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
PMC CIRCUIT BOARD 31-50310N01 HSSB SLAVE REV 1.10, ESI # 05105-000
PMC CIRCUIT BOARD 31-50310N01 HSSB SLAVE REV 1.10, PCB 30-50310N01
PMC CIRCUIT BOARD PCB PDI 31-50311N01 ESI # 06776-000, HARD DRIVE 77-50256N01
PMC CIRCUIT BOARD PDI 31-50311N01, 77-50256N01 HARD DISK SCSI QUANTUM 1280S TM12
PMC DYN AMPLIFIER INTERFACE BOARD 31-50278N01, 05106-000,
PMC P2 POWER CIRCUIT BOARD 31-50312N01 30-50312N01 06777-000,
PMC Power Mate Corp EMA 24 C Power Supply
PMC Z-LIMIT CIRCUIT BOARD 31-50286N01,
PMI80-F90-IU-V1 For P+F Inductive Positioning System Sensor
Pneumax 1071.52.3.6.M2 Solenoid Valve
PNEUMAX CONTROL VALVE ASSEMBLY 1022.52.3.5 M3R
PNEUMAX CYLINDER 1305-125-600-01A HEAVY DUTY CYLINDER STROKE 600 P MAX 12BAR
Pneumax Pneumatic Cylinder 1274.50.0050.X NOS
PNEUMAX PNEUMATIC CYLINDER 1305-80-650-01 P MAX 12 BAR CORSA STROKE 650 80AR
PNEUMAX PNEUMATIC CYLINDER 1308.50.0400.01 PMAX 10 BAR 2Q 50 STROKE HUB CORSA 40
Pneumax Pneumatic Cylinder 1319.32.0160.01 NOS
PNEUMAX Progressive Start Up Valve Size 3 17310.M2
Pneumax Rg1319/0001 / Spare Part / /Boxed
Pneumax Scorpion Pneumatic Round Air Cylinder To ISO 6432 1260.32.125.MA NOS
Pneumax Scorpion Valve 1021.52.3.5.M2
Pneumax Solenoid Valve 1071.52.3.5.M2
PNEUMAX VALVE COD. 773N.32.0.1.A W/ MB5 24VDC 5.5W
POCKET TOOL HOLDER
Poketmonitor Premiums | PMT 70iCu sep/out
POLAR 015722 ZA3.015770R ITEM 744981-H6-1
Polaris ISRW 3/0 Direct Burial Connector Wire 3/0 to 1/0 AWG 600 Volt
POLARIS MULTI-TAP CONNECTOR IPLMD250-8 MCM 6AWG INSULATED DUAL SIDED MOUNTAB
POLO S.R.L 97A01A0 POWER CONVERTER AND MAGNETIC COMPONET
POLY GLASS PRESSURE VESSEL 011000 0618 W/ POLYETHYLENE INNER SHELL
POLY GLASS PRESSURE VESSEL 0317973 0618 W/ POLYETHYLENE INNER SHELL
POLYGEM Epoxy 10001-LV Low VisCosity Injection Epoxy (case 12)
POLYSONICS DDF5088 120 v in 4-20 output
POLYSPEDE ELECTRONICS Ci-1 E1536A Ci1E1536A circuit board
Polytec IVS-400 Vibrations Sensor IVSE400 Vers.:FG1
PONAM 3.2500 RING GAUGE GAGE W/ WOOD BOX
PONAM PIN PLUG GAGE GO .7500 NO GO. .7505
PONAM PIN PLUG GAGE GO .8750 NO GO .8753
PONAM THREAD PLUG GAGE 7/8-36 UNS-2A PD .8525
PONAM THREAD RING GAGE 1-1/2-16 UN-3A, GO PD 1.4594
PORT ELECTRONICS 2000AS-2 DIGITAL VOLTMETER HIM
port TracQ Basic Solar Simulator w/ Oriel Merlin Radiometry System Controller
Porter AE-2 Two Card Accessory Fire Alarm Enclosure NIB 3992726
Porter And Brumfield Relay 4264 R40-E1-Y2-V320 2 Amp at 28VDC 12VDC
Posital OCD-SL00G-1212-S060-PAL IXARC Encoder
Positron 751313 Teleline Power Supply Module
Post Glover Dynamic Breaker Resistor DB16D0-7K00-109E0AA0
Post Glover Lifelink 299-423-280 60Hz 120VAC Mark IV Line Isolation Monitor
POTTER & BRUMFIELD CDB-38-30002 RELAY CDB3830002
POTTER & BRUMFIELD CDD-38-30003 TIME DELAY RELAY
POTTER & BRUMFIELD CDD-38-30003 Time Delay Relay
POTTER & BRUMFIELD CWB-38-86000 PROGRAMMABLE TIME DELAY * *
POTTER & BRUMFIELD P&B AMF 19 AP11A-120V STEP RELAY
Potter & Brumfield P41C47DHO103Z03 Relay Contactor XE ROX 109E04190
POTTER 655L60 EMI FILTER 43-8442 250V 60A 60HZ
POTTER AE-14 - 14 Card Accessory Enclosure
Potter Brumfield CHB-38-70012 120v-ac
Potter Electric Wall Fire Horn Strobe Waterproof 24VDC HSLP-24WR-WP LRG QTY HS
Potter Fire Alarm Addressable Isolator Base AIB-6 NOHMI
Potter Fire CA6075 Class A For Mod f/6030/75/6200 Sealed
Potter PAD100-SLCE 127 Point SLC Loop Expander
Potter PFC-6200 254 Point Addressable Fire Alarm Control Panel
POTTER PSN-106 10 AMP 6 CIRCUIT POWER SUPPLY "RED" FACTORY SEALED BOX
Potter RA-6500 160 CHAR LCD REMOTE ANCTR | Same Day Shipping (SEALED)
Potter VSR-FEX VSR-F-EX 450PSI 40-120F Flow Switch
POTTER&BRUMFIELD CSJ38-70010 90/140V . With Paperwork
Power Controls 664f-72-000-00 50A Controller
POWER DISTRIBUTION ASSY. 228970 228966 0209-00087 BOARD CLC INSIGNIA LX900 LASER
Power Dynamics Parker Solenoid Valve 3-C5-2-115CA
POWER ELECTRONICS M246CX 4A/2HP/460V 3PH VARIABLE SPEED DRIVE 90DAY
POWER ELECTRONICS M246CX 4A/2HP/460V CONTROL 115V 3PH VARIABLE 90DAY
POWER ELECTRONICS TRAVERSE MOTION RESISTOR BANK R1046T 460VAC NOS
Power Number 150W | ICS:03 | V:C | 3AW00482AAA | 0282204599
Power Number 150W | ICS:04 | V:E | 3AW 00482 AAA | 0282204599
Power One HD-24-4.8-AG Power Supply 24 VDC @ 4.8A
POWER SOLUTIONS INC. AG300A( AG-300A-S9-007) POWER SUPPLY. E70
POWER SUPPLY CIRCUIT BOARD CMK-C2X 3L092 COSEL LDC15F-1
POWER SUPPLY M300AIWAR 24V 3PH
Power Ten Inc D3C-5500/5500B, Power Supply, Volts 200-240 VAC AMPS 30-25. 419734
Power Ten P63C-8400A DC Variable Power Supply, 190-253, 0-8 V, 0-400 A, 453508
PowerDsine 9501G PD-9501G/AC/B-US Data Networking
POWERDSINE PD6024/AC 24PORT POWER INJECTOR SWITCH
POWEREX VACUUM EVISA E150 PANEL VPD050331 5HP 80 GALLON 230V 3PH VP001504AVA
PowerHold 3B-SH4 4500RPM Pnumatic Actuator
POWERMASTER EATON H364NFK, SAFETY SWITCH, 200A, 600V/250DC, 3P, 150 H.P.,
POWEROHM RESISTOR P809-10E-NC, 53.70OHMS 1050W
Power-one CP680 1787DNPS/A Devicenet Power Supply 115/230v-ac 4.1a 24v-dc 100va
POWER-ONE DC POWER SUPPLY CP291A
POWER-ONE DC POWER SUPPLY CP291A, ITEM A
POWER-ONE PFC250-1024 POWER SUPPLY 85-250V Input 24V Output
POWER-ONE RPM5D5D5D5D5M6S456 POWER SUPPLY, TERADYNE 405-295-00 B, 160687
POWERONE SPF4A4L INTERNATIONAL SERIES SWITCHING POWER SUPPLY
POWERONE SPF4A4V6K INTERNATIONAL SERIES SWITCHING POWER SUPPLY
POWERONE SPF4M3K INTERNATIONAL SERIES SWITCHING POWER SUPPLY
POWERONE SPF4M3V6 INTERNATIONAL SERIES SWITCHING POWER SUPPLY
POWER-ONE,HB5-3/OVP-A,POWER SUPPLY
POWERPAC 1.8° STEP MOTOR K33HLHM-LNK-NS-00 24V
POWERPAC 1.8° STEP MOTOR K33HLHM-LNK-NS-00 24VDC 170W 1200RPM PACIFIC SCIENTIFIC
POWERPAC POWER FEED AL-500S 110VAC 90W MAX TORQUE 650 IN-LB, FOR PARTS
POWERPAC POWER FEED AL-500S 110VAC 90W MAX TORQUE 650 IN-LB, FOR PARTS, ITEM C
POWERPAC POWER FEED CE-500S 110VAC 90W MAX TORQUE 650 IN-LB, FOR PARTS
Powerpact BJA36020 I-Line Circuit Breaker 20A 600Y/347V 3P BJA 20 AMP S80
POWERS CONTROL - TH192DN - 192-204 - DUAL TEMP Pneumatic Thermostat - 45-85F°
POWERTEC C0.5.3R1CH000 1/4-1/2HP 115v Brushless DC Motor Speed Controller 1
POWERTRAN 3KVA TRANSFORMER EA480L3000 SPEF 240/480V 120V 1PH CLASS AARR