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。

Si-Tex MDA 1 Metadata Class B AIS Transceiver SITEX - REFURB

Standard Horizon GX2400B VHF Radio AIS Integrated GPS NMEA 30W Hailer Speak Mic

Furo - FA-50 AIS Transponder F/ Navnet 3D, TZtouch - NO MMSI - MODULE ONLY

Marine VHF Fixed Standard Horizon GX2400B VHF/GPS/AIS/NMEA 2000 w/ 30W Hailer

Furo FA-50 Black  Class B AIS Transponder with cable

Digital Yacht SPL2000 Splitter VHF-AIS

Digital Yacht Aisnode Nmea 2000 Boat Ais Class B Receiver ZDIGAISNODE

Icom M424G BLACK Fixed Mot W/ Internal GPS AIS Interface 2.7" LCD VHF Radio

ACR 2886 Aislink Personal AIS Rescue Beacon

Furo FA-50 AIS Transponder Nautical Electronic

GPS Chart plotter with built-in Class B AIS transponder KP-39A

JRC Model JHS-182 AIS Display P/N# NCM-779  Old Demo it Never Installed

Standard Horizon Gx2400b Matrix Black Vhf/ais Integrated Gps/ais/nmea 2000 W/30w

Hailer

KONGSBERG SEATEX AIS 110 NOS

Sitex MDA2 Metadata AIS Dual Channel Receiver

Standard Black VHF/AIS Integrated GPS/AIS/NMEA2000 #GX2400B

Furo - FA-50 - Class B AIS Transponder /

BG B and G Navico V90S 000-14495-001 Black  VHF Marine DSC AIS VHF Only

Standard Horizon Vhf W/Hailer, Gps, Ais Receiver GX6000

Sitex Metadata AIS Splitter

GPS Chart plotter with built-in Class B AIS transponder KP-38A

Garmin AIS 300 AIS Control it Black Transceiver NMEA2000 010-00892-00

West Marine AIS-1000 Class B Transceiver AIS 1000 w/ Cables Receiver and Sender

JRC NTE-182 AIS TRANSPONDER.

Garmin VHF 300i AIS Control it Black Receiver NMEA2000 Radio 300 VHF300

Furo FA-50 AIS Class B Transponder Module ONLY

Standard Horizon GX2400B Matrix Black VHF w/AIS, Integrated GPS, NMEA 2000 30W H

Standard Horizon GX2400 Matrix Fixed Mot AIS GPS VHF Boat Radio  Hailer Black

AIS transmitter marine rechargable

Icom IC-M506 AIS Marine VHF Radio - Rear Mic NMEA 2000 CMD

Raymarine Boat AIS250 Receiver Module E03015

Standard GX2400B Vhf W/hailer Gps Ais Rcvr N2k

Simrad RS90 Black  Marine VHF with AIS Receiver *Fully *

Simrad RS90S Black  Marine VHF with AIS Receiver - Fully

Simrad - AI80 MKD - Class A AIS - Display Head - Good - 26091462

ACR 2680 AIS-300 Nauticast Class B Automatic Identification System AIS Transpond

QK-A026 AIS Receiver with RX Splitter  QK-AS04 Portable GPS Antenna RS

US MILITARY L3 AIS  MARINE VESSEL AUTOMATIC ID SYSTEM TRACKING IT PROTEC

Digital Yacht SPL1500 Splitter VHF-AIS

Raymarine RAY260E AIS Marine VHF Transceiver - Int Version -  Out of

 ListingFuro FA-30 - AIS Receiver F/ NavNet3D, TZtouch - 90 Day. Warr. - Fully

Furo FA-30 - AIS Receiver F/ NavNet3D, TZtouch - 90 Day. Warr. - Fully

SI-TEX MDA-2 Metadata Dual Channel Parallel AIS Receiver Boat Yacht Sailboat

AIS Jction  L3 Commications 253-M0312-02

Shine Micro RadarPlus Class B AIS Transponder

Shakespeare 6396-AIS-R

 Satisfaction - Easy Returns -

GPS Chart plotter with built-in Class B AIS transponder KP-27A

TRANSAS MARINE M-2 Class A AIS Transponder, CH#96

Shakespeare 5225XT-AIS 8' AIS 6DB Stainless Steel Ferrule

SI-TEX MDA-3 Metadata Zero Loss AIS Antenna Splitter Boat Yacht Sailboat

Class B AIS Transponder black  with SART fction

Shakespeare 6396-AIS-R Phase III Automatic Identification System Antenna

Digital Antn 598 Sw S Ais Antenna 8 4 5Db White W Cble

Digital Yacht SPL2000 VHF/AIS Powered Antenna Splitter #ZDIGSPL2000

Marine Beacon Chart Plotter Buoy GPS Transponder AIS Receiver HA-102 Class B

Standard Horizon Fix2400 GPS/AIS

Digital Antenna 598-SW-S 8amp;#39; AIS Marine Antenna w/25amp;#39; Cable

Icom M94D VHF Marine Hand Held Radio w/AIS  DSC

Raymarine RAY260 *AIS* E70088 VHF - Fully

SI-TEX Metadata Dual Channel Parallel AIS Receiver #MDA-2

Icom M94D Handheld Vhf With AIS  DSC #M94D 21

Saab TransponderTech R4-AIS Class A Transponder - Marine Navigation Equipment

SI-TEX MDA-2 Metadata Dual Channel Parallel AIS Receiver

Digital Antenna AIS 4ft 4.5dB White - Marine VHF Radio Antenna - 578-SW

Class BAIS Transponder with SART fction

Digital Yacht AIS100 AIS Receiver

Raymarine Ray260 VHF w/AIS Receiver - - 90 DAY

XINUO 7" Inch Class B AIS  GPS Chart Plotter XF-607 Deep Sea Ocean Sail Fishing

SI-TEX Metadata Zero Loss AIS Antenna Splitter Class B #MDA-3

Garmin GHS11 Black Wired Remote VHF210/210AIS

GPS Chart plotter with built-in Class B AIS transponder KP-25A

KONGSBERG SIMRAD AI70 MKD DISPLAY IT - GOOD WORKING

Standard Horizon Matrix AIS GX2150 Marine VHF Radio 30W RAM3 GX 2150

HANSHIN ELECTRONICS DATA CONVERTER HBR-2000 FOR  AIS - GOOD WORKING

Icom M94D VHF Marine Radio w/AIS  DSC M94D 21

Digital Antn 578 Sw Ais Antenna 4 4 5Db White

Sitex/koden 9618256 Si-tex Mda-2 Metadata Dual Channel Parallel Ais Receiver

SI-TEX MDA-3 Metadata Zero Loss AIS Antenna Splitter

SI-TEX Metadata Zero Loss AIS Antenna Splitter - MDA-3

Raymarine E70088 RAY260 VHF w/ AIS Receiver - Fully

Standard Horizon Vhf W/Hailer, Gps, Ais Receiver GX6000 and NMMA 2000

Standard Horizon Vhf W/Hailer, Gps, Ais Receiver GX6000 and NMMA 2000 # 2

Digital Antenna 876-SW 4amp;#39; AIS Antenna - White

Raymarine AIS250 E03015 Boat Marine AIS Automatic Identification System Receiver

2008-2011 Chrysler Town  Cotry Uconnect RBZ AM FM Radio CD Player 05064678AI

Digital Yacht SPL1500 Antenna Splitter VHF/AIS #ZDIGSPLK1500

Raymarine E70088 Ray260 AIS TRANSCEIVER ONLY for VHF Radio System GOOD

SI-TEX Ais Rcvr., W/ Four Interfaces MDA-2

Digital Yacht AIS100P Pro AIS USB Receiver ZDIGAIS100P Boat Sailboat Marine

Weatherdock easyAIS AIS receiver and easySPLIT active antenna splitter MAY SPLIT

Digital Antenna 578-Sw 4-Foot AIS Antenna - White -  Old Stock

Digital Yacht AIS100 Pro AIS Receiver #ZDIGAIS100P

Sitex/koden 9618257 Si-tex Mda-3 Metadata Zero Loss Ais Antenna Splitter

Digital Antenna 578-SW 4amp;#39; AIS Antenna

SI-TEX Metadata Zero Loss Ais Antenna Splitter MDA-3

McMurdo Transas MT-1VDU iversal AIS Display. Made in UK

 WeatherDock A049 ATEX Easy Rescue AIS SAR Transmitter Marine Boat Rescue

Furo AIS Interface IF-1500AIS w/ Cables, working

✈5in Marine GPS Navigator AIS TFT LCD Screen LED Backlight IP65 Waterproof

Raymarine AIS 250 E03015 AIS Receiver

Digital Yacht AIS100P Pro AIS USB Receiver

Digital Yacht Spl1500 Antenna Splitter Vhf/Ais ZDIGSPLK1500

Boaters’ Resale Shop of TX 2307 1874.01 RAYMARINE AIS250 RECEIVER MODULE E03015

QK-A027 -plus NMEA 2000 AISGPS Receiver with NMEA Multiplexer and Ethernet RS

Shakespeare 5396-AIS Galaxy Little Giant AIS Antenna VHF 4'Ais MD

Weather Dock A049 ATEX Easy Rescue AIS SAR Transmitter Marine Boat Rescue

Furo CB-100 Jction  For FA-100 Class A AIS Transponder CB100 FA100

 5in Marine GPS Navigator AIS TFT LCD Screen LED Backlight IP65 Waterproof 12

JRC JHS-182 AIS Controller NCM-779

Garmin VHF 300 Compact Marine VHF Two-Way Radio Transceiver it No NMEA 2K

em-trak R300 AIS Receiver #413-0058

Digital Yacht AIS100 USB AIS Receiver ZDIGAIS100USB Boat Sailboat Marine

Digital Yacht AIS100 AIS Receiver #ZDIGAIS100

Boaters' Resale Shop of TX 2405 2444.01 GARMIN VHF 300 AIS MODULE w CABLE ONLY

Digital Yacht Ais100P Pro Ais Usb Receiver ZDIGAIS100P

Digital Yacht AIS100 USB AIS Receiver #ZDIGAIS100USB

Garmin GHS11 Black Wired Remote VHF210/210AIS #010-01759-00

Garmin VHF 300i AIS Two-Way Marine Radio w/o Handset and Speaker

 ListingGarmin VHF 300 Compact Marine Black  Two-Way Radio Transceiver it Only

Shakespeare 396-1AIS Antenna For AIS Systems

Digital Yacht AIS100 Receiver - DIY ZDIGAIS100 AIS Marine Navigation

AIS SVDR GYRO INTERFACE GYROLINK - GOOD CONDITION

TMQ NMEABUF8 AIS NMEA DISTRIBUTION

SEATEC NAV-6i Color Chartplotter Internal GPS antenna AIS VHF C-MAP MAX NMEA

JRC JHS-182 AIS I/O Control Board PCB CDJ-3182

QK-AS03 NMEA ProtocolBridge QK-A026 AIS Receiver with NMEA Multiplexer WiFi(RS

Digital Antenna 4amp;#39; VHF/AIS White Antenna w/15amp;#39; Cable

Digital Yacht AIS100 AIS Receiver ZDIGAIS100

Siemens 6SL3352-1AE41-0FA1 Power Block, 6SL3320-1TE41-0AA3 Motor Module 1182 AMP

Siemens 6SL3352-1AE41-0FA1 Puissance Bloc ,6SL3320-1TE41-0AA3 Moteur Module 1182