福建中立恒自动化设备有限公司
一、摘要 PLC是一种专门在工业环境下应用而设计的数字运算操作的电子装置。
它采用可以编制程序的存储器,用来在其内部存储执行逻辑运算、顺序运算、计时、计数和算术运算等操作的指令,并能通过数字式或模拟式的输入和输出,控制各种类型的机械或生产过程。PLC及其有关的外围设备都应按照易于与工业控制系统形成一个整体,易于扩展其功能的原则而设计。在工业生产的各个领域,机械加工企业为了提高生产效率,采用机械化流水作业的方式,对不同类型的零件分别组成的自动生产线。随着产品机型的更新换代,生产线承担的加工对象也随之改变,这就需要改变控制程序,使生产线的机械设备按新的工艺过程运行,而继电接触器控制器系统是采用固定接线,很难适应这个要求。大型自动生产线的控制系统使用的继电器数量很多,随着PLC的应用日益普及,其使用方法简单,便于掌握,且可靠性,抗干扰性很强,自身具有完善的功能.模块化的结构,使其在工业生产线上的应用越来越广泛。
发展趋势:1.向高速度、大容量方向发展
为了提高PLC的处理能力,要求PLC具有的响应速度和更大的存储容量。目前,有的PLC的扫描速度可达0.1ms/k步左右。PLC的扫描速度已成为很重要的一个性能指标。
在存储容量方面,有的PLC可达几十兆字节。为了扩大存储容量,有的公司已使用了磁泡存储器或硬盘。
2.向超大型、超小型两个方向发展
当前中小型PLC比较多,为了适应市场的多种需要,今后PLC要向多品种方向发展,特别是向超大型和超小型两个方向发展。现已有I/O点数达14336点的超大型PLC,其使用32位微处理器,多CPU并行工作和大容量存储器,功能强。
STEINCO STI-RTD4-1 PCB MODULE STI-RTD4-1/24
STEINCO STI-RTD4-1 PCB MODULE STI-RTD4-1/24
STEINCO STI-RTD4-1 PCB MODULE STI-RTD4-1/24
STEINSOHN F102004A API 6/3 PLUS ANALOG MODULE REV I
STEINSOHN F102004A API 6/3 PLUS ANALOG MODULE REV I
STEMMANN-TECHNIK PCB MULTILAYER 12 WAYS 2109144
STEMMANN-TECHNIK PCB MULTILAYER 12 WAYS 2109144
STEMMANN-TECHNIK PCB MULTILAYER 12 WAYS 2109144
STEMMANN-TECHNIK PCB MULTILAYER 12 WAYS 2109144
STEMMANN-TECHNIK PCB MULTILAYER 12 WAYS 2109144
STEMMANN-TECHNIK PCB MULTILAYER 12 WAYS 2109144
STENTO 7162/3 PCB
STENTO 7162/3 PCB
STENTO AC36BP PCB BOARD
STENTO AC36BP PCB BOARD
STENTO EP602.02926-587 PCB CARD
STENTO EP602.02926-587 PCB CARD
STENTO VMP 530 MAIN STATION REV.01
STENTO VMP 530 MAIN STATION REV.01
STENTO VMP 530 MAIN STATION REV.01
STENTO VMP 530 MAIN STATION REV.01
STENTOFON 6995/2 ALPHATRON PCB CARD
STENTOFON 6995/2 ALPHATRON PCB CARD
STENTOFON A100C01300 PCB CARD 5083/7
STENTOFON A100C01300 PCB CARD 5083/7
STENTOFON CPB PCB 3699/2 / FAST SHIP DHL OR FEDEX
STENTOFON CPB PCB 3699/2 / FAST SHIP DHL OR FEDEX
STENTOFON CPB PCB 3699/2 / FAST SHIP DHL OR FEDEX
STENTOFON CPB PCB 3699/2 / FAST SHIP DHL OR FEDEX
STENTOFON L-306905 PCB CARD
STENTOFON L-306905 PCB CARD
STENTOFON VINGTOR PRB-2 PCB CARD VERSION W1
STENTOFON VINGTOR PRB-2 PCB CARD VERSION W1
STENTOR 1235/6 PCB CARD 1000660100 VERSION 06.03
STENTOR 1235/6 PCB CARD 1000660100 VERSION 06.03
STENTOR 1235/6 PCB CARD 1000660100 VERSION 06.03
STENTOR 1235/6 PCB CARD 1000660100 VERSION 06.03
STENTOR 1235/6 PCB CARD 1000660100 VERSION 6.3
STENTOR 1235/6 PCB CARD 1000660100 VERSION 6.3
STENTOR 1236/2 PCB CARD 66050 VERSION A3
STENTOR 1236/2 PCB CARD 66050 VERSION A3
STENTOR 1236/2 PCB CARD 66050 VERSION A3
STENTOR PCB SLB 1235/5 / FAST BY DHL OR FEDEX
STENTOR PCB SLB 1235/5 / FAST BY DHL OR FEDEX
STI 43706-0010 POWER SUPPLY BOARD 437060010
STI 43706-0010 POWER SUPPLY BOARD 437060010
STI 43706-0010 POWER SUPPLY BOARD 437060010
STI 43706-0010 POWER SUPPLY BOARD 437060010
STI 43706-0010 POWER SUPPLY BOARD 437060010
STI 43706-0010 POWER SUPPLY BOARD 437060010
STN ATLAS / DMT ZK 409 271.124 443 C6115 PCB Card / ZK409
STN ATLAS / DMT ZK 409 271.124 443 C6115 PCB Card / ZK409
STN ATLAS / DMT ZK 409 271.124 443 C6115 PCB Card / ZK409
STN ATLAS / DMT ZK 409 271.124 443 C6115 PCB Card / ZK409
STN ATLAS ADU 405 PCB MODULE 271.114 367/E
STN ATLAS ADU 405 PCB MODULE 271.114 367/E
STN ATLAS ADU 405 PCB MODULE 271.114 367/E
STN ATLAS ADU 405 PCB MODULE 271.114 367/E
STN ATLAS ADU 405 PCB MODULE 271.114 367/E
STN ATLAS ADU 405 PCB MODULE 271.114 367/E
STN ATLAS AEM 402 ANALOG INPUT MODULE 271.138 714/B
STN ATLAS AEM 402 ANALOG INPUT MODULE 271.138 714/B
STN ATLAS ANA 401 PCB MODULE 271.110 677/D
STN ATLAS ANA 401 PCB MODULE 271.110 677/D
STN ATLAS ANA 401 PCB MODULE 271.110 677/D
STN ATLAS ANA 401 PCB MODULE 271.110 677/D
STN ATLAS ANA 401 PCB MODULE 271.110 677/D
STN ATLAS ANA 401 PCB MODULE 271.110 677/D
STN ATLAS C4338 SAFETY SYSTEM BRIDGE PANEL 271.140.833
STN ATLAS C4338 SAFETY SYSTEM BRIDGE PANEL 271.140.833
STN ATLAS ELEKTRONIK DEM401 DIGITAL INPUT MODULE
STN ATLAS ELEKTRONIK DEM401 DIGITAL INPUT MODULE
STN ATLAS GEAMOT 90C CONTROL PANEL 271.130.357 C4338
STN ATLAS GEAMOT 90C CONTROL PANEL 271.130.357 C4338
STN ATLAS MARINE ELECTRONICS 029.297 724 PCB MODULE 29297724
STN ATLAS MARINE ELECTRONICS 029.297 724 PCB MODULE 29297724
STN ATLAS MXM 402 MULTIPLEXER MODULE 271.130 442/C
STN ATLAS MXM 402 MULTIPLEXER MODULE 271.130 442/C
STN ATLAS RDA 402 PCB 271.107 087 RDA402
STN ATLAS RDA 402 PCB 271.107 087 RDA402
STN ATLAS RDA 402 PCB 271.107 087 RDA402
STN ATLAS RDA 402 PCB 271.107 087 RDA402
STN ATLAS ZDE 402 MODULE 271.124 387/C AEG B 271.124 386/A
STN ATLAS ZDE 402 MODULE 271.124 387/C AEG B 271.124 386/A
STN ATLAS ZDE 402 MODULE 271.124 387/C AEG B 271.124 386/A
STN ATLAS ZDE 402 MODULE 271.124 387/C AEG B 271.124 386/A
STN ATLAS ZK 409 PCB CARD 271.124 443/F
STN ATLAS ZK 409 PCB CARD 271.124 443/F
STN DEBEG 8280 EMERGENCY ALARM CONTROL PANEL
STN DEBEG 8280 EMERGENCY ALARM CONTROL PANEL
STN DEBEG 8280 EMERGENCY ALARM CONTROL PANEL
STN DEBEG 8280 EMERGENCY ALARM CONTROL PANEL
STN SYSTEMTECHNIK FIM 402 PCB MODULE 271.132 254/B
STN SYSTEMTECHNIK FIM 402 PCB MODULE 271.132 254/B
STN SYSTEMTECHNIK NORD DRM401 DIGITAL RELAY MODULE
STN SYSTEMTECHNIK NORD DRM401 DIGITAL RELAY MODULE
STN SYSTEMTECHNIK NORD 401 DIESEL CONTROL MODULE
STN SYSTEMTECHNIK NORD 401 DIESEL CONTROL MODULE
STN SYSTEMTECHNIK NORD ZDM401 CENTRAL DIGITAL MODULE
STN SYSTEMTECHNIK NORD ZDM401 CENTRAL DIGITAL MODULE
STN SYSTEMTECHNIK NORD ZK 408 271.107 921 E PCB CARD 271.107 922/H6
STN SYSTEMTECHNIK NORD ZK 408 271.107 921 E PCB CARD 271.107 922/H6
STN SYSTEMTECHNIK NORD ZM401 CENTRAL MODULE
STN SYSTEMTECHNIK NORD ZM401 CENTRAL MODULE
STN ZM 410 CENTRAL MODULE 271.136 163 A
STN ZM 410 CENTRAL MODULE 271.136 163 A
STOCK 1-Z10867 SIGNAL CONVERTER BOARD A20581-F 1Z10867
STOCK 1-Z10867 SIGNAL CONVERTER BOARD A20581-F 1Z10867
STOCK 1-Z10874 CURRENT FEEDBACK CARD 1Z10874 A20592-B
STOCK 1-Z10874 CURRENT FEEDBACK CARD 1Z10874 A20592-B
STOCK A20581-E PRINTED CIRCUIT BOARD A20581E
STOCK A20581-E PRINTED CIRCUIT BOARD A20581E
STOCK A20581-E PRINTED CIRCUIT BOARD A20581E
STOCK A20581-E PRINTED CIRCUIT BOARD A20581E
STOCK EQUIPMENT 1D28672 CONTROL BOARD
STOCK EQUIPMENT 1D28672 CONTROL BOARD
STOCK EQUIPMENT 1D28672 CONTROL BOARD
STOCK EQUIPMENT 1D28672 CONTROL BOARD
STOCK EQUIPMENT 1Y5934 CIRCUIT BOARD A14811-A
STOCK EQUIPMENT 1Y5934 CIRCUIT BOARD A14811-A
STOCK EQUIPMENT 1Z10867 CONVERTER BOARD A20581-E
STOCK EQUIPMENT 1Z10867 CONVERTER BOARD A20581-E
STOCK EQUIPMENT 1-Z7946 CIRCUIT BOARD 1Z7946
STOCK EQUIPMENT 1-Z7946 CIRCUIT BOARD 1Z7946
STOCK EQUIPMENT 1Z8455 PC BOARD
STOCK EQUIPMENT 1Z8455 PC BOARD
STOCK EQUIPMENT 1Z8596 CIRCUIT BOARD A18414-0
STOCK EQUIPMENT 1Z8596 CIRCUIT BOARD A18414-0
STOCK EQUIPMENT 1Z8596 CIRCUIT BOARD A18414-0
STOCK EQUIPMENT 1Z8596 CIRCUIT BOARD A18414-0
STOCK EQUIPMENT 1Z9566 AMPLIFIER BOARD A19146-0
STOCK EQUIPMENT 1Z9566 AMPLIFIER BOARD A19146-0
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