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

94-36-220 SWACO SLEEVE WEAR  PN:96-11-111E

GEMS 30290 LS-2050 SERIES LEVEL SWITCH 56843

27616-60 HASKEL FLUID SECTION SEAL KIT

PWB964710 SOUTHERN AVIONICS COMPANY SRP09900 SLP09904

532T1-2M-150 POPOFF VALVES MADE IN USA 20378605

8F-B8LJ2-SSP BALL VALVE 6000 PSI B SERIES 2WAY

N37441091 BY PARKER PILOT AIR CONTROL VALVE

OMNIPURE 69003 REV. 8 PCB BOARD CARD

OMNIPURE 69003 REV. 11 PCB BOARD CARD

630112 SUB DRILL MS-V3A OILFIELD EQUIPMENTS

BX155 RING GASKET SS316 MADE IN USA LOT OF 6

B11G0000 PCB CARD TECH POWER CONTROLS NATIONAL OILWELL VARCO NOV

NAIO-03F ABB ANALOGUE I/O EXTENSION MODULE 64669281

800T-U29 ALLEN BRADLEY POTENTIOMETER 800TU29

 800T-U29 ALLEN BRADLEY POTENTIOMETER 800TU29

SPBAA240 GENERAL ELECTRIC BELL ALARM CIRCUIT BREAKER

802X-B7 LIMIT SWITCH ALLEN BRADLEY

1933091000 CYLINDERS  ACTUATORS AVENTICS REXROTH

8347103 PISTON RING OIL CANTROL ELECTRO MOTIVE EMD

Z9108 LOW PRESSURE PISTON / RING KIT LP 40/70

35147081 GEAR PAC AIR COMP

PT.13727D FEDERAL SIGNAL ECHO-RMLC PCB 4658-FS JERON ESI

6397-0293-01 STRAINER. CONTINENTAL EMSCO, FA-1600 MUD PUMP

NOV 10036643-001 36C AIR CLUTCH DIAPHRAGM 13” OD 622845 R-112645/R-109184 X-9626

73614 LOCK-OUT ARM ASSEMBLY FOR SSW40 SPINNING WRENCH NOV

10292046-001 VALVE STEM 20379607 NOV 3-1/16" 10000PSI

35593490 SHAFT FRONT SEAL DOOSAN USE WITH INGERSOLL RAND AIR COMPRESSORS

E390-45 MARTIN DECKER LOAD CELL DIAPHRAGM MD TOTCO

488031 ROLLER GUIDE CASING TONG WEATHERFORD 10680782

FURUNO FM-8500 MARINE VHF RADIO TELEPH

TD101/A MOBREY 18 BAR TEST DEVICE TD101/A P/T686

D10-365 SHAFT GEAR INTERMEDIATE INGERSOLL RAND D10365 LOT OF 6

R18-100R SERVICE KIT NORGREN

RKI GX-2001 GAS DETECTOR 4-GAS, LEL/O2/H2S/CO,INPUT 100-240 VAC CHARGER BC-2001

19346A000K CERAMIC CYLINDER MYERS

ELECTRONIC DEVICES ED710 GAS DETECTION PCB MODULE

CA1941314 VALVE CLOVER TOOLS DISCHARGE HP, EK SERIES CTU-20P-D2 UNIT LOT OF 6

K6U-555 THROTTLE CONTROL ARM INGERSOLL RAND KU-555A ( REPAINT)

10297120-001 SPRING LOAD RESET RELIEF VALVE

51462 INGERSOLL RAND 0397482SEAL

JRC NBD-620A DC POWER UNIT

1800100 SHAFFER SEAL SUB 1/4"X3/4"X1" VARCO SHAFFER 0

710775 CONNECTOR PLUG SOLENOID VICKERS (DANFOSS) LOT OF 11

CYLINDER DIVISION RG2AHL0131 ROD GLAND SEAL KIT VARCO TDS-4H

KU-337 INGERSOLL RAND PISTON RING KU-338

12SHSN4D PRESSURE SWITCH 12 SERIES MADE IN USA

122880-232 FENWAL QUINCY TEMPERATURE SWITCH SENSOR

878307 WATTS 3 WATER PRESSURE REGULATOR VALVE REPAIR KIT FOR N223F

TERASAKI ERY-211 PCB CARD  98032

NARDA 3002-10 COAXIAL DIRECTIONAL COUPLER MADE IN USA

SKF 564155 OIL SEAL 68X90X10 LOT OF 7

SS-CVMF9-SS CHECK VALVE SPIR STAR 20000PSI

10079465 KMT TEE ASSEMBLY 66000PSI

BSP-3308-316-EP VERSA VALVE 3WAY MADE IN USA

788-538 WAGO RELAY MODULE LOT OF 6

615347-02 RING GASKIT SUBX3A3 AX-6/2, 3 1/16 INCH MFG CAMERON

HERNIS SCAN SYSTEMS RX286 HS035B PCB TERMINATION BOARD

MIKRO SWITCH 2XMIKRO/A110/M20X1,5 LIMIT SWITCH

6966-6700 RUBBER ELEMENT FOR BULK SILOS FOR AIR LINE LOT OF 14

SONCEBOZ CHART RECODER WATCH 0820 R001

35121177 CHECK VALVE FOR INGERSOLL RAND AIR COMPRESSOR

TU12874 CIS SOLID STATE REVERSING TIMER BOARD

902VB1-PG HONEYWELL LIMIT SWITCHES ENCLOSED BASIC SWITCH

00-344635-00002 HOBART THERMOSTAT S-12-36 ASSY IN MEXICO

PPFK3A13SU CARTRIDGE FILTER ELEMENT 243806 P3A13SX

RG2HLTS131 KIT REPAIR ROD GLAND SEAL PARKER FLUID POWER

CB322HL005 2H, 3L, VH SERIES CYLINDER BODY KIT 3 1/4 INCH PARKER

PA-0010 GASKET NATIONAL OILWELL VARCO 3 1/16" 10000 PSI GATE VALVE

KOOMY BEAR T330 CONNECTING ROD ASSEMBLY 3002-2102

8 DEGREE CHART PAPER FOR DRIFT RECORDER MD TOTCO 191410   (100)

EATON BUSSMANN SERIES FNQ-R-10 FUSE LOT OF 6

031116 NOV POLYPAK SEAL LOT OF 9

PARKER 1457810000 RIGHT HYRDAULIC ACCUMULATOR CHARGING

28690 PILOT VALVE TOOL INGERSOLL RAND

M35100201 GEAR RAM  /

CAMERON 3 1/16" 15000 PSI GATE VALVE STEAM PACKING (140232-15-01-03) LOT OF 8

DU-710 BRAKE SPRING INGERSOLL RAND

PREMIUM ANNULAR CUTTER 45 MM CUTTING VACO FRANCE HARD CUT KBL 045

8135-035 SONARDYNE PCB

30031133 PLUNGER PACKING FOR BOP TRIPLEX PUMP KOOMY 3003-1133 LOT OF 7

DL1EFYS BROOK CROMPTON STATOR SERIES 2000

46105-2 SAUER DANFOSS REPAIR KIT LOT OF 7

1141-63 PARKER COUPLER 1141-62 QUICK DISCONNECT 1/4"

MR-42-7 VANE SET INGERSOLL RAND ""  PACK EACH PACK 7 PCS

601409030 GREASE SEAL 394314 MISSION FLUID LOT OF 6

725R382 SONCEBOZ 31 DAY REV CCW 13WINDING TURNS CW

636077 Z-SWIVEL  PRESSURE 10,000 PSI INGERSOLL RAND

CTX6660 PARKER AUTOCLAVE TEE 20000PSI

NORRIS 5" BUTTERFLY VALVE R1011-13AA-1J

325-60080-25 EMERSON THERMAL EXPANSION VALVE

K6U-509 CONNECTING ROD FOR K6U OR K6UA RAM WINCH

FR1000 ESAB FLASHBACK ARRESTOR (FUEL GAS) RESETTABLE

PRS-1/4-6-B FESTO MANIF BLOCK

7602-213276 SEAL PONY ROD, DOUBLE LIP, CONTINENTAL EMSCO LOT OF 6

HYDRATIGHT SWEENEY 2864 SERIES MANUAL CRANK OVER TOOL

1510-1100 SHUT VALVE 1/2" EHL

31948/M2 NOV MISSION CASING FOR 3" POP VALVE

51242N GRAYLOC SEAL RING SIZE 52

7602-1070-04 CONTINENTAL EMSCO HOUSING FILTER 3/4" NPT FEMALE

PMCCF 0217 HONEYWELL MICRO SWITCH MADE IN USA 5

71126874 FRICTION PLATE INGERSOLL RAND

OIL COOLER PIPE 6L8938 - CATERPILLAR

SL-22H SAFETY VALVE VENN CO. SIZE-20

TERASAKI EMI-301 OUTPUT INTERFACE MODULE K/787/11-001A

20MAM9M12 PARKER AUTOCLAVE 20000PSI MALE ADAPTER

6Y738 GREASE FEEDER POLYCARBON W W GRAINGER

1710-5197 SEAL KIT FOR 1 1/2" SHUTTLE VALVE KOOMY 5 KIT

ARU-24D TERASAKI CONTROL DEVICE 450V AC

KU-555A THROTTLE CONTROL ARM INGERSOLL RAND

HU-565 LEVER INGERSOLL RAND

D10-507 INGERSOLL RAND GASKET 4

HU-556 INGERSOLL RAND THROTTLE LEVER  /

406658B NXT AIR MOTOR REPAIR KIT GENUINE GRACO PARTS

PD5-H505A CYLINDER HEAD FOR RAM WINCH

FILTER PAPER WHATMAN 90MM/QUANTITATIVE FILTER PAPER 90MM

22170187 INGERSOLL RAND OIL SCAVENGE TUBE ASSEMBLY

0155-4779 CUMMINS BELLOW PIPE-EXHAUST 4071458 (38X58X38 CM)

129.030.020 KREMLIN AIR VALVE ASSY SX GUN 129-030-020 INLINE VALVE NIB

ALFA LAVAL 176216323 SHAFT SEAL FOR FEED PUMP TYPE ACP032L 192692

35592534 DIAPHRAGM DOOSAN INGERSOLL RAND

22031 DIAPHRGM NON-RETURNABLE PART INGERSOLL RAND

INGERSOLL RAND 22033 SEPARATOR PLATE LOT OF 6

GA114-75 TONG PULL LINE GAUGE MD TOTCO

01151-0372-0002 FISHER ROSEMOUNT PROCESS CONTROL BOARD PRESSURE CONTROL

GA112120 PRESSURE GAUGE 12000 PSI MD TOTCO

0509-21 ROSS HILL CANTROLS GROUND FAULT PCB CARD

35012435 ROCKSIDE SLEEVE(2.500) 100003087K

20023553 NOV SHAFFER 20023552 POPPET ASSY

SEATEL 116321-2 SHIELDED POLANG AUX RELAY 116024-3,116281

DTL ENGINEERING SH0118-1 3/8" SHUTTLE VALVE

487181881 ELECTROLUX CONTROL TRANSFORMER

UT350 YOKOGAWA TEMPERATURE CONTROLLER