福建中立恒自动化设备有限公司

目前，世界上有200多个厂家生产可编程序控制器产品，厂家有德国的西门子，美国的Rockwell(AB)、通用(GE),日本的三菱、欧姆龙，法国的施耐德等。

可编程序控制器总的发展趋势是向高集成度、小体积、大容量、高速度、易使用、高性能方向发展。具体表现在以下几个方面：

(1)向小型化、专用化、低成本方向发展

20世纪80年代初，小型PLC在价格上还高于小系统用的继电器控制装置。随着微电子技术的发展，新型器件大幅度的提高功能和降低价格，使PLC结构更为紧凑，功能不断增加，将原来大、中型PLC才有的功能移植到小型PLC上，如模拟量处理、数据通讯和复杂的功能指令等，但价格不断下降，真正成为继电器控制系统的替代产品。

(2)向大容量，高速度方向发展

大型PLC采用多微处理器系统，有的采用32位微处理器，可同时进行多任务操作，处理速度提高，特别是增强了过程控制和数据处理的功能。另外，存储容量大大增加。

(3)与计算机联系密切

从功能上看，PLC不仅能完成逻辑运算，且计算机的复杂运算功能在PLC中也进一步得到利用，从结构上看，计算机的硬件和技术越来越多地应用到PLC；从语言上看，PLC己不再是单纯用梯形图语言，而且可用多种语言编程，如类似计算机汇编语言的语句表，甚至可直接由计算机语言编程；在通讯方面，PLC与计算机可直接相连并进行信息传递。

(4)发展多样化

可编程序控制器发展的多样化体现在3个方面：产品类型、编程语言和应用领域。

(5)模块化

PLC的扩展模块发展迅速。功能明确化、专用化的复杂功能由专门模块来完成。主机仅仅通过通讯设备向模块发布命令和测试状态，这使得PLC的系统功能进一步增强，控制系统设计进一步简化。

(6)网络与通讯能力增强

计算机与PLC之间以及各个PLC之间的联网和通讯的能力不断增强，使用工业网络可以有效地节省资源、降低成本、提高系统可靠性和灵活性，致使网络的应用有普遍化的趋势。

(7)多样化与标准化

生产PLC产品的各厂家都在大力度地开发自己的新产品，以求占据市场的更大份额。因此产品向多样化方向发展，出现了欧、美、日多种流派。与此同时，为了推动技术标准化的进程。一些国际性组织，如国际电工委员会(IEC)不断为PLC的发展制定一些新的标准，如对各种类型的产品作一定的归纳或定义，或对PLC未来的发展制定一种方向或框架。

(8)工业软件发展迅速

与可编程序控制器硬件技术的发展相适应，工业软件的发展非常迅速，它使系统应用更加简单易行，大大方便了PLC系统的开发人员和操作使用人员。

可编程序控制器的输出信号类型可以是开关量、模拟量和数字量。输出单元从广义上分包含两部分：一是与被控设备相连接的接口电路，另一部分是输出的映像寄存器。

PLC运行时CPU从输入映像寄存器读取输入信息并进行处理，将处理结果放到输出映像寄存器。输出映像寄存器由输出点相对应的触发器组成，输出接口电路将其由弱电控制信号转换成现场需要的强电信号输出，以驱动电磁阀、接触器、指示灯等被控设备的执行元件。

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 (2DM S FIBRE METAL A-P451H-11 HEAT TREATED WIDE VISION GLASS FILTER PLATE

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GE SIZE 1 ENCLOSED MOTOR STARTER 600 VAC 115-120V COIL 3∅ 27 AMP CR306C0**

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 COLUMBIA LENSED 32W TROFFER BALLAST LIGHT FIXTURE JT822-232U6G-FSA12-EU

  FALK 1080T HUB 2.1875 BORE 1/2 X 1/4KW 710917

  FOSTORIA MODULAR LOADING DOCK LIGHT 120V 300W MAX DKL-INC

 SILENT KNIGHT / HONEYWELL IDP-RELAY MODULE RELAY ADDRESSABLE

RADIONICS D7044 SIGNALING DEVICE

 CUTLER HAMMER SIZE 0 ENCLOSED MOTOR STARTER 120V COIL 600V 5 HP 3Ø AN16BN0

FOXBORO ELECTROCHEMICAL RESISTIVITY ANAZLYZER 120 VAC 873RS-AIWCGZ

  ALLEN BRADLEY 3' FLEX I/O INTERFACE CABLE ASSEMBLY 4100-CCF3 SERIES A

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 MAC 111B-611BA SOLENOID VALVE 24 VDC 3 WAY 8.5 WATT 150 PSI 20521

EATON CLAMP ECOLINE XVS11 EATON ECOLINE FILTER HOUSING STAINLESS 8" I.D

 SIEMENS SIMATIC S7 DIGITAL OUTPUT MODULE 6ES7 322-1BL00-0AA0

DM S SIEMENS SIMATIC S7 DIGITAL OUTPUT MODULE 6ES7 322-1BL00-0AA0

 ALLEN BRADLEY 25 AMP REVERSING STARTER 3Ø 600 VAC 7.5 HP 24V COIL 100-C09*10

YAMATAKE-HONEYWELL J-AOM10 ANALOG OUTPUT MODULE W/ J-RRK03 CABLE

YAMATAKE-HONEYWELL J-UDM00 DIRECTOR MODULE 24VDC 200mA

  JOHN CRANE INDUFIL STAINLESS STEEL FILTER 8" TALL MTC-Z-00200-API-GF3-V

 J.D GOULD 1/2" AIR  WATER SOLENOID VALVE 5-125 PSI 120 VAC M3V

ASCO 1/2" VALVE 120 VAC 1/2" 2 WAY VALVE EF8030A017

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 PARKER 1/8 NPT SOLENOID VALVE 3 WAY PARKER G RING 02F30C110AAF4C01

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SCHNEIDER TELEMECANIQUE ALTIVAR 5 HP INVERTER DRIVE .37kW 240VAC 3Ø ATV312H037M2

 HONEYWELL 51308112-008 LCN COAX CABLE SET 8M REV D

 GURLEY PRECISION INSTRUMENTS ENCODER 8335-11250-CO8A-KZ

M-SYSTEM M-IT MODEL PV P/I TRANSDUCER PV-A-D/A3/P7 3-15 PSIG 115VAC 4-20mADC

 SENSOTEC B231-01 AMPLIFIED TRANSDUCER 0-10 H20 SAFE O/L 50 H20 060-B231-01

EAGLE SIGNAL CYCL-FLEX 60 SECOND TIMER 120/240 VAC HP51A612

  ORIENTAL MOTOR E2440-324 SPEED CONTROL MOTOR 115 VAC 6 WATT 2 µF

EMERSON SOLA 5.6 AMP POWER SUPPLY 100/240 VAC 24-28 VDC SDN 20-24-100C

 SIEGER BIAS 1 GAS ALARM SYSTEM / GAS DETECTION CONTROL IT 02601-A-8001

BREUER TORNADO BASE S39830 11407

 ENDRESSHAUSER PMC41-MC25F4A21N1 PRESSURE TRANSMITTER CERABAR M

ALLEN BRADLEY POWERFLEX 4 1.0 HP AC DRIVE 3Ø 380-480 VAC 22A-D2P3N104

 ALLEN BRADLEY POWERFLEX 4 1.0 HP AC DRIVE 3Ø 380-480 VAC 22A-D2P3N104

  ANDERSON GREENWOOD M5VIS-46-SG-SS NEEDLE VALVE 3/4" x 1/2" 316SS 6000 PSI

  BREWER MACHINE  GEAR SHAFT MOTED TENSIONER AM16

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YASKAWA VS MINI DIGITAL OPERATOR JVOP-120 CIMR-XCBA40P7 3PH 400V 0.75kW CB

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 SIMPLEX ELECTROMAGNETIC DOOR HER SURFACE WALL MOTED 120 VAC 2088-9583

GE CR306CX# NEMA SIZE 1 600V 300-LINE CONTROL Magnetic STARTER 230-240V COIL

  DODGE CAST IRON 2-BOLT FLANGE MOT BALL BEARING 1.8125" BORE F2B-SC-113

 ASHCROFT DURAGAUGE 0-400 PSI 1/4" BOTTOM MONEL TUBE SKT 45-1279-PSL-04L-400#

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DM SVISHAY VSKT250-12PBF SCR MODULE AMETEK 03-625112-00

GLYNN- JOHNSON PADDLE LOCK IR SECURITY TECHNOLOGIES HL.10038

VICKERS 584629 VANE PUMP CARTRIDGE

DM SVICKERS 584629 VANE PUMP CARTRIDGE

 GENERAL ELECTRIC MOTOR STARTER SIZE # 1 COIL 120VAC C184A OVERLOADS

 JACOBY TAR 1" BRONZE SIGHT FLOW INDICATOR TAC12B 150 PSIG MAX 300 MAX TEM

 SEALMASTER 1-7/16" TAKE UP BEARING STMH-23 711663

 GENERAL ELECTRIC CR324F OVERLOAD RELAY 135 AMPS 3 POLE 600V

ITT CONOFLOW GVB12 PNEUMATIC RELAY

CUTLER HAMMER FLOW SWITCH 10037H8B 600V MAX PILOT DUTY 32-550 VAC/DC

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 SCOTT 4600MB GAS PLUS IVERSAL GAS TRANSMITTER HAZARDOUS LOCATION 24 VDC

THERMOWELD M-7643 M CRE-3 4/0 STR TO #5 REBAR

SCHNEIDER 1/2 HP VARIABLE SPEED DRIVE 0.37kW 240V AC 1Ø ATV12H037M2

DM SSCHNEIDER 1/2 HP VARIABLE SPEED DRIVE 0.37kW 240V AC 1Ø ATV12H037M2

FOSTORIA DLK DOCK LIGHT 120V WITH ARM AND MOTING BRACKET DLK-24 DLK24

 TORQ-KIT VSP PIPE 316STAINLESS FLANGE ASSEMBLY KIT NPS 2" 600# STUDS, NUTS

 RED VALVE 2" STAINLESS STEEL PINCH VALVE SERIES 2633

 MASTER PNEUMATIC ASSEMBLY BFD50-2 WITH REGULATOR R100-2SR343 0-15 PSI

  DIAMOND CHAIN COMPANY 50-2 RIVET ANSI STANDARD CHAIN 10 FT RSC502R3.05M

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 SPECTRA PHYSICS SP400 HANDHELD LASER SCANNER 180002-204000

IDEC FL1D-H12SND SMART RELAY REPLACED BY FL1F-H12SCD 24VDC

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TOTO CONVEX PUSH PLATE DUAL BUTTON CHROME PLATE PUSH BUTTON PLATE TY820#CP

DM STOTO CONVEX PUSH PLATE DUAL BUTTON CHROME PLATE PUSH BUTTON PLATE TY820#CP

AUTOMATED LOGIC 002485 SINGLE SOURCE CIRCUIT BOARD CARD FIRE ALARM 24VAC

RED LION CONTROLS DT11D 120VAC DIGITAL PANEL METER

  AMTEK VOLTAGE SENSING CIRCUIT BOARD 104558501-A REV A

 MASTERCOOL 98230 ELECTRONIC CHARGING MODULE

 ALLEN BRADLEY 800H-NP37 HEAVY DUTY POTENTIOMETER

PARAMETRICS INC. SOLID STATE D.C MOTOR CONTROL 2300B

  BAILEY 23 INPUT AUCTIONEER 6624539J1

 SENSAPH400 REMOTE MONITORING SYSTEM FGD-0400

 AGIE IMC-03C INTELLIGENT MOTOR CONTROLLER 617.671.3

  RIDGID PIPE REAMER C2-1/4" WIDTH 4"LENGTH 2-5/8" INTERNAL MOT

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HUBBELL COPPER CONTACT KIT FULL VOLTAGE MAGNET CONTROL HC59672001

BRASCH LSS-2A-06 STEP CONTROLLER

 THOMSON AIRPAX STEPPER MOTOR C57L048A19-S 4.5 VDC 4 WIRE 3/8" SHAFT

 MTM POWER HMG15 24S05 15 WATT DC TO DC POWER SUPPLY 902215-00501R

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AMETEK PITTMAN GM9214E199-R1 GEARMOTOR 24VDC 19.7:1 RATIO

HONEYWELL REDDANT NET INTERFACE TC-CCR012 REV D01 97042275-A01 FWR C3.10

 MTS TEMPOSONICS LDT POSITION SENSING SYSTEM 375001010 ROU0090

CUTLER-HAMMER SIZE M0 MANUAL MOTOR STARTER 230 VAC 3 HP B100M0CX

 SOLARTRON DIGITAL DISPLACEMENT SENSOR DT10P 971218

 ITT SOLENOID VALVE GAS 300 PSI 110/120 VAC .170A S401AF02V1CF5

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DM SSWAGELOK BRASS B-600-2-8R ION ELBOW 3/8" TUBE X 1/2" NPT 90º LOT OF 7

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 STI SS-2441 EMERGENCY EXIT BLUE STOPPER STATION W MINI STOPPER 11

NOVAR MINIO CONTROL BOARD 24 VAC 737200000

 BENTLY NEVADA 4 CHANNEL RELAY I/O MODULE 125720-01

 GE FANUC MIXED 24 VDC 20-PT INPUT 2 AMP 12-PT OUTPUT RELAY IC200MDD840F

ACCU-SORT AL50 ENHANCED INTERFACE MODULE 0111633001

 IBM INDUSTRIAL 5 SLOT RIARD 5 ISA 2 PCI PART NO 02K1392 / FRU 02K3652

YAMATAKE-HONEYWELL J-DIM00 DIGITAL INPUT MODULE

YAMATAKE-HONEYWELL J-AOM70 DIGITAL INPUT MODULE

YAMATAKE-HONEYWELL J-AOM10 ANALOG OUTPUT MODULE

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DM SGENUINE HP 126A LASERJET INK CARTRIDGE CE313A CE311A MAGENTA CYAN LOT 2

 FAINFIR ANGULAR CONTACT SINGLE ROW THRUST BEARING 70MM X 150MM X 35MM 7314PW