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

7ML1830-1BT SIEMENS UNIVERSAL MOUNTING ADAPTER FOR MUD PIT SENSOR

36530082 ELECTRO MOTIVE ELECTROMAGNETIC RELAY EMD8357415

52472 MUFFLER INGERSOLL RAND

70485436 OIL PLUG INGERSOLL RAND

382-31614 PIN BRAKE INGERSOLL RAND FA5I AIR WINCH LOT OF 6

ED0189B ABB OIL CONTROL SYSTEM POWER 18-31.2V DC

2091081509 STEAM RELIEF VALVE POWER CHOKES

2P26726 IMPACT TOOL MFG WEIR SPM

00-289091-00001 HOBART REPAIR KIT, 3/4" PRESSURE REGULATING VALVE

690376 CAMERON LEAD IMPRESSION SLUG LOT OF 12

307035-06-99 REPAIR KIT VALVE PANEL 4WAY

W71 ALLEN-BRADLEY HEATER ELEMENT LOT OF 10

KPM161B MEGACON EARTH FAULT GUARD

EFKF12Q APPLETON EFKF12Q 04/10M EXPLOSIONPROOF SWITCH

PD3012 NISHISHIBA SILICON RECTIFIER FB30B4B120U157

EV-25A2 DELTROL FLUID PRODUCTS QUICK EXHAUST VALVE

800T-PS16 R ALLEN BRADLEY PILOT LIGHT

4N-4044 CATERPILLAR GASKET 4N4044 0504024711

PMHG152A1 GE MICRO SWITCH LOT OF 10

1720-0299 DTL TECHNOLOGIES REPAIR KIT FOR 3/4" SPM VALVE WITH LONG SPACER

1701-3 WATERMAN HYDRAULICS LINE FILTER 3000PSI

07PP100-05NNP FILTER 100 MICRON 1031211

J024951-107 STEM VALVE DEMCO J024951107

06-038-208 PIN BRAKE FOR NOV A1100-PT DRAWWORKS

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

SHINYBOW SB-5440BNC 8 X 1 COMPOSITE VIDEO (BNC) SWITCHER

M410900P KIT MALLORY TIMER-15MIN-60HZ M481

112114 CYLINDER LINER DAIKIN 4C752

CWR101600-102 CABLE ASSY C010ES OR PSPCWR101600-102 BLACK SIZE 6.20M

NBB10-30GM60-AR-Y94348 PEPPERL  FUCHS PROXIMITY SENSOR

51873 OIL SEAL FOR AIR HOIST MODEL FA5 INGERSOLL RAND 03980927

5937500 MECHANICAL SEAL 5937503

19320A000K VALVE SEAT MYERS PUMP

12819 SINTERED METAL INSERT BAU12819 BAUER LOT OF 6

1250495 FILTER ELEMENT ROLLS ROYCE RRM000246709

NHDFSE0400 FILTER N  A FILTER

214447 SHAFFER REPAIR KIT FOR VALVE 4-2673-1

MONARCH INSTRUMENT 6125-010 PLT200 POCKET LASER TACHOMETER

KOOMY STUFFING  THROAT BUSHING 3003-1131

K6U-412 INGERSOLL RAND THROTTLE SPRING

KC70048 REPAIR KIT BARKSDALE AIR VALVE

118844-48-48 BUSHING SLEEVE 3 X 3 FIBERGLIDE FOR VARCO ST-80 ROUGHNECK

PEPPERLFUCHS AUTOMATION RC15-14-N0 INDUCTIVE PROXIMITY SENSOR Y37319

6001625 HYDRAULIC FILTER ASSEMBLY

16401-2 VARCO BJ TONG DIES FOR HT100 TONG

16218 VANE ROTOR SET NORBAR TORQUE TOOLS (1 SET 6 VANE)  SET

30172475-32-18 BUSHING FOR NOV VARCO ST-80 ROUGHNECK LOT OF 8

HU-514A WRIST PIN INGERSOLL RAND

10004447 CYLINDER LINER O'RING

WP000059 RING INTERMEDIATE FOR TOP DRIVE

2038177 SEAL KIT FOR GRABS TOP DRIVE CYLINDER NOV

G14-263 MECHANICAL SEAL ROPER PUMP

8F302 SEAL FOR SWING BRAKE CYLINDER 611A-002301 GREENE TWEED  CO

65636106 PLUNGER, 5/8" FOR PUMP HP350  MADE IN USA

K6U-KRING SET FOR INGERSOLL RAND WINCH (6 OIL RING 6 COMPRESSION RING)

SS-63TF8 SWAGELOK BALL VALVE, 12-INCH

 SS-63TF8 SWAGELOK BALL VALVE, 12-INCH

PXV-F14 PARKER PNEUMATIC VISUAL INDICATOR 8 BAR MADE IN FRANCE

FMC WECO 3228987 MODEL 22 WECO 3" BUTTERFLY VALVE

1710-3199 REPAIR KIT 3/4" SHUTTLE VALVE KOOMY

788-538 WAGO RELAY MODULE

8223A22 ASCO SOLENOID VALVE

5F6R FLOT VALVE METAL REPAIR KIT

ZIEHL NU125D DREHZAHLWAECHTER SPEED CONTROLLER ( )

65321 OVERSIZED BREAKER LOCKOUT Y3125933 LOT OF 6

V VVGT4 VICTAULIC GASKET VICTAULIC 4IN LOT OF 7

307-61-11150 NYLON HEEL KOMATSU

FP-424C DETCON GAS MONITORING SYSTEM

TERASAKI CDY 4B-204M CONTROL SWITCH

TERASAKI CDY 4B-104M CONTROL SWITCH

HONEYWELL H2S ZAREBA SENSEPOINT H2S GAS SENSOR

B3701A GLAND ASSY BOLT FOR MCM 250 CENTRIFUGAL PUMP NOV P/N. 601102494 LOT OF 10

IN0117 IFM EFECTOR INDUCTIVE SENSOR 4MM NONFLUSH

INGERSOLL RAND 71062582 FA5 BRAKE SHAFT

JNE 203B JRCS PCB CARD MADE IN JAPAN

10050110H MURPHY SWICHGAGE 20T-250-55-1/2 TEMPERATURE SWICHGAGE

4C6499 DRECO BOOM HOIST CYLINDER SEAL KIT 961275-23

40123130 SHOCKET SANDLINE ROPE 1.62" MD TOTCO

INX2058G COOPER CROUSE-HINDS PAULUHN EATON CORPORATION GREEN GLOBE

E10021A CHECK VALVE MD TOTCO E80 LOADCELL

29700006 Kit 6" 1/2 DSPT NON PACE PS-015 LOT OF 7

KTI/RAL00028 INVOLUTE SPLINED COUPLINGS WITH NYLON SAFETY 25482

1S-3267 PLUNGER CATERPILLAR 1S3267

36792307 DOOSAN CHECK VALVE

29465061 HOBART TIMER ASSEMBLY

62090166 MARTIN - PCBA HALLSENSOR M350 LOT OF 6

189-5746 CATERPILLAR SPEED SENSOR 1895746

A3LB2127 PARKER SKINNER SOLENOID VALVE

GILMORE 25413 RK 1" 3K SHUTTLE VALVE REPAIR KIT

8234958 POWERRAIL BUSHING ELECTRO-MOTIVE CENTER BONDED JOINT EMD 0 PCS

71107726 SEAL INGERSOLL RAND

0501-2616-20 WESTCODE N540CH18L00 SEMICONDUCTOR POWEREX 1800V 1715AMP

82810310 CROUZET MOTOR 3000 RPM 24V DC

LP3S STREAM LINE FEDERAL SIGNAL 12-48VDC SERIES B GREEN TYPE 4X

067B2792 ORIFICE FOR EXPANSION VALVE KIT

7113-023-ONO PARKER SEAL KIT

ENTEL CMP750 SUBMERSIBLE SPEAKER MICROPHONE

636077 ARO HIGH PRESSURE GREASE BOOSTER HANDLE SWIVEL INGERSOLL RAND

FP-524C LEL SENSOR HOUSING ASSY , FOR CH4 DETCON P/N: 612-820000-000 LOT 2

3RB2026-1SB0 SIEMENS OVERLOAD RELAY

212841-H KIT REPAIR 3 WAY VALVE FOR SHAFFER COMPE

111685-01 SACOMO RETENTOR SEAL PARKER P/NO. 4515A3157 0

204123 FLOWSERVE 3/4" MIALL VALVES REPAIR KIT

23514970 PISTON RING SET FOR IL71 AND V71 DETROIT DIESEL ENGINES  SET

625.9997 HUBA CANTROL MECHANICAL PRESSURE SWITCH 625

VICTAULIC CAP STYLE 60, 2IN NOV BRANDET 42A NOV BRANDT

AURAND 23M M SERIES CUTTER BUNDLES (SET OF 2)

TMCX0751 EATON 3/4" CABLE GLAND CONNECTOR

FFT HSGK WIRE 1 1/2" NPT BREATHER

H7202, 2 FT. ENERPAC HIGH PRESSURE HOSE 10000PSI 3/8" NPTF ENDS

F9328QM-02 YOKOGAWA YEWFLO PCB CARD

A64 ENERPAC MANIFS OPERATING PRESSURE OF 10,000 PSI MADE IN USA

14694-39 ROTOR BLADE FOR VARCO SSW40 PIPE SPINNER 4

14.0330.0 MAN BW REVISION:1.7 PCB ASSEMBLY TERMINAL  0121E

MARPAC 7-0844 FUEL WATER SEPARATOR FILTER - PARKER

EXIDOR 297 PUSH PAD PANIC LATCH

761069216 GEORG FISCHER INSTAFLEX 90° ELBOW LOT OF 12

8237900 LOWER ROD BEARING ELECTRO-MOTIVE EMD MIBA USA (AS PER PHOTO)

EL178 3KW HEATING ELEMENT

487225615 ELECTROLUX LAUNDRY FAN WHEEL

69489-001 GAI-TRONICS 69489-001 TERMINAL PCB ASSY

3110871 FMC KIT CHIKSON PACKING 4"

30215891 VALVE PLATE INGERSOLL RAND

8L-8227 SEAL CATERPILLAR 8L8227

MD TOTCO E273-40 LOAD CELL DIAPHRAGM WEIGHT INDICATOR

160900010 PISTON HI FORCE HYDRAULICS TOOLS

8305815 SEAL ORING ELECTRO-MOTIVE EMD 80

118035 BALANCED SPRING 120-180 PSI VALVE WM607C

859-304 WEGO RELAY MODULE /TERMINAL BLOCK

RVT075EP-PV PRESSURE RELIEF VALVE PLAST-O-MATIC

MC2W3A MEGACON RELAY