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。

   MICRO-SWITCH 15A 480V ROLLER LIMIT SWITCH BZ-2RW825T

 TELEMECANIQUE 3POLE 1N.O. 120V COIL CONTACTOR LC1-D09-10-G6

1   TELEMECANIQUE 3POLE 1N.O. 120V COIL CONTACTOR LC1-D09-10-G6

   BANNER 30V LED WORK LIGHT WL50SWL5 18757

  WILKERSON L08 POLY BOWL WITH GUARD LRP-96-736

   BRYANT 15/10A 125/250V LOCKING RECEPTACLE 7580DR

 SQUARE D 230/240VDC DC CONTACTOR COIL 51020-243-53

  RELIANCE ELECTRIC FIELD SUPPLY DCS POWER MODULE 803456-21T

   ROSEMOT 1151 PRESSURE TRANSMITTER 1151DP3S22B1 0-30"H2O 4-20MA

NOS RIS PANALARM PCB 1014-331 AN-090.0918.092 AN-090-CGFY

   WOODHEAD 6-P 20FT FEMALE CORDSET 106001A01F200

OTHERM SSD PARKER CIRCUIT DRIVE BOARD AH047423

   PTC LINK BELT PILLOW BLOCK BEARING P-B22416H

 TEMPCO 500W 230V HEATER BAND 393006

  MICRO-SWITCH CIRCUIT CARD FE-39040

 DRIVE WEB SMARTY CARRIER C2CD

   FEDERAL SIGNAL SER. A 120V STEADY GREEN LOW PRO LIGHT LP2-120G

   TEEL 13A 1/2HP FLOAT SWITCH FGSA2130T

   WIKI 2" 0-100 PSI 1/4" NPT PRESSURE GAUGE 111.12.2" 9603055

LOT OF 7    SWAGELOK 1/4" TUBE X 1/4" NPT MALE CONNECTORS SS-400-1-4

 GE GENERAL ELECTRIC DISCONNECT SWITCH FINGER CLUSTER 0282A2701G002

FOR PARTS / REPAIR EATON VICKERS DIRECTIONAL CONTROL VALVE DG4V-3S-6C-M-U-H5-60

   VEXTA 2 PHASE 1/8"/STEP 2.3A 1.7Ω MOTOR PH268-E2.3

 SCHNEIDER ELECTRIC TELEMECANIQUE MOTOR STARTER LUB12 LUCA05BL

 SUPERION ELECTRIC 2.25V 4.6A SLO-SYN STEPPER MOTOR M063-FC09

    HYSTER OEM REPLACEMENT FILTER  O-RING GASKET 305080

  NSK SELF ALIGNING BALL BEARING 1305TN

   BODINE ELECTRIC 1PH 115V 1.4A 1/9HP GEARMOTOR 34R6BFCI-W3

   ALLEN-BRADLEY PLC-5 PROCESSOR MODULE 1785-L40C15

1     ALLEN-BRADLEY PLC-5 PROCESSOR MODULE 1785-L40C15

   MAC 120V 5-PORT 2-POS SOLENOID VALVE MV-A1C-A111-PM-111JJ

   WEKSLER 30-240F RANGE ADJUSTABLE ANGLE THERMOMETER A960AF5

   FK BEARING 5/16: RIGHT HAND FEMALE ROD END F5SBZ HF5G

   EATON HYDRO-LINE HYDRAULIC CYLINDER SEAL REPAIR KIT SKN25-511-05

  TYCO MANIF VALVE M4AVIC

SET OF 2    SQUARE D MECHANICAL PLATE RESISTOR LUGS 51020-081-01

  MAGNETROL REPLACEMENT SWITCH ASSEMBLY 089-7301-002

   TPC 18MM DIN CONNECTOR W/ LED  SUPPRESSION D01234XXAM002

  ASCO 120/60V SOLENOID VALVE 8300G068RU

 ASHCROFT 0-15 PSI PRESSURE GAUGE Q-4836

   RBC HEIM 10MM BORE METRIC ROD END BEARING SMG12

   FUJI IGBT MODULE 7MBR75VR120-50

   FUJI 1:1.8/50MM CAMERA LENS CF50HA-1

   BIMBA 3/4" BORE X 1/2" STROKE SPRING RETURN AIR CYLINDER 040.5-P

  OSECO 1-1/2" PROKRGLL BUCKLING RUPTURE DISC PROKRGL15-15099-C

   PARKER CLUPPER OIL SEAL 1QTR08

LOT OF (14)   BUSSMAN BUSS FUSES GDB-630MA

   SKF ROLLER BALL BEARING 2207-2RS1

LOT OF (3)   ALLEN-BRADLEY OVERLOAD RELAY HEATER ELEMENTS N18

LOT OF (10)    PRX POWEREX POWER MODULES KE721203

  GENUINE SKF DEEP GROOVE BALL BEARING 6307-JEM

   LUMBERG 15' 3-PIN PATCH-CORD RSRK-301-638/15F

 RELIANCE ELECTRIC AUTOMAX MEMORY MODULE 0-57413-3G 57C413B

   CUTLER-HAMMER E30 KEPCAP 'BACK' PUSH BUTTON E30KB100STAMP

   MARTIN SPROCKET COUPLING SPIDER 150

   TURCK 30V INDUCTIVE PROXIMITY SENSOR BI5-G18-AP6X 4641400

   SMC 3 PORT BASE MOTED SOLENOID VALVE VQZ245-5L1

  ALLEN-BRADLEY 1.5KW 2HP POWERFLEX 40 AC DRIVE 22B-D4P0N104

   HONEYWELL SKINNER VALVE A-5-LB-2-127AB6A46

   TURCK CONDUIT ADAPTER CA-2/RKFV 40 U0941-23

 EATON 15"-L 1/2" DIA RUBBER HIGH PRESSURE HOSE ASSEMBLY 1/2FC41015

   GWB IVERSAL JOINT REPAIR KIT

   JH TECHNOLOGY TRANSMITTER JH5610D-GT1

   USG 2.5" 0-100 PSI 1/4" FILLED PRESSURE GAUGE AMK165305LG 9767215

   SYNCHRON 110V 5W 240 RPM MOTOR Z326RC-5-6

LOT OF (4)  ALLEN-BRADLEY BLUE STEADY STACK LIGHT W/BULB 855T-B24DN5

1  LOT OF (4)  ALLEN-BRADLEY BLUE STEADY STACK LIGHT W/BULB 855T-B24DN5

  ALLANSON TYPE S IGNITION TRANSFORMER 1092

   ALLANSON TYPE S IGNITION TRANSFORMER 1092

OTHERM 32-800F 100-240V CONTROLLER 849/VPR/R1/0/0/0(AJHF4)/CE/

   MARTIN HI-CAP SHEAVE 2-5V-440-SH

  ALLEN-BRADLEY 440-480V STARTER 709-A0A103

   EATON 2-POS MAINTAINED KEYED SELECTOR SWITCH 10250T15111 *NO KEY*

   APC UPS CAPACITOR BOARD ID: 7700-1301-1400

   CONSOLIDATED 10MM ID X 24MM OD X 9MM W THRUST BEARING 51100

   HONEYWELL PRESSURETROL CONTROLLER SWITCH L404V-1038-2

 IFM 36V INDUCTIVE SENSOR IIKC014BASKG/M/V4A/US-104-DRS-IIT204

   IFM EFECTOR 5 METER 4-PIN CORDSET ADOGH040VAS0005E04-E18014

  AESSEAL 60MM CARTRIDGE SEAL C.U.R.C 1HABSS0060A01P

  EATON CUTLER HAMMER 110V COIL 694-1

 VERMONT GAGE .4675 GO 1/2-20 F 2B LH .4731 NO-GO GAUGE A188

   GENUINE SKF 20MM ID X 47MM OD BEARING 6204-2RSHNR

   PARKER SKINNER COIL V5-7732-F24

  CURTIS WRIGHT (10) POP-A-PLUG P2 KIT TUBE PLUGS P2-440-S

  ALLEN-BRADLEY POWERFLEX 525 2HP AC DRIVE 25B-D4P0N114

1    ALLEN-BRADLEY POWERFLEX 525 2HP AC DRIVE 25B-D4P0N114

   SKINNER 11W 100PSI 110/120V VALVE Q53ALB2100

   ORIENTAL MOTOR GEAR HEAD 5GU180KB

 ENDRESS  HAUSER VIBRATROL LEVEL CONTROL LS-M1700

   YOKOGAWA 2.5" 0-50V DC PANEL METER 251220NTNT

   LEEDS  NORTHRUP PREAMP CIRCUIT CARD REV.G 445858

   GUARDIAN 24V CONTINUOUS SOLENOID 11HD-C-24

 AMETEK GEMCO 1NO/1NC LIMIT SWITCH 1950-1-B-A-AO

   BOWER/BCA 1-1/8" BORE TAPER ROLLER BEARING 15590

   THOMSON 6" STROKE ACTUATOR LIFT ARM 7827142

   RELIANCE .5-1.5H 230V 5HP DYNAMIC BRAKING KIT 705385-61T 14C216

   BECKMAN INDUSTRIAL 01931-FL

   GORMAN-RUPP MECHANICAL SEAL 03E1-B

 SICK 10-30V 9MM RANGE CONTRAST SENSOR NT6-03018

   PCMC 150 GRIT ABRASIVE STWHEEL 133949-016 / D-34743

  NSK BALL BEARING 6009VVCE SRIS

 ENTRELEC 120V 10A .5-50 SEC SOLID STATE CURRENT SENSOR ECS40BC

   NIAGARA 1/2" SHANK 1/4 RADIUS CORNER ROD ENDMILL 14260

LOT OF (5)   ALLEN-BRADLEY OVERLOAD RELAY HEATER ELEMENTS W25

  RELIANCE ELECTRIC SIGNAL BUFFER CONTROL BOARD 0-55325-81

   FANUC SERVO MODULE GRAPHIC CPU BOARD A20B-2900-0351

   EDWARDS STEADY-ON BLUE LED BEACON 48SLEDB-N5

   RBC HEIM SPHERICAL ROD END HFXL5G

   SIEMENS 400A 1000V SITOR FUSE LINK 3NE3-232-0B

  TRANSTECH POWER TRANSFER SYSTEMS SHOE TYPE CURRENT COLLECTOR C-79820

 HUBBELL 30A 600VAC CIRCUIT-LOCK DISCONNECT SWITCH HBLDS3

  HUBBELL 30A 600VAC CIRCUIT-LOCK DISCONNECT SWITCH HBLDS3

   OMRON PHOTOELECTRIC SWITCH FIBER IT E32-D61

1     OMRON PHOTOELECTRIC SWITCH FIBER IT E32-D61

   AMPROTEC 0-60 SEC SOLID STATE RELAY 731

   VALMET METSO NELES ANALOG OUTPUT MODULE A413135 AOU 4 MODEL-13

   TIMKEN TAPERED ROLLER BEARING JLM722948

NOS VICKERS 24VDC COIL SOLENOID VALVE PA5DG4S4LW-016C-H-60-S471 868988

 AGILENT 24V CAPILLARY INJECTION SOLENOID 19251-60560 HPG1544-60560

 PACKAGE MACHINERY CONTROL BOARD PC1005

   SEALMASTER 1-1/4" FLANGE MOT BEARING FB-20

 SCHNEIDER RED 2-POS RETURN

 GE GENERAL ELECTRIC 32/42A 240V 3POLE 120V COIL CONTACTOR CR4CG-11

   METSO VALMET FBC FIELDBUS CONTROLLER A413075

   FURNACE PARTS FLAME SENSOR JORG01F

LOT OF (3)    PARKER SS 1/2" TUBE TEE FITTINGS

   PMC 10-150 PSI PNEUMATIC PRESSURE TRANSMITTER PT-60-N-HA-S

   AURORA 1/2" BORE X 1/2"-12 RIGHT HAND ROD END BEARING MM-8KZ

   ROSEMOT 0-100 PSIA PRESSURE TRANSMITTER 1151APE22T0544B1L4

   PHD 5/8" STROKE X 3/4" BORE BACK TO BACK CYLINDER 01692660-01

   IFM EFECTOR 20-250V RETRO REFLECTIVE SENSOR OAR-FKOA-OA0104

 NUMATICS SOLENOID VALVE 554BA400MT14X61