1

SMC Dual Rod Cylinder CXSM15-20, CXSM1520, Shipsameday1646Q4

Balluff BES 516-326-S4-C, BES-516-326-S4-C, 553701, Shipsameday1604C5

Turck Bi5-GT18-ADZ30Z2-B3331/S34, BI5GT18ADZ30X2B3331/S34, Shipsameday 1615F

Pilz PNOZ-X2.12S, PNOZ-X2.1 2S, PNOZX2.12S, Shipsameday137F42

CAPACITOR DRALORIC 11/74N.2, 100pF, 10kVA, 14Kvs, 12PD70, ShipsamedDay 1636A

Heizpatrone Heating Cartrige 137476, Shipsameday 1625E

GE TC2328 Type RB, 3 Way, Shipsameday1617B11

Rexroth R434000643 WD430011 A R434000642 Ship Same Day1653K

SMC Solenoid Valve VF5220-5G-02, VF52205G02, SHIPSAMEDAY 1555R

ATC TDU120ALA, TDU-120-ALA, Shipsameday 137H35

Samtec SSQ-108-02-S-D, SSD10802SD, Conn RCPT 16 Pos, DL, R/A, Lot Of 22 169B

SMC Speed Control 3/4 FNPT, AS500-06, AS50006, Shipsameday 170C

Timken 28580, Ship Same Day W/2-3 Days Shipping 1653A12

Nupro Valve 1/4 Tube Swagelok SS-BNS4, SSBNS4, Shipsameday V4

Fujikin ELBOW UNION 1/2, F900-L-12.7, SHIPSAMEDAYP50

Fafnir 9307K, Ship Same Day W/2-3 Days Shipping 1653A15

NUMATICS MALE Connector 1/2 NPT X 1/2 Tube, 102-023, 118P8

Allen Bradley Terminal Block 1492-JD4C,  Shipsameday1217M

Swagelok BULKHEAD UNION 3/8, SS-600-61 vs, 774LSS3/8 , shipsameday1373B5

SWAGELOK Female Branch Tee 5/8 TUBE X 1/2 FNPT SS-1010-3TTF, SHIPSAMEDAY131Q6

Fanuc A16B-1210-0940/03A, A320-1210-T946/03, Shipsameday 128A14

Fanuc A16B-1210-0020/09E, A16B1210002009E, Shipsameday 128A16

Fanuc A16B-1210-0280/02A, A320-1210-T286/02, Shipsameday 128A17

Fanuc A16B-1210-0950/02A, A320-1210-T956/02, Shipsameday 128A18

Fanuc A16B-1210-0210/02B, A320-1210-T216/02, Shipsameday 128A19

Fanuc A16B-1210-0220/078B, A320-1210-T224/03, Shipsameday 128A15

Allen Bradley 800T-J91KC1B,  SHIPSAMEDAY W/2-3 DaysShipping 1545W

GOULD SHAWMUT amptrap A120X20-1,  Shipsameday 1326G