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。

以下链接皆有货

G057 JOINT KIT IMO PUMP FERRIER PUMPS

150LF-12A END PLATE INGERSOLL RAND

OMRON AE032 LN321E587H01-2 PCB CARD 100V DC

920-0001B JABSCO IMPELLER WITH SHAFT

7829-1 SPRING LATCH FOR SJL ELEVATOR VARCO BJ LOT OF 8

114668 LIGHTNIN THRUST RING

PT100 HEATING PROBE TEMPERATURE SENSOR

RLC101K1 REPAIR KIT ENERPAC

17-44124-00 CARRIER GASKET HEAD LOT OF 6

65520-95D01 FUEL TANK CAP ASSY FOR SUZUKI OUTBOARD

DK4R WEIDMULLER TERMINAL BLOCK 20030783 LOT OF 7

CONTACTOR IMO MC 18-S-10 7.5 KW, 110V 300/03/005 BRANDT VSM 300 SHALE SHAKER

PFA-91K-14 REPAIR KIT SWAGELOK

2000-0199 REPAIR KIT AIR CYLINDER

LAN TEST LT-100 TESTER OF NET FOR RJ45

9090608 ROCKER ARM SHAFT CAP EMD ELECTRO-MOTIVE

8028740 DOWEL PIN EMD ELECTRO-MOTIVE

2710697-01 LEECHEK CKRA3756205A   /

9570631 FRAME TO CRANKCASE OUTER GASKET INSIDE ELECTRO-MOTIVE EMD

51458 INGERSOL RAND O-RING SEALING DISC BRAKE ASSY

ADALET SERIES XL PILOT LIGHT TYPE CL-I-II GRPS -CDEFG-TYPE4 YELLOW 218286/218186

39454566 RADIAL SHAFT SEALS 34888 CHICAGO RAWHIDE

2ND STG PISTON RING KIT – 98477.1086

SEAL KIT FOR VALVE DB20-2-3X100 (9P) NEI (ITEM 281) BOP CRANE

D5622-005 FAN ASSEMBLY FOR OIL MIST DETECTOR MAKE KIDDE

1141-62 STAINLESS STEEL QUICK COUPLING PARKER

610238 CONNECTOR PACKER DS OUTLET

041008-07-25-62 RETAINING RING CAMERON

XB4BP42 SCHNEIDER ELECTRIC PUSHBUTTON SWITCH

438815504 GASKET W655 GABLE TO DRUM ELECTROLUX

69012-002 GAI-TRONICS HANDSET SAFETY BARRIER

E1SF15-PLS BARKSDALE E1S-F15-PLS PRESSURE SWITCH

7502 3M HALF FACEPIECE REUSABLE RESPIRATOR 7502/37082

PK322HLL01 PARKER PISTON SEAL KIT

F8513501 WASHER KIT SHELL FRONT GASKET SPEED QUEEN ALLINCE

ZCKE21 LIMIT SWITCH TELEMECANIQUE

3EB-30-11231 KOMATSU FORKLIFT BRAKE CABLE PARKING BRAKE CABLE

FS6BNCU BELDEN SNAP-N-SEAL 5

RB122 ABB RELAY 24VDC

294692 HOBART 00-294692 RINSE PROBE ASSEMBLY

3RT1024-1AL20 SIEMENS 3-POLE AUXILIARY CONTACTOR

KP-937-30 BUNN-O-MATIC 27782.0000 THERMOSTAT WITH KNOB

CJX2-3201 AC CONTACTOR HIGH SENSITIVITY

0080-01-PT-1025 SPACER RING

TB-5P 2P, 10A-15A-20A LOAD CIRCUIT BREAKER TERASAKI (10A-15A-20A)

2N7522 KIT GASKET FITS CATERPILLAR

H3CR-A OMRON SOLID-STATE TIMER  OMRON P2CF11

H3CR-A OMRON SOLID-STATE TIMER

TDV-3 OMRON TWIN TIMER MODULE RELAY

CAPCOM 97F5705 CAPACITOR 50/60HZ 370VAC 102N101 LOT OF 6

AB013 A1 XC 05/08 PROXIMITY SENSOR

51215 HASKEL SEAL KIT

PALADIN BG40.17/312110 OPERATING HOURS METER COUNTER 12-48VDC

ECOLAB 9200-2060 REV.E  GEN DC SPEED CONTROL PWB 9200-2061 REV C

CCLX90 PARKER AUTOCLAVE ENGINEERS COLLAR 9/16 LOT OF 10

6425-05-0152 Relay SCR ASSY-25KW, MODEL 58858

233N-4T FUJITSU RELAY FRL230 60Hz-100/110V,50Hz-100V

50DFS250-SL CARRIER TEMPERATURE CONTROLLER

3 1/2" BAFFLE PLATE P/N. 191702

12502-101 GAI TRONICS RECEIVER REPLACEMENT KIT 20081125

5261851 DEFLECTOR SHIELD FOR FMC TRIPLEX PUMP

3P-0647 CATERPILLAR ORING SEAL 3P0647 4

8H-9180 CATERPILLAR SEAL 8H9180 LOT OF 12

8717-2338 O RING KOOMY LOT OF 9

7T-8275 SHAFT CATERPILLAR 7T8275 LOT OF 12

6V-3736 GASKET KIT TURBO INSTALLATION CATERPILLAR 6V3736

KFD2-STC3-EX1 PEPPERLFUCHS SMART TRANSMITTER POWER SUPPLY

8060000060 ANTUNES CONTROLSPCB BOARD

CCS 604P31 PRESSURE SWITCH

OL40U3PB ABB CAM SWITCH

INGERSOLL RAND CSTG: 26949-1 POPEYE HANDLE ASSEMBLY FOR AIR TUGGER

9G-8010 SWITCH CATERPILLAR 9G8010

7602-213276 SEAL PONY ROD, DOUBLE LIP, CONTINENTAL EMSCO 6325-LUP-1

3121487 PLUG BALL RETAINER 3 XHTL STYLE LOT OF 18

HH83ZB008 CARRIER CIRCUIT BREAKER LOT OF 9

2959188/3335750 KEPNER  FLOW CHECK VALVE CONNECTOR

52149000 OIL SEAL KIT MISSION CENTRIFUGAL PUMP FORUN

WORLD WATER SYSTEMS HSSP0516 HS SIDE PANEL ASSEMBLY

3N-1372 SEAL ASSEMBLY CATERPILLAR 3N1372 LOT OF 6

BUSH FOR MUD PUMP LUBE OIL SERVICE PUMP

10416-202 MICROPHCABLE 25" GAI-TRONICS CORPORATION

35322379 BLOWDOWN VALVE DOOSAN INGERSOLL RAND

ZBV-M3 SCHNEIDER ELECTRIC LIGHT BLOCK LED GREEN

ESU-16670 WALTER VALENITE INDEXABLE TOOL HER INSERT CARTRIDGE

AH3-0124 CUTTER HER OBARA KOREA

77297 ARO O'RING SERVICE KIT FOR ARO WASH PUMP 613-612

REXROTH P-49601-00018 PISTON SEAL R4330113864

314750 SOUND CARD STATAWARM ALARM MODEL 110

KTIP080R5SS10M KENNAMETAL BODY FOR INSERTABLE DRILL HEADS

AVH-1 TERASAKI COIL 120V

GDA3YT PETERS SOLENOID CONNECTOR 24V AC/DC

D-68775 KETSCH EPE HIGH PRESSURE HYDRAULIC OIL FILTER

RETAINER, TONG LINEMFG PART NO. 24529

26604 INGERSOLL RAND 71339949 VENT CAP ASSEMBLY AIR MOTOR

160900020 PISTON HI FORCE HYDRAULIC TOOLS  PCS

INGERSOLL RAND 71027387 RING SET

WABCO FLUID POWER DIVISION P57137 REPAIR KIT

1513-24 AIR RECHARGE VALVE PORTABLE SANITARY PUMPS

PMCCF HONEYWELL MICRO SWITCH MADE IN USA

SPC 40-16RF SCHUNK 471066 VERO-S SPC 40-16

DV-08-01 1/0 FLUTEC FLOW CONTROL CHECK VALVE

DV-10-01 1/0 FLUTEC FLOW CONTROL CHECK VALVE

CATERPILLAR HOSE A 9N3370

DRV-08-01 1/0 FLUTEC FLOW CONTROL CHECK VALVE

ME203 LIMIT SWITCH  /

RS232 REPEATER / EXTENDER

22170187 INGERSOLL RAND OIL SCAVENGE TUBE REPLACEMENT

M410243P ALLIANCE DRYER ASSY HANDLE  CAM

BI5-M18-AD4X INDUCTIVE SENSOR TURCK INDUSTRIAL AUTOMATION

3700041-015 SEWAGE PUMP FLAPPER ASSEMBLY

ABB ERDM425 TIME DILEY RELAY 120VAC

43004422 ASCO SOLENOID VALVE COIL 230 V AC

OHMITE RHS175E RHEOSTAT 175 OHM

AIRTAC 3V310-10-NC SOLENOID AIR VALVE

345-369 PROGRAMMABLE TIMER BASES 345-375

SQUARE D AD-7282 SHUNT TRIP

4430-0219 END PLATE UPPER ATLAS COPCO

SQUARE D 9999-D01 AUXILIARY CONTACT 9999-DO1

INGERSOLL RAND 71039333 COLLAR

QBS-0004 CLEAR XENON BEACON 110V AC

GRT50 APPLETON CONDUIT OUTLET 4WAY 1/2"

014-0006 GLASS SIGHT 1/2 INCH NPT LIR/DCC WATER CHILLER UNIT DANFOSS

51-03004 KOOMEY TRIPLEX PUMP STUFFING  GASKET LOT OF 6

GRT50 APPLETON CONDUIT OUTLET 3WAY 1/2"

A2V225 SEAL KIT A2V225HWEL

SYSTEM SENSOR A3008-00 REPLACEMENT RETARD KIT

STANLEY 16969 SEAL KIT FOR GR29 HYDRAULIC UNDERWATER GRINDER

3190702 MILLER FLUID POWER BOLTED BASE-LOK

23514970 FP DIESEL RING SET FP-23514970 (9239KX)

35147388 STEM VALVE PAC AIR COMPRESSOR

HUTHBROTHER WORM GEAR KIT COMPATIBLE WITH WHIRLPOOL 5QT6QT 9709231 REPLACEMENT