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

Technics SA-DA8 AV Control Stereo Receiver

Leader LFG-1310 Function Generator

Leader LFG-1310 Function Generator

MICROS MWork Station POS System w/Stand

Nikko 301 Solid State Stereo Reciever

Evolis Pebble 4 Printer Card Id

Sony PVW-2800 Video Cassette Recorder

RackSolutions Rack-117-Covers

Datasouth Computer Corp. Documax A3300 Dot-Matrix Printer

EVOLIS TATTOO 2 Basic CARD PRINTER W/ POWER ADAPTERS

Shure WA405 Antenna/Power Distribution w/ 2 Shure SC4 Receiver ( SC4-CV)

Anchor Audio Ensign TL-2A Speaker

SONY HVR-M25U DECK 1080i HDV DV mini DV DVCAM

NEC 6 Blade Base Chassis Main Cabinet w/3x Cards

Tally Dascom T2365 Parallel Ethernet Dot Matrix Printer

Avaya Lucent TN801B MAPD V5 LAN Gateway Interface Card Circuit w/5GB HD w/2x RAM

C.ITOH S4 400 Industrial Dynamic Thermal Transfer Direct Label Printer

Zebra 105SL Plus Industrial Thermal Label Printer

Mackie HR624 MK2 MKII Active Studio Monitor 2-Way Powered Speaker

IER 506 506B05 Thermal Label Printer For Boarding Passes

Fargo Direct to Card 550 Thermal USB ID Card Printer

BUEHLER MINIMET POLISHER 69-1000-160

  AVER MICROPHEXPANSION PAIR VC520 PRO

 Zebra Thermal Printers 1x GX430t, 1x GX420d, 1x ZD410, 1x LP2824 Plus

BK Precision 3050 Wave Signal Generator  BK Precision 1405A Oscilloscope

Cisco WS-C3850-48F-L V07 48 Port POE Gigabit Ethernet Switch with C3850-NM-2-10G

Sun 541-0389 X5040A-Z 20-Port Gigabit Ethernet Network Express Module

Bittree B96DC-FNLLT/E3 M2OU12B 2x48 Patch Bay

Hikvision OEM 4K NVR 16 CHANNEL NO HDD

SecurityMan LCDDVR4-320 10.2" LCD Monitor with 4-CH DVR 2-in-1 System NO HDD

FOCUS FS-412Q Quadvision4

ASUS SimPro Dock Docking Station

IPEVO VZ-X Wireless 8MP Document Camera

Black  ServSwitch Wizard DVI DL Multihead KV2404A 4-Port KVM Switch

Diamond Studiomaster Pro 8-3

SIEMENS BMW A5E00134978 Bedienteil GT1 DIAGNOSTIC TOUCHSCREEN

Mackie HR824 High Resolution Studio Monitor

Epson DS-870 Color Duplex Workgroup Document Scanner

ering station  SMD Rework Station

Hasler IM280 Mailing System Meter

Cisco Meraki MS250-24P-HW 24-Port Gigabit PoE Switch UNCLAIMED

Magicard Rio 2E STD Color ID Card Printer

HID Fargo DTC4000 Thermal Transfer Full Color ID Card Printer

Avery Dennison Monarch 9906 Thermal Barcode Label Printer USB

Pro Acoustics SD4 Ceiling Tile Speaker

Oki D22810A Microline 321 Turbo 9 Pin Dot Matrix Printer

Magicard Tango 2e ID Card Thermal Printer

 ListingBlackMagic Design Teranex 2D Processor

APC AP7732 18-Outlet 208V Rack-Mount Automatic Transfer Switch

Crestron PC-100 Power Conditioner 100

Oki Microline 521 GE8258A 9-Pin Printer

AudioSource AST-SUB10 Stereo Subwoofer

COMTROL DeviceMaster RTS 16RM RJ45 1E Ethernet Server

EIKI LC-XL100 Industrial Projector

AKAI 4000DS MKII Reel To Reel Deck

DIGI CM32 32-Port Console Server | 50000838-05 |

Conrac Monitor ( 38-V42ILA-B2 )

Mitel IP 485G Gigabit Telephone

Dahua DHI-VTO4202F-P-S2 2MP Apartment Door Station Outdoor Video Camera

Ruckus T610 Outdoor WiFi Access Point 9U1-T610-US01

QSC Digital Audio Router Rave 161S

Bantam TT ADC 96 patchbay 2

HHB BURNIT Plus CDR-830 Professional Compact Disc Recorder

OKI Microline 321 Turbo Dot Matrix Impact Printer GE7100A

EtherWan EL9100-31B Hardened Media Converter

Tascam CC-222SL MKII Professional Cassette/CD Recorder

ELO Touch Solution ET1940L Open Frame 19" Touch LCD

Rimage Media 600 Lot CD-R Everest White Print Surface 2002058

HID Fargo DTC1000 Thermal Transfer Full Color ID Card Printer

Epson LQ-590 Impact Dot Matrix printer

Havis C-TMW-INUT-01 Tunnel Mount Assembly For 2013-2019 Ford Interceptor Utility

Cisco SG300-28P 28-Port Gigabit PoE Managed Switch

Lectrosonics LMa Transmitter UHF Receiver Block 24

Marantz PMD500U Stereo Double Cassette Deck

Vaddio EasyUSB PRO MIC I/O Interface 4-Ch Professional MicrophInput Device

OKI B4600 Monochrome LED Printer N22106A

Fairbanks Scales Ultegra SCB-R9000-14V Scale

Cisco SG300-28P-K9 28-Port Gigabit PoE Managed Switch

ZEBRA S600 BARCODE LABEL PRINTER

Fujitsu ScanSnap iX1400 Document Scanner

G4S Tech CAB4A Power Supply

QSC Rave 160s Digital Audio Router

StarTech SV565UTP USB VGA KVM Console Extender over CAT5 UTP

Cisco ASA5545-X Adaptive Security Appliance

Cisco SG300-52P 52-Port Gigabit PoE Managed Switch

ETC Colour Source Transmitter

Frye Electronics FONIX 6500 Hearing Aid Test System Module

Cisco Meraki MS120-24P-HW 24-Port PoE Cloud Managed Switch UNCLAIMED

EAW JF-60 2-Way Full Range Speaker

WatchGuard Fire M370 Network Security Appliance WL6AE8

Watchguard XCS Network Firewall Security Appliance BL5E4E3

Calsense ET2000 Irrigation Controller

Peavey Microbass Amplifier

OKI LE810DU / LE810DT 92304105 Direct Thermal Barcode Printer USB Parallel

OKI MICROLINE 321 Turbo 9-Pin Parallel Dot Matrix Printer

LOT OF 6 XeroxToner 2X 0600R01049 | 1X 006R0151 | 1X 006R01050| 2X 006R01052

Avaya G700 Media Gateway 700259898

Cisco Meraki MS120-8FP 8-Port PoE Gigabit Ethernet Switch UNCLAIMED

Epson WorkForce DS-520 J341A Duplex Color Document Scanner USB

Epson LX-800 P70RA Dot Matrix Printer

StarTech A

International OnCommand Wireless OBD diagnostic link 4076805c1

Fujitsu Fi-6670A High Speed ADF Duplex Document Scanner USB SCSI NO IN/OUT TRAYS

Mitsubishi DA-F20 Stereo Tuner

AMX Enova DVX-3255HD-T Presentation Switcher Multi Format Audio Video FG-1906-18

OKI LE810DU / LE810DT Direct Thermal Barcode Printer USB Parallel

ALPS ALQ200GX Dot-Matrix Printer

ADP Dot-Matrix Accel-7350 Printer

OKI Data OKI Microline 321 9 Pin Dot Matrix Printer USB Parallel

Cisco SG300-28PP 28-Port Gigabit PoE Managed Switch

Pioneer VSX-D409 Audio/Video Multi Channel Receiver

Okidata Microline 320 GE5253A Parallel Dot Matrix Printer

Lectrosonics 209.300 MHZ Transmitter

PRINTRONIX T5000R/T5204R THERMAL BARCODE PRINTER

Avaya DSP2 41 12631-06 TelephBoard

NEC CHS2U-US and Server Unit GCD-SVR2, 1x cd-cp00, cd-vm00,cd-prta,2x cd-16dblca

Alpine MRV-F353 V12 Car Audio Amplifier

Telos Multi Line Broadcast System Studio Talk Show PhSystem

Sony EV-A50 Video Cassette Recorder *NO REMOTE*

Canon PIXMA MG3620 Wireless All-In-Color Inkjet Printer

HPEiceConnect 1920S Series Switch JL386A

White OKI B4600 Monochrome Laserice Printer N22016A

Pioneer VSX-D912 6 Channel Equal Power Output Home Theater Amplifier Receiver

Zebra GX420d Thermal Label Printer WiFi

Fujitsu SP-1130Ne Optical ADF Scanner

Vaddio EasyUSB PRO MIC I/O Interface 4-Ch Professional MicrophInput Device*

Primera Bravo Disc Publisher Pro

APC NBRK0570 by Schneider Electric NetBotz Rack Monitor 570

Digidesign 442 I/O Audio Interface

IOSONO audio Equipment

Themis TSVME 132 PLC Board