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。

 Allen Bradley 1492-FB3C-30-L 3-Pole Class CC Fuse Her (CL14DM S

Parker Legris 3182-08-00  of 10 8mm Push to Connect Elbow Fitting (CL35DM S

CKD SC3R-6N 1/8'' NPT Speed Controller (YE22DM S

Rub S93C41 Brass Ball Valve Lockable Handle 3/8'' NPT Female (BK16DM S

Bussmann / Fusetron FRN-R-40  Dual Element Time Delay 40A 250V (YE180)

Belknap RJE-18M 18mm Open Torque Wrench End

Belknap RJB-13M 13mm 12-Point Torque Wrench End

Woodhead Molex DN11A-M010 1 Meter DeviceNet 5-Pole M/F DeviceNet Cable (CBL13DM S

McGill CCF 1/2-SB Cam Follower Lubri-Disc (BL19DM S

Gates AX 44 / 9012-2044 Tri-Power Belt Cogged V-Belt (BE121)

SMC ZP100HN 4" Pneumatic Vacuum Pad Suction Cup (YE122)

MACK CORPORATION 73350DM SLO-PRO Pneumatic Cylinder 300PSI (CL101)

OMRON D2D-1000  Electromechanical Switch (YE132)

Fuji Electric CP31D 5A 1-Pole  Circuit Breaker (BL11DM S

Bussmann LPS-RK-40SP  Low-Peak Fuse (BL13DM S

DM SBussmann LPS-RK-40SP  Low-Peak Fuse (BL13DM S

Atlas Copco  4222 1247 12 Cable E-Stop 1.2 Meters (CL23DM S

Turck RK4T-6/S101 / U2357 M12 3-Wire Straight Single End Cable 6M (CBL151)

MACK CORPORATION S1020-2  LO-PRO Pneumatic Cylinder 300PSI (CL102)

Gates PowerGrip 450L050 Industrial Timing Belt 45'' x 1/2''

Clippard JFC-3A Metered Out Flow Control Valve 1/8" NPT (CL13DM S

Apex M3112 3/8'' Magnetic Socket 3/8'' Square Drive (RE14DM S

Bussmann NON-50  Dual Element Time Delay 50A 250V (YE180)

Timken Torrington CRSB-8 Cam Follower CF-1/2-N-SB (RE240)

IFM Efector EVC266  CONNECTION CABLE (BL11DM S

IFM Efector E10848 Moting Sleeve with end Stop (RE150)

Sloan EBV-144-A Solenoid Operator 3325462 Optima Plus Flushometers (CL121)

Allen Bradley 800F-N3W White LED Module 24V

Parker 6-6-CCTX-B Long Male Elbow 3/8 Male 3/8 NPT (BL111)

Cer Products Lot of (DM S CPC PMC4004 1/4" Panel Mot Coupling Insert (BL197)

Allen Bradley 60-2513 360 Degree Moting Bracket (BL302)

NTN R6LLU Bearings (BL19DM S

OKAYA RMTE-121224-FA Surge Suppressor .22uF-120Ohm 250V (GR102)

Bussmann / Eaton FWH-25A14Fa 25A 500V (YE181)

SMC AS2311F-02-06S  Speed Controller Valve (RE120)

itta 394-2GT Timing Belt (GR151)

T-Tron JJS-20  Current Limiting Fuse 20A 600V (YE17DM S

Siemens 3NA3 810 Fuse 25A (BK10DM S

Parker 30682-5-4B 3-Pack 1/4 JIC x 1/4'' Hose Brass Push-Lok for 1/4'' ID Hose

Kurt Hydraulics MIX45-04-03 1/4'' Hose ID Crimp x 3/16'' Inverted Flare 45°

TPC Wire  Cable 65502 5-Pole Male Panel Mot Receptacles (CL262)

INA Schaeffler RNAO16X28X12 Needle Roller Bearing (YE22DM S

Phoenix Contact UMK-SE 11,25-1 Terminal Block 5535392 REV 0 (CL121)

Phoenix Contact UMK-SE 11,25-1 Terminal Block w/ LM324N Quad Op-Amp (CL122)

Bimba 020.5 Pneumatic Cylinder 9/16" Bore, 1/2" Stroke

Brennan Industries 2403-16-16 Steel 1" JIC Male x Male ion Fitting

Belknap RJB-12M 12mm 12 Point  Torque Wrench Insert

Kurt Hydraulics FJX90-10-10 5/8'' Hose ID Crimp x 5/8'' JIC Female Swivel 90°

Yale 504240211 Spindle Nut (CL15DM S

Martin 35B25 Bore to Size Sprocket 1/2" Bore 25 Teeth (YE170)

DM SMartin 35B25 Bore to Size Sprocket 1/2" Bore 25 Teeth (YE170)

Fuji Electric TK-1SN/UL Thermal Overload Relay 0.8-1.2A / 600V (CL250)

Tsubaki H35B12  Bore to Size Sprocket 1/2" Bore 12 Teeth (CL277)

Tsubaki H35B15  Bore to Size Sprocket 1/2" Bore 15 Teeth (CL27DM S

Conta-Clip RK2,5 Lot of 10 Feed Through Terminal Blocks (YE27DM S

Koyo 60062RSC3-GXM  Bearing 55x13mm, 30mm ID (RE25DM S

Allen Bradley Local Terminal 1771-CXT 1771CXT Ser. A  (YE10DM S

IGUS ChainFlex CFX-42-1 Strain Relief Clamp 40-42mm (CL192)

Turck PKG 3Z-6 PicoSensor Cable / Cordset U0066-99 (CBL10DM S

Harting Han 10 E-BU-S  Female Connector (YE13DM S

Turck 163K431H02 Sensor Corset U2-14866 (RE100)

SKF Oil Seal 100mm x 125mm x 12mm 39136 (BK120)

Allen Bradley 1492-WD4DF  Lot of 6 Diode Block (RE13DM S

Pepperl Fuchs V3-GM-5M-PVC  CORDSET (CBL112)

SMC Y400 Valve Moting Spacer Coupling (GR130)

Balluff BAM00FZ  Moting Clamp (GR13DM S

Gates Tri-Power BX77  V-Belt 5/8" Top Width X 80" (BE10DM S

DM SGates Tri-Power BX77  V-Belt 5/8" Top Width X 80" (BE10DM S

Siemens 3TX7110-5BG13C Relay (YE13DM S

Littelfuse FLSR 3-2/10  Fuse (GR100)

Lumberg RKMV4-225/5 M  MED CABLE FEMALE STRAIGHT (CBL111)

Gates 8MGT-248-21 SPL  Poly Chain Belt 8M-248-21 (BE101)

Telemecanique Square D GV2-G445 Buss Bar 690V 63A (CL16DM S

MURR Elektronik 7000-40021-0140100  M12 Female 90 Degree (BL11DM S

Turck RKG 4.4T-2-WSE 4.4T/S600 ID#: U5317-89 Cordset (CBL101)

Parker 2202-8-8 Brass 1/2 MNPT x FNPT Elbow Fitting (BL10DM S

Browing 210XL037 Gear belt Timing Belt (CL192)

Cefcon CRS-R-50 Lot of (DM SDual Element Fuse (CL130)

MAC Valves 92B-000-BJA Manif Block (BL15DM S

Ferraz Shawmut TR35R  35A 250V (BL250)

Allen Bradley 1492-GH025 2.5AMP Circuit Breaker (YE15DM S

Allen Bradley 1492-50Y 1-Pole Power Terminal Block 600V (CL25DM S

Carling 50F-6918 Rocker Switch 62116919-0-0-N-XN1 (BL117)

SMC KQ2ZT08-03S 6-Way Triple Branch Fitting 3/8" X 8mm (RE22DM S

SMC NL-1-1 Lot of 10  Solenoid Valve Gasket (GR160)

Bussmann FNM-6/10, 6/10 Amp (6/10A)  250V (BL150)

Allen Bradley 800E-AHA1 PANEL  HOLE ADAPTER (BL15DM S

Testron Corp. T-25707-3 2-Way Blower Motor Test Connector (BK10DM S

Alkon Solenoid Coil 21874-06 115 VAC 50/60 Hz (GR1DM S

Daito MP032 Lot of (DM SFuses Fanuc 0.32A (CL19DM S

Parker 1UT43-6-6 Crimp Hydraulic Hole Fitting 3/8 x 3/8 (CL372)

INA TWC1423-HLA  Flat Thrust Washer (CL11DM S

Murr 7000-08381-0000000 MOSA M8, Female 4-Pole Field Connector (BL22DM S

GE 97F9607 Capacitor 370VAC 25µF 50/60Hz (CL13DM S

Murr 7000-08341-0000000 M8, MOSA 4-Pole Field Connector (RE137)

TB Woods L070X3/8 L-Jaw Coupling Hub 3/8'' Finished Bore (GR14DM S

SMC D-F7BV 2-Wire Pneumatic Auto Switch Relay (BL18DM S

Yale Hyster 505974576 Accelerator Return Spring(CL24DM S

Turck RSM RKM 430-1M Cordset Cable U-01905 (CBL10DM S

Wiha Softgrip Combination Wrench 15/16" (GR18DM S

Mencom CKA-03I Metal Panel Base w/ Lever (YE25DM S

SMC AJR1020-M5-06-1 Miniature Regulator (CL26DM S

Budgit 10422705 Oil Filler Assembly 1/4" NPT (CL180)

INA TWA1423  Needle Roller Thrust Washer (CL15DM S

Banner BRT-40X20AM / 67494 Retro Reflective Target Reflector (BL26DM S

Victor GPM-0 2-Piece MAPP Gas Cutting Torch Tip 0-GPM

Apex NC5112 1/2'' Drive, 3/8'' 6-Point No Mar Impact Socket

Gates 2230  Truflex V-Belt 1/2" x 23" 12.5/13mm x 585mm 4L230 (BE107)

Allen Bradley 140-MN-0250 Manual Motor Starter 600V 2.5A (CL15DM S

 Allen Bradley 140-MN-0250 Manual Motor Starter 600V 2.5A (CL15DM S

RS PRO 722751DM SRed Panel Mot Indicator, 220VAC, 14mm Moting Hole (YE161)

ABB 1SFA611214R3104  Selector Switch (GR137)

Parker PK2002A001 2'' Ban Piston Seal Kit

DM SParker PK2002A001 2'' Ban Piston Seal Kit

Armstrong 53-082 16mm x 17mm Double Open Ended Wrench Chrome

Fuji Electric AH22 ZRH  Red Command Switch (CL140)

Automation Direct CD12M-0B-050-C1 M12 Connection Cable (YE16DM S

OMRON MY4N 24 VDC  Relay (GR13DM S

Fuji Electric AH22 ZWH3 / 0084  Clear Command Switch (CL137)

Fuji Electric AH22 ZGH3 / 0084  Green Command Switch (CL13DM S

Bussmann Buss JTN60030  Fuse Hers 0-30A 600VAC (BL20DM S

KBC 6009ZC3G8DM SSingle Row Precision Bearing (YE20DM S

Igus 301 Vertical Cable Separator Package of 8 (BL19DM S

TC 1/4" Lot of (DM SNPT 150 ion 304 Stainless Steel (CL18DM S

Square D HPAFYQ Handle Lock  (RE197)

Buss Bussmann NON-100  Fuse 250V 100A (CL1DM S

Martin 1610 1-5/8 Tapered Bushing (RE132)

Fag 6304.2ZR.T.C3.L 1K Metal  Bearing 069312 (BL20DM S

Festo MVH-3-1.2 24VDC. Solenoid Coil (GR20DM S

Megadyne RPP G 544-GLD8-12 / 544-8M-12 Power Transmission Belt (BE112)

Clippard RE-3285 Spherical Rod End 1/2-20 Female (YE21DM S

Dynabrade 1-3/8''-12 Carbon Steel Hex Jam Nut