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

654861 DIAPHRAGM CLUTCH FOR NOV 2040 DRAWWORKS

K6U-546 EXHAUST COVER MANUFACTURED BY INGERSOLL RAND

D10-319A PINION GEAR FOR MOTOR SHAFT MFG BY INGERSOLL RAND

17681-35 PISTON HEAD HASKEL 1768135 FOR GW-35

HP350 HYDROPLEX PUMP REPAIR KIT 00070069 OIL  GAS PUMPS REPAIR KIT NOV

E-DST STATION ECHO DESK LCD/TACTILE PAD FEDERAL SIGNAL CORPORATION

NBA-4141 JRC BATTERY CHARGER AC110V

23137920 THERMAL VALVE KIT INGERSOLL RAND

OLYMPIA T7 PUMP FOR KRUPPS DISHWASHER

UP60-345 HOBART PRESSURE BOOSTER PUMP

OFITE MUD BLANCER (LEVELER IS OK)

PR502H0001 PARKER PISTON RING KIT

21078 AUGER MADE IN USA  /

8464953 PISTON OIL RING SET ELECTRO MOTIVE EMD

1313524 ASSY HYDRAULIC HOSE SIGNAL LINE ROTARY TABLE T-6050 NOV

AA5160004000 FLOWMETER PREAMP PCB CARD

65720375 CAT TRIPLEX PUMP SPARES MADE IN JAPAN

HERNIS SCAN SYSTEMS A/S PCB 22041 REV A REV B

223669 WIPER ROD, 19" CYL 160K TENS NOV SHAFFER

FRICTION DISC AMCLYDE P/N 961274-28 FOR CH SERIES PLANETRY HOISTS SET OF 9

231-715 BRAKE LEVER INGERSOLL RAND

CCS 646GZE7-7011 PRESSURE RISER TENSIONER SWITCH NOV SHAFFER

HP0590G GROUND MOUNTED PERIMETER GREEN LIGHT

LIEBHERR ELECTRONIC 917851314 PCB CARD

CLX16 PARKER AUTOCLAVE 1 IN ELBOW 20000 PSI

86778 PIN CLEVIS NATIONAL OILWELL VARCO NOV

56036 GROUND DETECTION PCB BAYLOR ELMAGCO 7838

836-C7A ALLEN BRADLEY PRESSURE CONTROL SWITCH

725R175 SONCEBOZ CHART DRIVE ITT SNYDER

150995 HJL-CM6083 FLOATING BALL VALVE MACCANNA/MARPAC

204056 SCHUNK HSK63A 20MM HYDRAULIC TOOL HER 90MM PROJECTION

22110415 INGERSOLL RAND UNIVERSAL COMMUNICATION MODULE

RIDGID 24" HEAVY-DUTY STRAIGHT PIPE WRENCH

VALVE SEAT PULLER HEAD 3J FOR MUD PUMP (REPAINTED) NATIONAL OILWELL VARCO

231-719 BRAKE ADJUSTING SCREW INGERSOLL RAND

HLK-319-12 INGERSOLL RAND 03694676 PINION

JRC CCL-247 PCB CIRCUIT H-7PCRD1171A PC703 MADE IN JAPAN

4WH 6 D53 REXROTH/ DIRECTIONAL VALVE MNR R900449957 4WH6D53

090-KB001-600 SEAL KIT MILLER

231-715 LEVER BRAKE AIR HOIST INGERSOLL RAND 400046

5104416 LIEBHERR SHUTTLE VALVE 3WAY 510441614

KMW 582780 C KAMEWA PCB CARD  /

1949-001 DEMCO STEM SEAL ASSEMBLY 001949-001 LOT OF 7

K6U-744A INGERSOLL RAND AUTOMATIC BRAKE REVERSE K6U744A

W0508SB060 WESTCODE RECTIFIER DIODE LOT OF 7

UP30-420 HOBART RU HANNING DRAIN PUMP 775854-3

MD TOTCO E273-40 LOAD CELL DIAPHRAGM WEIGHT INDICATOR

K5B546-KRING PISTON RING SET INGERSOLL RAND K5B-546

PORTA TOOL RC1-A  RC1-B  SCISSOR RING COMPRESSOR

KMW 582773 C PCB    /

HOBART 00-475185-00003 OVERLOAD RESET 475185-3

K6U-945S REVERSE VALVE BUSHING INGERSOLL RAND K6U945S

3N4416 PYROMETER CATERPILLAR  /

PCA 121A PCB BOARD  /

JRC NVT-161 MICROPHUNIT IBUKI MIC-P2 PCB BOARD

PC2262 HELVAR ELECTRSONIC PC2262/2 BREAKOUT MODULE

CXE160LF TELESTE POWER SUPPLY UNIT

T2385-3 SEAT RING ASSY BEL GATE VALVES T2385-3-1

3162331 NOSE PLUNGER MECHANICAL HALLIBURTON HT-400 (316.2331)

2511303 MANITOWOC J  Q ICE MAKER CONTROL BOARD

 2511303 MANITOWOC J  Q ICE MAKER CONTROL BOARD

08136 STANLEY MAIN SHAFT FOR THE IW16 IMPACT WRENCH

E57B-24 MARTIN DECKER DIAPHRAGM 2678065 MARTIN DECKER DIAPHRAGM

L809S VOLCANO 81021412 MADE IN JAPAN LOT OF 8

COMPRESSED GAS REGULATOR 3500 PSIG 1665484 USE ONLY WITH OXYGEN

510441614 LIEBHERR SHUTTLE VALVE

100237 HATLAPA 1-50 BAR SOLENOID VALVE

LHK-44-S4-11-300 HAWE LOAD-HING HYDRAULIC VALVE LHK-44

DRIHDR01 ROBWAY CRANE DRUM ROTATION INDICATOR ASSY

NQE-7700A JRC JUNCTION  MADE IN JAPAN

205665 POPPET CHECK VALVE - NATIONAL OILWELL VARCO

MINI HOTPLATE HP2310B BARNSTED THERMOLYNE ,240 VOLTS ,50/60 HZ MADE IN USA

30173757 REV B SLIDE RING FOR NOV ST-80 ROUGHNECK MADE IN USA LOT OF 11

 PARKER STAT-O-SEAL P/N 600-0002-1/4 (1/4") 0 PCS

62708FTDD180 NOV VARCO VSM300 SHALESHAKER SCREEN TBC180

COMPAIR HSK1937 SERVICE KIT – 1500HRS REAVELL

DOW CORNING 732 MULTI-PURPOSE SEALANT LOT OF 12

62708FTDD165 NOV VARCO VSM300 SHALESHAKER SCREEN TBC165

VC0027 MSI PRODUCTS LOW TORQE VALVE INSERT 2 IN STD 13EFT0005

FLH-150 ANCHOR WINCH HEATOR P/NO.17015005007

R1701250XX REXROTH PRECISION HOUSING

ROSS HILL 200D343 PCB VOLTAGE FEEDBACK SCHEM  ASSY 0509-3000-00

2950-704 HAMMER PIN INGERSOLL RAND 2950704 LOT OF 8

INGERSOLL RAND PHS AIR PENDANT REMOTE FOR WINCH

32015174 PISTON RING SET INGERSOLL RAND  SET

VERSA VALVE PNEUMATIC VALVE SOLENOID VIA-4522-SC0007 3/2 WAY

S251 FISHER CONTROLS REGULATOR

96290 VARCO VDS PCB CARD

112534 SEA TEL PCB BOARD

1800-09654 MOTOR SHAFT ASSEMBLY ALFA LAVAL 83387 (81305)

VZL-3301-11S-155-167 VERSA VALVE VAC 200

1" MP- NIPPLE CLOVER TOOL CO. W/P. 20000PSI

G561M SHEAR FLOW VALVE  REGULATORS MADE IN USA

C61000-05 CLOVER TOOL COMPANY HT 973831

K352352 SEAL KIT SCHRADER BELLOWS K352366

7296 MAK AIR STARTER VALVE ASSY 6M281AK

30217640 INGERSOLL RAND VALVE SEAT

K5B546-KRING INGERSOLL RAND PISTON RING KRING SET

RSM200K ENERPAC REPAIR KIT

CAMERON CHECK VALVE 1 1/2 INCH REPAIR KIT 5000PSI

P-107410-K0000 REXROTH AVENTICS CYLINDER BORE SEAL KIT R433024228  KIT

MANUAL TONG DIE BJ 16402-6

999-02-1048-002 AUTELDAC 4 GAI TRONICS PCB CARD / 999-05-1048

NORGREN 03029902 VALVE EMERGENCY STOP INLINE 3/2-WAY 335L/MIN 10BAR

TORQLITE RT40PR PISTON ROD

206-734 GRACO REPAIR KIT FOR BULLDOG AIR MOTORS  KIT

2-75-3SX STEM MM INTERNATIONAL MADE IN USA

MD TOTCO FLUID HAND PUMP MODEL 101 ITM 10036131-002

LYNX V3 RP VIGILANCE WATCH ALARM MARINELEX TECHNOLOGIES

140232-10-01-03 STEM PACKING FOR 3 1/16" 10000 PSI LOT OF 10

66-10LK75M1 FLOWSERVE LIMIT SWITCH KIT OPT SERIES 75, SIZES 10

50658451 SEAL KIT TORQE WRENCH CYLINDER ASSAMBLY SCD 30113164

UGI-417 GYRO COMPASS INTERFACE SHANGHAI ORIENT MARINE

99-31007 REPAIR KIT FOR HYDRO MOTOR

T3 ENERGY EQUIPMENT 102928.17-001 POPPET 20378625

86203 VERSA SOLENOID VALVE REPAIR KIT  KIT

QUANTEM R6004 TEMPERATURE CONTROL, 150-500F, 120240V QUANTEM 68-A21-LZ087-1

6312.132-418-1 BARDEX CORPORATION VALVE BLOCK

BA0027300 MHWIRTH SEAL KIT FOR HYDRAULIC CYLINDER

2934-724 INGERSOLL RAND HAMMER 2934724

110458-14 VETCO PISTON WEAR BUSHING FOR VETCO 18-3/4"

212842 REPAIR KIT FOR V4 NL SHAFFER

YDS-10 AUTOMATIC PUMP CANTROL 220-240V / 50/60HZ

14647 TUBE CENTRIFUGAL FOR MUD LAB LOT OF 12

21V9M071 9/16" STRAIGHT NEEDLE VALVE MAXIMATOR

98477.1096 PISTON RING KIT 2ND STG GARDNER DENVER

VICTAULIC SERIES 716 CHECK VALVE SIZE 3/88.9

CURRENT SENSOR CTL202HTS/1KY72

K5B-H505 INGERSOLL RAND CYLINDER HEAD K5BH505

TEF2440 TRANBERG LED LOW GLOBE ASSEMBLY 4528 GREEN 120 VAC

2J-31601-02 PILOT LIGHT 480V 6" LEAD LOT OF 12

60B1S110233NNAL CAPACITOR 233-280 ALLIANCE LAUNDRY SYSTEMS 37377 LOT OF 9