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。
SIMPLEX MULTI-VOLTAGE CONTROL RELAY MR-201/C
DM SSLOAN A-15-A MED DISC FOR ROYAL REGAL
DM SSLOAN A-154-A DIAPHRAGM FOR ROYAL REGAL
DM S ALLEN BRADLEY W70 THERMAL OVERLOAD HEATING ELEMENT
DM SASHCROFT 3 1/2" PRESSURE GAUGE 1/4 NPT 0-80 PSI 35-W1005P-02L-XUL
DM SASHCROFT 3 1/2" PRESSURE GAUGE 1/4 NPT 0-80 PSI 35-W1005P-02L-XUL
DM SDEWALT BALL BEARING 330003-13
SKF RADIAL DEEP GROOVE BALL BEARING 6305 2RSJRM
SKF RADIAL DEEP GROOVE BALL BEARING 6303 2RSJRM
DM S SKF SHAFT SEAL 1-1/4 X 2 X 1/4" 12428
DM SDM S SKF SHAFT SEAL 1-1/4 X 2 X 1/4" 12428
DM SSKF DEEP GROOVE BALL BEARING BORE 8MM O.D. 22MM WIDTH 7MM 608 2RSJEM
DM SSKF DEEP GROOVE BALL BEARING 10 mm ID, 30 mm OD, 9 mm WIDTH 6200 2ZJEM
DM SDM SSKF DEEP GROOVE BALL BEARING 10 mm ID, 30 mm OD, 9 mm WIDTH 6200 2ZJEM
PARKER 1-1/2" BAN PISTON SEAL KIT PK152HLL01
PARKER 2" BAN PISTON SEAL KIT PK202HLL01
FABORY STAINLESS STEEL U-BOLT LONG TANGENT 304 5ZA96
DM SSLITE 9W PL FLUORESCENT BULB G23 2 PIN 4100K PL9/SP41K
SKF RUBBER SINGLE LIP OIL SEAL 11566
DIXON 3/4" AIR KING CLAMP 125-100-0770
MARTIN TAPERED BUSHING 1610 1-3/8
DODGE TAPER LOCK BUSHING 1-1/8" BORE 117084
NOKIA 10GbE/CPRI 3-7 SMDF 10.3G 15km I-TEMP S01:01 ALLU17--FA41112456
DODGE TAPER LOCK BUSHINGS 1310 X 1 KW 119398
GE GENERAL ELECTRIC ALL GLASS BEAM LAMP 8-WATT 12 VOLT H7555
TBI BBN60-5 BRASS SHIM 60" LENGTH x 6" WIDTH .005 THICKNESS
MARTIN QUICK DISCONNECT BUSHING SH 1/2
HCH BALL BEARING 55mm ID x 90mm OD x 18mm WIDTH 6011-2RSC3
MRC DEEP GROOVE BALL BEARING 35 mm ID 72 mm OD 17 mm WIDTH 110KSFF
DODGE TAPER LOCK BUSHING 1.0000" BORE 1/4 x 1/8" KEYWAY 117164
HOOVER DOUBLE ROW SHIELDED BALL BEARING C-5204FF
CAMLOCK FEMALE COUPLER X HOSE BARB CAMLOCK C150 304SS
TB WOODS SURE GRIP BUSHING 1" BORE 1/4 x 1/8" KEYWAY 1.25" LTB SH1
TB WOODS SURE GRIP BUSHING 1" BORE 1/4 x 1/8" KEYWAY 1.25" LTB SH1
MARTIN SPROCKET 35BS13HT 5/8 13 TEETH 5/8" BORE CHAIN #35
BULLARD FACE SHIELD 840M WITH HARD HAT ADAPTER 1439300
NOKIA FOTB SFP 10.5Gb 10km 1310nm I 473472A.101 RTXM228-402-C40 CLASS LASER 1
DM SSPEED WIRING PRODUCTS HD-02-0606 IVERSAL M-N-L 2 CIRCUIT
DM SSWAGELOK SS-400-1-6 MALE CONNECTOR 1/4" TUBE OD X 3/8 MALE NPT
LDI INDUSTRIES LSP51-05 SIGHT PLUG GAGE 3/4" NPT 1U924
DM SMcMASTER CARR BREATHER VENT FILTERS 1/4” 9833K22 3 SCFM LOT OF 8
MAGNILUMEN 500-DRIVER-40W-2WH LED DRIVER 2-WAY PLUG PLAY HARNESS 110-277V
DM SSWAGELOK SS-4-TA-7-4 TUBE 1/4" TUBE OD X 1/4" FEMALE NPT
MALLORY C32FD3706 6UF/370VAC A10000 AFC
MASKA SPLIT QD BUSHING SDSX1-5/8 BORE 1-5/8"
SWAGELOK SS-2-T STAINLESS FEMALE TEE 1/8" X 1/8" X 1/8" NPT
DM SGRAINGER 6UEA9 TEMPERTURE LIMIT CONTROL 210F CLOSING OPEN 250°
SERVICE FIRST TRANE CTR1146 CONTACTOR 2 POLE 30 AMPS 24VAC
SERVICE FIRST TRANE CTR1146 CONTACTOR 2 POLE 30 AMPS 24VAC
SWAGELOK SS-1210-P PLUG FOR 3/4" TUBE FITTING
DM SMARSHALLTOWN 1/4" NPT VACUUM PRESSURE GAUGE 0/30 HGKPA 2.0 22K G14380
MCGILL CF1-1/2S FLAT CAM FOLLOWER
DM S MCGILL CF1-1/2S FLAT CAM FOLLOWER
DM S OPTO 22 I/O MODULE IDC5Q
DM SDM S OPTO 22 I/O MODULE IDC5Q
LEVITON SMARTLOCK PRO SLIM GFCI OUTLET W/ WALL PLATE N7599-T
DM S LEVITON SMARTLOCK PRO SLIM GFCI OUTLET W/ WALL PLATE N7599-T
HANKISON FILTER CARTRIDGE 07-4441-01
ITE GOULD SIEMENS () THERMAL OVERLOAD HEATER ELEMENT T60
BANNER MB3-4 MODULATED PHOTOELECTRIC AMPLIFIER LOGIC MODULE
FAG 6304.2ZR.T.C3 METAL BEARING
SKF RADIAL DEEP GROOVE BALL BEARING 6305-2RSJEM
DM S SKF RADIAL DEEP GROOVE BALL BEARING 6305-2RSJEM
ALLEN BRADLEY SLC 500 INPUT MODULE 1746-ITB16 SERIES C
DM S ALLEN BRADLEY SLC 500 INPUT MODULE 1746-ITB16 SERIES C
LEITGSDOSE BOSCH REXROTH 1834484057 DIN 43650 CONNECTOR KIT
DM S SQUARE B3.30 OVERLOAD RELAY THERMAL HEATER IT B 3.30
PHILIPS CENTIUM RAPID START ELECTRONIC BALLAST 120-277 VAC ICN-2S40-N
2 PHILIPS CENTIUM RAPID START ELECTRONIC BALLAST 120-277 VAC ICN-2S40-N
GUARDIAN ELECTRIC CS-2200-RIGHT
HENRY 891S-3/8 STRAINER
SIMPSON H235-1-0170-1-2-0 DIGITAL PANEL METER
USG AMETEK 30 PSI GAUGE 2" DIAL 1/8" NPT BACK BRASS P500K 163930
VICKERS 038441 SHAFT BEARING
DM S1/4" FNPT 304 STAINLESS ROD PIPE CAP COVER SP114
SKF BALL BEARING 25MM ID X 52MM OD X 15MM WIDE 62052RSJEM
SKF BALL BEARING 25MM ID X 52MM OD X 15MM WIDE 62052RSJEM
CONSOLIDATED PRECISION BEARING CONS 2911
ALLEN-BRADLEY 40309-108-51 REAL PART MOTING HARDWARE
SKF RUBBER SINGLE LIP OIL SEAL 17284
ASCO 1/4" NPT SOLENOID VALVE COIL 110/120 VAC MP-C-080 238210-032-D
RBC S40LW CAM FOLLOWER CF-1-1/4
DELL MBE2147RC 146GB HARD DRIVE 15K RPM 6GBPS
40) DEMATIC CORP CAP SCREW HEX 5/16 - 18 X 3/4 GR.2
DM SMRC PREMIUM BALL BEARING DOUBLE RUBBER SEAL 200SZZ
DM SDM SMRC PREMIUM BALL BEARING DOUBLE RUBBER SEAL 200SZZ
SWAGELOK SS-200-1-4 316 STAINLESS STEEL FITTING 1/8”TUBE x 1/4” MNPT
SWAGELOK SS-400-5-2 45° MALE ELBOW 1/4" TUBE X 1/8" MNPT
DM SSWAGELOK SS-4-P PLUG FOR 1/4" MALE NPT
SWAGELOK SS-400-8-4 STAINLESS FEMALE ELBOW 1/4 TUBE OD X 1/4 FEMALE NPT
DM SSWAGELOK SS-400-8-4 STAINLESS FEMALE ELBOW 1/4 TUBE OD X 1/4 FEMALE NPT
SWAGELOK SS-400-R-8 TUBE 1/4" TUBE OD X 1/2" TUBE O.D
LDI INDUSTRIES GLASS SIGHT GAGE, SIGHT DIA. 3/4" FITTING DIA. 3/4" NPT
DOSIMETER 611 0-5 R GAMMA X-RAY POCKET DOSIMETER 0-5R
SPEEDAIRE 30E667 QUICK COUPLER 3/8" FNPT, SPEEDAIR 30E665 3/8" COUPLER
EATON CUTLER HAMMER MSH OVERLOADS - CHOOSE YOUR MODEL
DM SRACO 5178 GANG DUPLEX OUTLET WEATHERPROOF COVERS
ALLEN BRADLEY 1786-TPR/C COMMSCOPE 5065 CONTROL NET 9700851
DM SSLOAN ROYAL MED DISC FOR ROYAL REGAL A-15-A
SQUARE D AU OVERLOADS - CHOOSE YOUR MODEL
LDI IND. McMASTER CARR 3277K56 HIGH PRESSURE SIGHT PLUG GAGE 1/2" NPT
GENERAL ELECTRIC THERMAL OVERLOAD CR123C00.0A WITH SCREWS PICK YOUR RANGE
SWAGELOK316 STAINLESS 1/4" FEMALE NPT X 1/4" FEMALE NPT ELBOW SS-4-E
DELL AMD RADEON HD 8490 1GB OUGA11 V309 GRAPHICS VIDEO CARD 109-C55357-00-02
· AMD Radeon HD 8490 · 1 GB
MRC DEEP GROOVE BALL BEARING 45mm ID 75mm OD 16 mm WIDTH 109KSZZ
CISCO GLC-SX-MM TRANSCEIVER COM 30-1301-04 CLASS 1 21CFR1040.10 A V04
CISCO GLC-SX-MM TRANSCEIVER COM 30-1301-04 CLASS 1 21CFR1040.10 A V04
SQUARE D B STYLE OVERLOADS - CHOOSE YOUR NUMBER
DM SVIDEOJET 205604 INCANDESCENT LAMPS 14 V LOT OF 8
RED LION CONTROLS PROXIMITY SENSOR 10 FT 3 WIRE PSAC0000
DM SRED LION CONTROLS PROXIMITY SENSOR 10 FT 3 WIRE PSAC0000
DELTROL CONTROLS 3 AMP RELAY W/ BASE ¾ HP 600 VAC 120 COIL V 1663PDT 20308-84
WESTWARD INFARED THERMOMETER 6JG66B
DM S SQUARE D DD160 THERMAL OVERLOAD HEATER ELEMENT
OMRON Z-15GW22-B-7-K ROLLER MICRO SWITCH
DM S WESTINGHOUSE FH43 THERMAL OVERLOAD HEATING ELEMENT
HONEYWELL LOCKING GUARD FOR T87F OPAQUE LENS COVERS SUBBASE TG587F 1016
TB WOOD'S 5JE SURE-FLEX RUBBER COUPLING
SYLVANIA LUMALUX 400 WATT HIGH PRESSURE SODIUM LIGHT BULB LU400/ECO S51
ALLEN BRADLEY 800G-11SE129K LEGEND IT 5 PCS.
HONEYWELL BREAKER / CONNECTOR BRACKET 51305840-100
MARTIN 40BTB21H TAPERED BUSHED SPROCKET 21 TEETH
SYLVANIA M175/U/MED METALARC LAMP 64479-0
SPRECHER SCHUH D5-3T5 GREEN PILOT LIGHT 120VAC 22MM
SPRECHER SCHUH D5-3T5 AMBER PILOT LIGHT 120VAC 22MM
NILFLSK 3-3/8" TEMPERATURE GAUGE
SWAGELOK SS-4-HLN-3.00 HEX 3" LONG MALE NIPPLE 1/4" MNPT X 1/4" MALE NPT
SWAGELOK SS-810-7-6 STAINLESS FEMALE CONNECTOR 1/2" TUBE O.D X 3/8 FNPT
WHITE RODGERS FAN DPST SEQUENCER ON 1-20 SECONDS 40-110 SEC 24A34-3
SWAGELOK SS-6-HLN-3.00 STAINLESS NIPPLES MALE 3/8" NPT 3" LONG
SWAGELOK SS-200-P PLUG FOR 1/8" TUBE FITTING