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。

  DODGE S-2000 4-BOLT FLANGE HOUSING 070444

   COOPER BUSSMAN 2 POLE 15A FUSE HER BG3012SQ

LOT OF (3)    DANIEL WOODHEAD 20A 250V PLUGS 5466

   SICK 30V ULTRA SONIC SENSOR UM30-213111

   MARTIN TAPER BUSHING 2012-25MM

 BEC CONTROLS VACUUM SWITCH A902-1P-B1B4-82

 PARKER 120V SOLENOID COIL 71215SN2MN00N0C111P3 7C111P3

 GENERIC 4" CLAMP PIPE FITTING 13-MHHM-4

   SKF OIL SEAL 401100

1     SKF OIL SEAL 401100

   WOODHEAD 4-P 1.5M MICRO-CHANGE CORDSET 884030K05M015 1200660688

   SUPERIOR ELECTRIC 12.5UF 330V CAPACITOR KIT A201053-32

 MAC 24VDC SOLENOID VALVE 92A-AAB-000-DM-DDAP-1DM

   GE FANUC INPUT MODULE IC610MDL101B

   GE GENERAL ELECTRIC 115V COIL 1/2" STROKE SOLENOID CR9500A105A2A

 EATON 40A 240V 1-POLE CIRCUIT BREAKER WMZT1C40

   FESTO 150 PSI 50MM STROKE PNEUMATIC CYLINDER DSNU-12-50-P-A-S2

   PIMATI 100MM BORE CYLINDER REPAIR KIT P-100/25

   BENTLY NEVADA 8M EXTENSION CABLE 81305-080-00

   MAC 24V 1/8" PORTS 3-WAY SOLENOID VALVE 111B-611CCAA

 IN THE  BAILEY  MACKEY PRESSURE SWITCH 62650-017 2381 5A 250V 30-400PSI

   PARKER MIDWEST AIR PART AIR FILTER ELEMENT MW150-19-SA

   JOHN CRANE 2.750" TYPE 2 SEAL ASSEMBLY M49683 BF502B010118-8

LOT OF 10    SMC 6MM TUBE TOUCH BRANCH Y FITTINGS KQ2U06-00

   GORMAN-RUPP MECHANICAL SEAL 1.88 CTG 46513-154

   MILLER 120V SOLENOID COIL 341-B

   BOSCH AVENTICS 30V REED SENSOR R412019488

   DYNAMIC 0-60 PSI 1/4" NPT PANEL MOT PRESSURE GAUGE CF2P-004E

   ARROW 1/8" REGULATOR 1611

  ITE 20A 240V 3-POLE CIRCUIT BREAKER HACR320

 MAC 120V 150PSI 4-WAY 1/4" PORTS SOLENOID VALVE 6112B-PM-114JM

   MASTERDRIVE SHEAVE 3B94Q1

   SCHNEIDER 35A 600V CONTACTOR 24V COIL LC1-D09-BD / LC1D09BD

 SIEMENS 115VAC INPUT MODULE 305-20N TI305-20N

   WEIDMULLER 24VDC/12-300VDC 1A SOLID STATE RELAY 8937830000

   PEPPERLFUCHS 10-30V DC INDUCTIVE SENSOR NBN25-30GM50-E0 88244

  REN SPRAG CLUTCH 648110 / .75LH

   AKRON ELECTRIC 6 TERMINAL EXPLOSION PROOF ENCLOUSURE 2441-0022

  GE FANUC 10-SLOT BASE EXPANSION MODULE IC694CHS392A

 HONEYWELL SKINNER 100-PSI 120V 1/4" NPT SOLENOID VALVE V5R75020YT

   GORMAN-RUPP MECHANICAL SEAL KIT 13294A

   OHMITE 500 OHM 75W RESISTOR 1161

   PEPPERLFUCHS PROXIMITY SENSOR NJ15U4W Y85589

   SMC MAGNETIC REED SWITCH D-F7P

  ANTES 0.1"-24"WC RED SPRING PRESSURE SWITCH JD-2 RED 801111303

  OKUMA POWER SUPPLY CIRCUIT BOARD E4809-436-002-A

   THAYER FLOW CONTROL SCALE PANEL SERIES 5200 D-61661

   SEALMASTER 1-1/8" BORE BEARING INSERT 703085 2-12C

   CONSOLIDATED DEEP GROOVE BALL BEARING 61814

   HUB CITY SPLINE SHAFT 0255-00265

  STI MINISAFE CURTAIN CONTROL SYSTEM ENCLOSURE MS4400B-2

   SKF 3.5" SHAFT X 4.99" OD OIL SEAL 35083

 TRI-CLAMP 1.5" SANITARY BUTTERFLY VALVE BFVPC-1.5-316

   ITOH DENKI 24V DRIVER CARD MODULE CB-016P7

   MARTIN 0.25-0.688" BORE TIMING PULLEY 20XL037

RECONDITIONED GENERAL ELECTRIC SIZE 4 CONTACT KIT WITH SPRINGS 55-153678G2

   SIEMENS SIRIUS 48-460V SEMICONDUCTOR CONTACTOR 3RF2350-1AA04

   KOYO 1-3/8" CAM FOLLOWER CR-22 (REPLACES MCGILL CF-1-3/8)

LOT OF (4)   PARKER PIPE REDUCING ADAPTER 8-8 RA-SS-GR / 20ZA04

   ANDERSON LIFEGUARD WATER TIGHT CONTROLLER COVER 64417802

   EATON VICKERS HYDRAULIC PUMP PVB6-FRS-40-CM-12

   INA THRUST BALL BEARING ZARF2590-L-TV-A

   NATIONAL INSTRUMENTS PANEL MOT KIT 778616-01

  ATOS PROPORTIONAL CONTROL REDUCING VALVE CAPP AGRCZO-10-20

   ALEMITE 1/4" SPRAY NOZZLE 383588-5

 KING ENGINEERING FILTER CARTRIDGE ELEMENT 7333-10

   THE GENERAL 30MM X 62MM X 16MM BEARING 6206-ZZ-E

   MAIN FILTER HYDRAULIC FILTER CARTRIDGE 0578067 OF3-10-3RV-10

   REXNORD 2 BOLT FLANGE MOT BEARING KFC245-58

  HYDAC ELECTRONIC PRESSURE SWITCH 909597

   HOERBIGER 60V 20W PNEUMATIC CYLINDER REED SWITCH DZRS KY-3236

 LUMENITE 1-PROBE 27" LIQUID LEVEL PROBE 2DAFT3

  EATON CROUSE-HINDS 2W 3P 20A RECEPTACLE IT CPS-152R-M6

   MACROMATIC 120V 5A SPDT 0.2-5 SEC ON-DELAY RELAY SS-6262-04

 CUTLER-HAMMER SIZE 1 MOTOR STARTER AN16DN0

 MOELLER 1.6-2.5A MANUAL MOTOR STARTER PKZM0-2.5

   SQUARE D 115/120V DC CONTACTOR COIL A51017-056-51

LOT OF (4)   MCGUIRE BALL BEARINGS 6200-2RS

  MOELLER CIRCUIT BREAKER NZM-6-100

QTY 3    ALCOA FUJIKURA SMF-28 DUPLEX OPTICAL CABLES CS000343-0010

   GATES HI-POWER V-BELT C81 9004-2081

 OEM CONTROLS PCB CONTROL BOARD 1041.3-RBB

  REXNORD 10FT TABLETOP CHAIN 10145062 HPM880TAB-K3.25 SD60 T3P

 PHILIPS 110/230V POWER SUPPLY PE-1931/00B/U

   WARREN RUPP SANDPIPER DIAPHRAGM PLATE 612-198-150

 DIAGRAPH IV700 INKJET PRINTHEAD 5770202P

 TURCK 30V INDUCTIVE PROXIMITY SENSOR BI2-Q5,5-AP6X/S34

   MAC 24V 150 PSI SOLENOID VALVE PME-511DAAG

   MITSUBISI 24V COIL MAGNETIC CONTACTOR SD-N11

   AEG 24V COIL MINIATURE CONTACTOR SH0540E

 MICRO-SWITCH 10A 480V WOBBLE SPRING LEVER LIMIT SWITCH 208LS152

   ASCO 24VDC 40PSI 3/4" 11.6W SOLENOID VALVE 8210G095

LOT OF (6) NOS VENTURE 250 WATT METAL HALIDE LAMP BULBS MP250W/C/BU/UVS/PS/737

   GE .4-.63A MANUAL MOTOR STARTER  CONTACTOR GPS1BSAD MC1C310AT

LOT OF (8)   LEVITON 20A TWIST-LOCKING PLUGS L8-20

   BROWNING TIMING PULLEY 24LB100

   SKF 45MM X 85MM X 30MM DOUBLE ROW BALL BEARING 5209

   SCHMERSAL SAFETY INTERLOCK SWITCH AZ16-ZVRK-M20-2254

ODRIVE ELECTRIC BRAKE BM02

 HIGH PERFECTION TECH 100-240VAC LIGHTING POWER SUPPLY 20-3110 LP2046-BG-240

   GE GENERAL ELECTRIC SCR ASM KIT TRANSDUCER 36A353476AXG02

   BIMBA 50MM STROKE PNEUMATIC CYLINDER FM-0950

   AGASTAT 120V 2-60S ON DELAY TIMING RELAY STARX012XXADXA

  EATON 3P 150A CIRCUIT BREAKER EDB3150BP10

   MAC 1/8" 3-WAY SOLENOID VALVE 132B-1

   PIAB MINI VACUUM PUMP M10A6-BN

 NACHI MODULAR VALVE OG-G01-P1-21

 FOXBORO PRESSURE TRANSMITTER IDP10-TF3B01F-L1

LOT OF (4) NOS SWAGELOK CAJON 1/8" BRASS FEMALE TEES B-2-T

 BIMBA 3/4" BORE X 1/2" STROKE PNEUMATIC CYLINDER FO-040.5-3

   SKF BEARING NNU4920SP

FACTORY  EMERSON ROSEMOT PRESSURE TRANSMITTER 2088G2S22A1M5E5

 KEP SMART INTERFACE COMMICATION CABLE SMIC GE-90

   ASC 3 MFD 370V CAPACITOR X387S

   TUSBAKI 17 TOOTH 4.25" BORE SPROCKET 140BTL17H

   TURCK 30V INDUCTIVE PROXIMITY SWITCH BI4-M12E-AP6X-H1141 4608030

   WITTENSTEIN ALPHA GEAR REDUCER 29070976 SP-180S-MF2-16-0K1-2S

LOT OF (2)   THE GENERAL BEARINGS Z99R20

   MASONEILAN DRESSER ELECTRO-PNEUMATIC PRESSURE TRANSDUCER 8005A

   SEALMASTER INSERT BALL BEARING L-12

   CKD PRESSURE REGULATOR VALVE 2215-8C

  KEY INSTRUMENTS FLOW METER FR4A37SLVT

BAG OF (2)    HAWS EYEWASH HEAD DUST COVER 9095

   CONSOLIDATED 50MM X 72MM X 22MM BEARING NA-4910

   MAC 24V SOLENOID VALVE PME-591DAAD

   LEGRIS 1/4" 6MM TUBE PNEUMATIC FLOW CONTROL FITTING 7765-56-11

   NORGREN 150 PSI MAX 3/4" NPT AIRLINE LUBRICATOR L12-600-OPPA

 THOR TECHNOLOGIES MAIN CONTROL BOARD 1700-9999-00124

   KAYDON 2" ID X 2-1/2" OD THIN SECTION BALL BEARING 32828 KA020CPO

   ASCO V043 VALVE REBUILD KIT 172009

   BIMBA 1-1/4" BORE X 1/2" STROKE PNEUMATIC CYLINDER 120.5-P

  IMEASURE UM LINEAR TRANSDUCER ENCODER HX-EP-50-H1