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

81788 DIE FOR PIPE HANDLER NOV VARCO PH-85

94404-30140 TILT CYLINDER SEAL KIT 9440430140 CATERPILLAR

190142 MILLER FIELD SENSOR REPLACEMENT KIT 267389

SKB-1.25 SCHROEDER MAGNETIC SUCTION SEPARATOR

40581 SEAL KIT FOR 40581 PILOT PUMP MODEL SEATRAX S10832, S/N:4459  4460

SPC ELECTRONICS EAM-C-360A C-BAND LNA LF LOW NOISE AMPLIFIER

MAV/S MANIFS SUN HYDRAULICS MAV/S IEZ0-K1

INGERSOLL RAND DISC 12012 LOT OF 6

TB4172SK REPAIR KIT SEATRAX CRANE

487153166 ELECTROLUX LAUNDRY HEATING ELEMENT

KU3375 PISTON RING INGERSOLL RAND KU-337

31404 SPRING VARCO LATCH LOCK SLX ELEVATOR

AP130241-102 FTS GLIDE CABLE

08133 TRIGGER FOR STANLEY IW16 HYDRAULIC IMPACT WRENCH 8133

S4381 JET SPRAY DISPENSER PUSH HANDLE ASSEMBLY

WVFX DANFOSS PRESSURE OPERATED WATER VALVE

3LD2504-0TK53 SIEMENS CONTROL SWITCHES 3LD25

LEGRAND 44262 ELECTRIC TRANSFORMER RS 535-7799 50/60HZ 53VA/86VA UL63VA

JM-70009-TSS PARKER SEAL

4" BUSHING C26AA MAKE BRANDET LOT OF 16

154F2672 DG-RF 288 KIT POCHETTE DE JOINTS 154F2672DGRF288 REGGIANA RIDUTTORI

PC05500000 POWER COUPLER QL 55W TWIST BASE

07-3363-1820 PUSH BUTTON MAKE: BARTEC

LB19 EATON 1/2" CONDUIT BODY

3P-0655 SEAL ORING CATERPILLAR 3P0655 LOT OF 15

XCK-M1H29 TELEMECANIQUE LIMIT SWITCHES

65965 BRADY CORPORATION CIRCUIT BREAKER LOCK-OUT LOT OF 12 PCS

111685-01 SACOMO RETENTOR SEAL PARKER P/NO. 4515A3157 2

K6U-519 INGERSOLL RAND CRANK PIN SLEEVE K6U519

OC-G01-P1-20 NACHI CHECK MODULAR VALVE

COMPAIR 98262.1062 SUCTION FILTER ELEMENT

SS800L-K587 CLUTCH JAW KIT INGERSOLL RAND

7291 REXROTH FD:05W06 MNR 3712052000

08139 STANLEY REVERSING SPOOL

K5B5075 INGERSOLL RAND HEAD GASKET K5B-507-5  SET (EACH SET 5PCS)

7500100 DROPSAFE SAFETY NET 30KG (66 LBS) FOR OVERHEAD FIXTURES

7500670 DROPSAFE SAFETY NET 30KG (66 LBS) FOR OVERHEAD FIXTURES

2001316B CIRCUIT CARD FEDERAL SIGNAL 12-48VDC ( )

T11E30 WATER PUMP MECHANICAL SEAL 30 MM GLINAR

207730 REPAIR KIT FOR GRACO AIR MOTOR

2250-0100 REPAIR KIT AIR HYDRAULIC PRESSURE SWITCH

714-2520 SEAL KIT 5K714-2520 LOT OF 8

921999 PARKER 10C HYDRAULIC FILTER

OFITE FILTER PAPER WHATMAN50 90MM 100/ 3 1/2 IN DIA

3144007 REPAIR KIT FMC CHIKSAN 2Q06 LOT OF 6

S82-4C4C-5, 82 SERIES GAS IN-LINE FILTER MAKE 3B FILTERS

H-4B02-33-1.75-P4 CYLINDER SEAL KIT

487-1165 FILTER REGULATOR RS COMPONE

702900 GREER BLADDER REPLACEMENT KIT

116232 SPACER 45 X 49 X 9 NOV - VARCO

SLOAN DO-32-AAN HANDLE REPAIR KIT (FOR SACK ASSEMBLY  STEM) DO32AAN

141424 WATER LEVEL PROBE MAKE GROEN

7815057 MAGNETIC PLUG 1" DRAIN PLUG MAKE NOV

Z871470042 ROBERTSHAW B10 THERMOSTAT

RM1A48D75LP40 CARLO GAVAZZI SOLID STATE RELAYS

4130825807 GAUGE HATLAPA EN 837-1 OIL FILLED PRESSURE GAUGE KL1.6

6597-0338-10 WASHPIPE PACKING

R5H-42 VANE INGERSOLL RAND R5H42 LOT OF 10 PCS

DANFOSS EKE1A-080G5300 SUPERHEAT CONTROLLER ( )

EAO 02-061-001 IC SERIES INDICATING LIGHT LED LAMP HER , 60V/1.2W

K6U-469 DRUM THRUST PLATE INGERSOLL RAND

VG64 SUPCO DIGITAL VACUUM GAUGE

 VG64 SUPCO DIGITAL VACUUM GAUGE

60136 NATIONAL OILWELL ASSY PCB 60137

43.41.7.012.2000 GENERAL PURPOSE RELAY,12V,10A,250V 0

12-501-322 MICO BEARING REPAIR KIT STANDARD MODEL- 13-597-008

12550-001 RECEIVER REPLACEMENT KIT GAI TRONICS

CR20-W LEVITON 20-AMP, 125-VOLT, NARROW BODY DUPLEX RECEPTACLE LOT OF 9

3P-0650 SEAL CATERPILLAR 3P0650 LOT OF 18

110661 TEMPERATURE GAUGE DIAL FACE -50 TO 300 GEGREES 4" STEM 1/2" NPT MOUNT

HS-6000J5 HANDSET VHF RADIO TELEPHPRODUCT CODE 5UMBL0003 BRAND JRC

2110284 REV C PIN CYLINDER FOR 1625-UDBE DISC BRAKE NATIONAL OILWELL VARCO

ESU-16669 WALTER VALENITE INDEXABLE TOOL HER INSERT CARTRIDGE

K6U-519 INGERSOLL RAND CRANK PIN SLEEVE

VTC3031-2 MIDI TURTLE VACUUM PUMP VMECA

INGERSOLL RAND 71053730 SPRING LOT OF 12

CROUZET PB-4R BOARD ASSEMBLED IN MEXICO

GC-70 SPRAGUE DEVICES INC GC-70-1

RS125 AISI316 ROXTEC RS SEAL (CONDATION AS PER PHOTO)

HONEYWELL 902VB1-PG LIMIT SWITCHES ENCLOSED BASIC SWITCH

QOSK11 O-RING SEAL KIT LOT OF 8 O-RING

KM40 KENNAMETAL TK1876801 SHANK TOOLS

CYL 20 X 100/ER 16 REGO-FIX TOOL HER

00-344635-00006 VULCAN HART THERMOSTAT CONTROL 200-450F (SP-463-36)

DANFOSS MBT 5250 TEMPERATURE SENSOR GEA 0005-1534-400

3NA1021 SIEMENS FUSE. 500V 100 AMP

PERMA CLASSIC 120 ART NO.100063 | CL-2049-174431

0444234300 MITSUBISHI DIESEL ENGINE TEMPERATURE SENSOR

8UC7313-1BB30 SIEMENS DOOR COUPLING ROTARY MECHANISM

XSD-A600519 TELEMECANIQUE PROXIMITY SWITCH

KVA-21033N2-7DF1 SOLENOID VALVE KV GLOBAL COMP AIR

HU-338-5 PISTON RING SET INGERSOLL RAND HU3385

31402621 PISTON RING HAMWORTHY 2TF54 MKV LOT OF 6 RING

07986 STANLEY RELIEF SEAT

R X6H62V6D12 MECHANICAL SEAL TYPE3 CALPEDA PUMP SHAFT SEAL REPLACEMENT

SEAL KIT FOR A2V225HM

MF34 SILENCER DEKEN POWER 714-541-4373

T-240004-D BENDIX QUICK RELEASE VALVE T240005-F

F626811 CANON GENUINE FAX BOARD ASSEMBLY

1S-4295 TURBOCHARGER GASKET (1.92MM THICK) CATERPILLAR 1S4295 LOT OF 12

1S-4295 TURBOCHARGER GASKET (1.92MM THICK) CATERPILLAR 1S4295 LOT OF 12

LALIZAS THERMAL PROTECTIVE AID ALUSAFE-T L.S.A CODE SOLAS

56211002 ALFA LAVAL COMPOSITE SPRING

EKE1A - 080G5300 DANFOSS SUPERHEAT CONTROLLER ( )

DRK345 REMOVAL TOOL  /

NATIONAL OIL WELL VARCO – 661007009 – PACKING SET MISSON PUMP

MTL-3043 MEASUREMENT TECHNOLOGY LTD

63PHW-230597F/GA2 SEAL KIT CEPAC SM 230597F/GA2-SK AIR POWER  HYDRAULICS LTD

P055-100 INSERT SYNCLINCAL REINFORCED FOR MARVEL OIL

R35 RING GASKET 316 STAINLESS STEEL GON PETRO

07-3363-1830 PUSH BUTTON MAKE: BARTEC

CB19411-08 SEAL POLYPAK 5/8 IN ID CLOVER TOOL CO. LOT OF 15

XS612B1MAU20 - TELEMECANIQUE PROXIMITY SENSORS

F92B HYDRAULIK BRATTVAAG ASSY 112-118

MD TOTCO E325-30 DIAPHRAGM MARTIN DECKER E325 SERIES

8N452 GASKET CATERPILLAR LOT OF 16

F92B HYDRAULIK BRATTVAAG ASSY 112-118 PACKING POS 4

129.030.020 KREMLIN AIR VALVE ASSY SX GUN (ITEMS AS PER PHOTO)

PARKER 108894-B60 BODY SEAL KIT CB602HL001

97172 BITRON GEAR MOTOR 14W 230V 50HZ

EATON TMCX0751 CABLE GLAND CONNECTOR

1A-0744 VALVE ROCKER ADJUSTMENT SCREW CATERPILLAR 1A0744 LOT OF 8

13-04484-00 KIT SPNR DETER POS B 8480-7874 LOT OF 13

1002012 LOW LEVEL ALARM RELAY CABLE

9001026 TOOL SPOOL INSRT 1-1/2" SPM VALVE

30172475-28-24 GARLOCK BUSHING FOR NOV ST-80 ROUGHNECK

PARKER 108894-R25 ROD SEAL KIT

95704 PIN ACTUATOR ARM PIVOT (DWG 117322) VARCO PIPE HANDLER IBOP  PIN

PSMM-R3D1H MAGNETIC PROXIMITY SWITCH

487197676 ELECTROLUX LAUNDRY FAN WHEEL

7818880 SEAL COUPLING SEAL NOV

020117 DRIVE PINION INCLUDING CIRCLIP STARTWELL ENG. UK