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。

   MARTIN HI CAP SHEAVE PULLEY 6-5V-1180-E

   DODGE TIGEAR 1.01HP 1750RPM GEAR REDUCER SR96043L1

 ABB 115VAC 24VDC 900VA 25A POWER SUPPLY ASSY 3BSE-003-390R1

   TB WOOD'S ULTRA-V SHEAVE 5V1036 5V10.3X6-E

  KEYENCE 30V LASER SENSOR LR-ZB240CB

  ALLEN-BRADLEY COMPACT I/O 8 CHNL CURRENT OUTPUT MODULE 1769-OF8C

   ALLEN-BRADLEY COMPACT I/O 8 CHNL CURRENT OUTPUT MODULE 1769-OF8C

   KEYENCE DIGITAL IMAGE CONTROLLER CV-2100P

 ALLEN-BRADLEY MICROLOGIX 1000 CONTROLLER 1761-L16BBB

 DODGE 20:1 TIGEAR2 GEAR REDUCER 20Q20R56

 PH 48/60VDC DC CONTACTOR COIL 975E634-8

   FESTO 50MM STROKE PNEUMATIC CYLINDER DSBG-100-50-PPVA-N3

  GENUINE SKF ANGULAR CONTACT BEARING 7413 BGBM

 DIAGRAPH IV700 INKJET PRINTHEAD 5770202P

   REXROTH DIRECTIONAL CONTROL VALVE 4WE10J33/CW110N9K4

  REXROTH SB356 MULTI-CHANNEL CONTROLLER SYSTEM  CHASSIS 0608830251

   LEESON 1HP 3450RPM 208-230/460V MOTOR C6T34FC6D 110112.00

   JOHN CRANE 3" TYPE-8B1 SEAL ASSEMBLY M126027

  FAG SINGLE ROW CYLINDRICAL ROLLER BEARING NJ1026M1 NU1026

   SKF ANGULAR CONTACT BALL BEARING 7414-BGM

   KRAUS  NAIMER 40/75/100HP ROTARY SWITCH K251-A292

 ABB DRIVE ACH401B00522 ACH401-B00522

 KB ELECTRONICS 10 HP 3-PHASE AC INVERTER DRIVE KBN2-2310-1

FACTORY REFURBBED EXOR TOUCH SCREEN INTERFACE PANEL M-10V M10V

   DANFOSS ADJUSTABLE FREQUENCY DRIVE VLT5005 175Z0025

  INA NEEDLE ROLLER BEARING NA4834-XL

  INA NEEDLE ROLLER BEARING NA4834

FACTORY  ALLEN-BRADLEY SER. A SNUBBER RESISTOR FRAME E 1336-R1-SP2A

   GENERAL ELECTRIC GE FUJI COMMICATION MODULE OPC-G95-PF

  GE GENERAL ELECTRIC POTENTIAL TRANSFORMER 761X20G4 1.2KV 4:1 JVP-1

 CROUSE-HINDS 60A 4-P INTERLOCKING PLUG/RECEPTACLE ENCLOSURE WSR-6352

 DAMAN 316SS VALVE BLOCK W/ PARKER BLOCK COVER  SOLENOID VALVE D1VW020BNJW

 ALLEN-BRADLEY 7.5KW/10HP POWERFLEX 525 AC DRIVE 25B-D017N104

1   ALLEN-BRADLEY 7.5KW/10HP POWERFLEX 525 AC DRIVE 25B-D017N104

   VICKERS HYDRAULIC CONTROL VALVE 02-119614-PA5DG4S4LW-012N-B60

  ISCO ULTRASONIC FLOW METER 4210

 EATON 200A 3-POLE CIRCUIT BREAKER FD3200

1   EATON 200A 3-POLE CIRCUIT BREAKER FD3200

   MILLER 5" BORE 8" STROKE CYLINDER J86B

 SIEMENS MULTI-FCTION ELECTRONIC METER Q4N-72 110705430

   MARTIN QD SHEAVE 3-5V-1250-E

   PARKER PNEUMATIC 5" BORE 3" STROKE CYLINDER 05.00-BB2AU19A-4.000

   BIMBA PNEUMATIC CYLINDER DWD-1253-2

   GS DEZURIK GENERAL SIGNAL COMPAK ACTUATOR M148-DLS

  ROSEMOT PRESSURE TRANSMITTER 1151GP7E22B1L4

 ALLEN-BRADLEY AC DRIVE 1336S-BRF20-AN-EN4-HA1-L4

  GENUINE   SKF BALL BEARING 3315 E/C3

   KING AIR KAR OVERLOAD PROTECTOR LS-508L

   PACIFIC SCIENTIFIC SERVO MOTOR PMB33F-20114-00

  EMPIRE MAGNETICS MOTOR STEPPER YA34BJK-2R

   BODINE 230V 1/4HP 3PH 1.3A GEARMOTOR 42R5BFPP-5N

 ALLEN-BRADLEY SER.D 7.5 HP AC DRIVE 1336S-B007-AN-EN

   SKF 2-BOLT PILLOW BLOCK BEARING SAF-314

   PARKER PNEUMATIC CYLINDER 03.25J3MAU13M10.000

 CAROTRON POSITION CARD D10541-000

  YASKAWA CONTROL BOARD YPHT31522-3A

 SENSIDYNE MODEL 9000 2-CHANNEL DIGITAL CONTROLLER 820-0101-01

   ABB 6" BORE 8" STROKE 1-3/8" ROD DIA. PNEUMATIC CYLINDER

   METTLER-TOLEDO 2301 pH LEVEL TRANSMITTER 312313000 W/INT. PA 115V

  3M A80F 120AF AGII /2 SPARE PARTS KIT 3M 78-8113-6925-1

  BOSCH REXROTH 3-1/4"X3" HYDRAULIC CYLINDER C-MF5-HH-C

  ALLEN-BRADLEY SER. B PANELVIEW PLUS 1000 MODULE 2711P-RDT10C

   ALLEN-BRADLEY SER. B PANELVIEW PLUS 1000 MODULE 2711P-RDT10C

 CUTLER-HAMMER 100A 3-POLE CIRCUIT BREAKER HMCP100R3CA02

   FANUC RELAY BOARD A04B-0216-C209

 ENERPAC 350BAR 5000PSI HYDRAULIC CYLINDER BD70502-0-3119-B

   BODINE 90/130V 3/16HP 3/8HP MOTOR 42A5BEPM-FX2

1     BODINE 90/130V 3/16HP 3/8HP MOTOR 42A5BEPM-FX2

   WARNER ELECTRIC CLUTCH BRAKE MODULE EM-50-20 5370-169-203

  EATON AIRFLEX 145095 CLUTCH BRAKE 6CB200

   DESTACO PARALLEL GRIPPER 2 JAW PRECISION GC-105

   DODGE SPHERICAL ROLLER BEARING BRG22220K.C3

NOS ASHCROFT 600 PSI 1259 PROSESS PRESSURE GAUGE 45ALD2P1PP04H600#XNNOC

 SQUARE D MAG-GARD 150A 3-POLE CIRCUIT BREAKER KAL3615026M

NOS PARKER MANIF BASE L6553910249 W/ (2) PARKER SOLENOID VALVES K175903549

   STERLING ELECTRIC 1750 RPM 50:1 RATIO GEAR 2262BR050002

   MARTIN 20 TOOTH 2" BORE SPROCKET 10020

   ALLEGION EXIT PUSH DOOR HANDLE 9875E0-F US32D 4 5757500 PBT

  FALK 1025GL SLEEVE 0729505

   GENUINE SKF 4 POINT CONTACT BALL BEARING QJ-316-N2MA

   INTERMEC 2100 WIRELESS IVERSAL ACCESS POINT 2100D511491000

   HANNA 1.5" BORE 6" STROKE PNEUMATIC CYLINDER T752CC

  NAMCO SNAP-LOCK LIMIT SWITCH EA760-10000 EA-760-10000

   ORIENTAL MOTOR WATER TIGHT MOTOR FPW560S-9

   TOLOMATIC COMPLETE CYLINDER W/ CABLE CC15-SK33-HI

  CHROMALOX 3000W 480V HEATING ELEMENT ARMTO-303T1 / 500504553

   ALLEN-BRADLEY 460V 5-HP AC DRIVE 1336S-BRF50-AA-EN-L6

   ANDERSON DANAHER CIRCUIT BOARD 04614742 04614702

NIB ATHENA 0-2460F 115/230VAC TEMPERATURE CONTROLLER 19-KF-S-0-B-B-A-00-0-00

  ASCO TRI-POINT PRESSURE SWITCH SA30D T-529213

 ENDRESS  HAUSER LIQUISYS-M CONTROLLER CPM223-IS1405

 ENDRESS  HAUSER LIQUISYS-M CONTROLLER CUM223-TU0626

 FANUC SERVO AMPLIFIER BOARD A20B-0009-0320/19E

   BENTLY NEVADA 3300 XL 5/8MM PROXIMITY SENSOR 330180-51-05

   BROWNING STEEL PLAIN BORE SPUR GEAR NSS640

   SKF CYLINDRICAL ROLLER BEARING NU-320-ECJ

INCOMPLETE NEXEN REPAIR KIT 913600

  ASCO 110/120V SOLENOID VALVE JB8214280C

 ABB SWITCHGEAR SOLID STATE POWER SHIELD TRIP IT SS3 609902-T503

  AO SMITH E-PLUS 1.5HP AC MOTOR 200/230/460V 1745RPM E121 7-349697-02

   CONBRACO 1-1/2" PRESSURE TYPE VACUUM BREAKER VALVE 40-507-02

   INGERSOLL RAND VACUUM PUMP DISCHARGE VALVE 81C4-B

   RESEARCH CONTROL BRONZE 1.5" 6-3CSIG VALVE 9105GCNBZSV3B24P36

   KUMERA SPEED REDUCER GEAR CTK-1063 E12 1MM/N1-6,5

   IN BAG ALLEN-BRADLEY BUSS INDICATOR CIRCUIT BOARD 2364-SPP01A

 ABB SWITCHGEAR SOLID STATE POWER SHIELD TRIP IT SS4 609905-T501-N

 NORGREN 2-STATION MANIF VS180200002 W/ (2) VALVES VS18S511DF2113A

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

 ALLEN-BRADLEY POWERFLEX 70 2HP AC DRIVE 20AD3P4A2NYNNNNN

  ALLEN-BRADLEY POWERFLEX 70 2HP AC DRIVE 20AC3P5A0AYNANC0

  ANDERSON DIFFERENTIAL PRESSURE INDICATOR JD222-B02-A50

 LEICA GEOSYSTEMS DATA COLLECTOR JETTB45EKR2-512CF-400-HATCH-CJ-STY-BK

  SIEMENS MOORE PROCESS CONTROL BOARD 352EA21DNF

 SIEMENS MOORE PROCESS CONTROL BOARD 352EA21CNF

  CUTLER-HAMMER IPONI COMMICATION MODULE 8793C36G01

   ABB UV-TRIP 110-127VAC/DC CIRCUIT BREAKER ACCESSORY A053688

   HONEYWELL 6-POINT REED RELAY OUTPUT MODULE 621-0007RC

  MAGPOWR LOAD CELL TENSION SENSOR TS25SWMS2

 OF (2)    BARDEN PRECISION BALL BEARINGS 110HCDUL

NOS GENERAL ELECTRIC SPEEDTRONICS VIBRATION DETECCTOR MODULE IC3600SVDC1F1C

   K-TRON PC BOARD REV.B 9184-601970

   ASCO SOLENOID VALVE 8316G064N

   ADVANTAGE PACKAGING OPERATION BOARD PC-1069A

   DODGE TIGEAR 2 10:1 GEAR REDUCER E17Q10L56

 OF (4)    PFP FILTER ELEMENTS PFP56078AF PFP-56078AF

 YASKAWA AC SERVO MOTOR SGM-02U3B4M

   MARTIN 23 TOOTH 3-3/4" BORE SPROCKET 120E23H

 BURTON ANYSPEED 5HP VARIABLE FREQUENCY INVERTER LVL05

   SKF BEARING CUP MECHANICAL SEAL SKF 93125

ODRIVE 1700RPM .75KW 277/480V MOTOR SA57-DTS0N4

  BANNER MINI-ARRAY LIGHT CURTAIN SET BMRL2416A BMEL2416A

   MONITOR NEMA 4 ENCLOSURE TYPE 4 LEVEL SENSOR 11-8412-212 MK-2E