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。
TERASAKI ESM-105E STARTER MODULE PCB CARD K/87Z/6-001C
TERASAKI ESZ-107 DIODE MODULE K/782/11-001A
TERASAKI ESZ-107 DIODE MODULE K/782/11-001A
TERASAKI ESZ-161 DIODE MODULE PCB CARD K/782/11-001A
TERASAKI ESZ-161 DIODE MODULE PCB CARD K/782/11-001A
TERASAKI ESZ-161 DIODE MODULE PCB CARD K/782/11-001A
TERASAKI ESZ-161 DIODE MODULE PCB CARD K/782/11-001A
TERASAKI LTX-8001 TTL/RS-422 MODULE PCB CARD L/91Z/11-001
TERASAKI LTX-8001 TTL/RS-422 MODULE PCB CARD L/91Z/11-001
TERASAKI LTX-8001 TTL/RS-422 MODULE PCB CARD L/91Z/11-001
TERASAKI LTX-8001 TTL/RS-422 MODULE PCB CARD L/91Z/11-001
TERASAKI NESM-103L STARTER MODULE PCB CARD K/16Z/4-001A
TERASAKI NESM-103L STARTER MODULE PCB CARD K/16Z/4-001A
TERASAKI PCB CARD K/751/111-002 ERC-311 / FAST SHIP DHL OR FEDEX
TERASAKI PCB CARD K/751/111-002 ERC-311 / FAST SHIP DHL OR FEDEX
TERASAKI PCB F/BATTERY CHARGING & DISCHARGING BOARD P029 / FAST SHIP
TERASAKI PCB F/BATTERY CHARGING & DISCHARGING BOARD P029 / FAST SHIP
TERASAKI PCB F/BATTERY CHARGING & DISCHARGING BOARD P029 / FAST SHIP
TERASAKI PCB F/BATTERY CHARGING & DISCHARGING BOARD P029 / FAST SHIP
TERASAKI PCB PRINT CARDC / FAST SHIP DHL OR FEDEX
TERASAKI PCB PRINT CARDC / FAST SHIP DHL OR FEDEX
TERASAKI PCB PRINT CARDC / FAST SHIP DHL OR FEDEX
TERASAKI PCB PRINT CARDC / FAST SHIP DHL OR FEDEX
TERASAKI STARTER MODULE PCB ES-I02 K/87Z/3-001C / FAST SHIP DHL OR FEDEX
TERASAKI STARTER MODULE PCB ES-I02 K/87Z/3-001C / FAST SHIP DHL OR FEDEX
TERASAKI STARTER MODULE PCB ESM-103 K/87Z/4-001C / FAST SHIP DHL OR FEDEX
TERASAKI STARTER MODULE PCB ESM-103 K/87Z/4-001C / FAST SHIP DHL OR FEDEX
TEXAS INSTRUMENTS 2207065-0001 PC BOARD DIAGRAM NO. 2207067 22070650001
TEXAS INSTRUMENTS 2207065-0001 PC BOARD DIAGRAM NO. 2207067 22070650001
TEXAS INSTRUMENTS 2207065-0001 PC BOARD DIAGRAM NO. 2207067 22070650001
TEXAS INSTRUMENTS 2207065-0001 PC BOARD DIAGRAM NO. 2207067 22070650001
TEXAS INSTRUMENTS 2222357-0001 PC BOARD 22223570001 XU29 2222358-0001
TEXAS INSTRUMENTS 2222357-0001 PC BOARD 22223570001 XU29 2222358-0001
TEXAS INSTRUMENTS 2222371-0001 DISPLAY DRIVER BOARD 22223710001
TEXAS INSTRUMENTS 2222371-0001 DISPLAY DRIVER BOARD 22223710001
TEXAS INSTRUMENTS 2222371-0001 DISPLAY DRIVER BOARD 22223710001, REPAIRED
TEXAS INSTRUMENTS 2222371-0001 DISPLAY DRIVER BOARD 22223710001, REPAIRED
TEXAS INSTRUMENTS 2222371-0001 DISPLAY DRIVER BOARD 22223710001, REPAIRED
TEXAS INSTRUMENTS 2222371-0001 DISPLAY DRIVER BOARD 22223710001, REPAIRED
TEXAS INSTRUMENTS 2275977-0001 DISPLAY DRIVER BOARD 2279770001
TEXAS INSTRUMENTS 2275977-0001 DISPLAY DRIVER BOARD 2279770001
TEXAS INSTRUMENTS 2275977-0001 DISPLAY DRIVER BOARD 2279770001
TEXAS INSTRUMENTS 2275977-0001 DISPLAY DRIVER BOARD 2279770001
TEXAS INSTRUMENTS 2275977-0001 DISPLAY DRIVER BOARD 2279770001
TEXAS INSTRUMENTS 2275977-0001 DISPLAY DRIVER BOARD 2279770001
TEXAS INSTRUMENTS A16430 DIGITAL OUTPUT BOARD
TEXAS INSTRUMENTS A16430 DIGITAL OUTPUT BOARD
TEXAS INSTRUMENTS A16430 DIGITAL OUTPUT BOARD
TEXAS INSTRUMENTS A16430 DIGITAL OUTPUT BOARD
TEXAS INSTRUMENTS A16451 ANALOG OUTPUT BOARD REV. C
TEXAS INSTRUMENTS A16451 ANALOG OUTPUT BOARD REV. C
TEXAS INSTRUMENTS A16515-0-0 CIRCUIT BOARD REV.D A1651500
TEXAS INSTRUMENTS A16515-0-0 CIRCUIT BOARD REV.D A1651500
THAI LIN TL39U-009-0555 UI ENCAPSULATED TRANSFORMER ATTACH WITH PCB CARD
THAI LIN TL39U-009-0555 UI ENCAPSULATED TRANSFORMER ATTACH WITH PCB CARD
THAI LIN TL39U-009-0555 UI ENCAPSULATED TRANSFORMER ATTACH WITH PCB CARD
THAI LIN TL39U-009-0555 UI ENCAPSULATED TRANSFORMER ATTACH WITH PCB CARD
THAYER SCALE D-32912D TRANSMITTER BOARD D32912D
THAYER SCALE D-32912D TRANSMITTER BOARD D32912D
THAYER SCALE D-32912D TRANSMITTER BOARD DLST D-32912D D32912D
THAYER SCALE D-32912D TRANSMITTER BOARD DLST D-32912D D32912D
THAYER SCALE D-32912E TRANSMITTER BOARD D32912E
THAYER SCALE D-32912E TRANSMITTER BOARD D32912E
THAYER SCALE PI-164 PC BOARD D-35833-K PI164
THAYER SCALE PI-164 PC BOARD D-35833-K PI164
THAYER SCALE PI-164 PC BOARD D-35833-K PI164
THAYER SCALE PI-164 PC BOARD D-35833-K PI164
THERMAL DYNAMICS 19X1109 CIRCUIT BOARD 114X196
THERMAL DYNAMICS 19X1109 CIRCUIT BOARD 114X196
THERMAL DYNAMICS 19X1109 CIRCUIT BOARD 114X196
THERMAL DYNAMICS 19X1109 CIRCUIT BOARD 114X196
THERMO 9988-DWG-42P319 9989-DWG-42P728 INPUT BOARD 9988DWG42P319
THERMO 9988-DWG-42P319 9989-DWG-42P728 INPUT BOARD 9988DWG42P319
THERMO ELECTRIC 42-0 PC BOARD REV.D 420
THERMO ELECTRIC 42-0 PC BOARD REV.D 420
THERMO ELECTRON 102339-00 FRONT PANEL BOARD 10233900
THERMO ELECTRON 102339-00 FRONT PANEL BOARD 10233900
THERMO ENVIROMENTAL D/A 42-2 CIRCUIT BOARD 422 REPAIRED
THERMO ENVIROMENTAL D/A 42-2 CIRCUIT BOARD 422 REPAIRED
THERMO ENVIRONMENTAL 43A/B-6 TEMPERATURE CONTROL BOARD 43AB6
THERMO ENVIRONMENTAL 43A/B-6 TEMPERATURE CONTROL BOARD 43AB6
THERMO ENVIRONMENTAL 43B-12 INPUT BOARD 43B12
THERMO ENVIRONMENTAL 43B-12 INPUT BOARD 43B12
THERMO ENVIRONMENTAL 49-4 PROCESSOR BOARD 494
THERMO ENVIRONMENTAL 49-4 PROCESSOR BOARD 494
THERMO ENVIRONMENTAL 57P314 COUNTER ANALYZER CIRCUIT BOARD
THERMO ENVIRONMENTAL 57P314 COUNTER ANALYZER CIRCUIT BOARD
THERMO ENVIRONMENTAL 57P315 D/A CIRCUIT BOARD
THERMO ENVIRONMENTAL 57P315 D/A CIRCUIT BOARD
THERMO ENVIRONMENTAL 7366 POWER SUPPLY BOARD 45P303 48-9 FOR CO2 ANALYZER
THERMO ENVIRONMENTAL 7366 POWER SUPPLY BOARD 45P303 48-9 FOR CO2 ANALYZER
THERMO ENVIRONMENTAL 7366 POWER SUPPLY BOARD 45P303 48-9 FOR CO2 ANALYZER
THERMO ENVIRONMENTAL 7366 POWER SUPPLY BOARD 45P303 48-9 FOR CO2 ANALYZER
THERMO ENVIRONMENTAL 7366 POWER SUPPLY BOARD 45P303 48-9 FOR CO2 ANALYZER
THERMO ENVIRONMENTAL 7366 POWER SUPPLY BOARD 45P303 48-9 FOR CO2 ANALYZER
THERMO ENVIRONMENTAL 9287 42-12 TEMPERATURE CONTROL BOARD
THERMO ENVIRONMENTAL 9287 42-12 TEMPERATURE CONTROL BOARD
THERMO ENVIRONMENTAL 9578 PROCESSOR BOARD 42/43B/49-4 REV.B
THERMO ENVIRONMENTAL 9578 PROCESSOR BOARD 42/43B/49-4 REV.B
THERMO ENVIRONMENTAL 9578 PROCESSOR BOARD 42/43B/49-4 REV.B
THERMO ENVIRONMENTAL 9578 PROCESSOR BOARD 42/43B/49-4 REV.B
THERMO ENVIRONMENTAL 9578 PROCESSOR BOARD 42/43B/49-4 REV.B
THERMO ENVIRONMENTAL 9578 PROCESSOR BOARD 42/43B/49-4 REV.B
THERMO ENVIRONMENTAL DISPLAY 42/43B/48/49-1 REV. A CIRCUIT BOARD
THERMO ENVIRONMENTAL DISPLAY 42/43B/48/49-1 REV. A CIRCUIT BOARD
THERMO ENVIRONMENTAL DISPLAY 42/43B/48/49-1 REV. A CIRCUIT BOARD
THERMO ENVIRONMENTAL DISPLAY 42/43B/48/49-1 REV. A CIRCUIT BOARD
THERMO ENVIRONMENTAL DWG 64P309 9289 REV. E CIRCUIT BOARD DWG64P309
THERMO ENVIRONMENTAL DWG 64P309 9289 REV. E CIRCUIT BOARD DWG64P309
THERMO KING 20234-67 CIRCUIT BOARD PE8-1 2023467
THERMO KING 20234-67 CIRCUIT BOARD PE8-1 2023467
THERMO KING 20234-67 CIRCUIT BOARD PE8-1 2023467
THERMO KING 20234-67 CIRCUIT BOARD PE8-1 2023467
THERMO KING K31-00783 TIMER BOARD K3100783
THERMO KING K31-00783 TIMER BOARD K3100783
THERMO KING K31-00783 TIMER BOARD K3100783
THERMO KING K31-00783 TIMER BOARD K3100783
THERMO RAMSEY C07349K-E111 DISPLAY BOARD AC4000I, 067090
THERMO RAMSEY C07349K-E111 DISPLAY BOARD AC4000I, 067090
THERMO SCIENTIFIC 100855-00 TEMPERATURE CONTROL BOARD 10085500
THERMO SCIENTIFIC 100855-00 TEMPERATURE CONTROL BOARD 10085500
THERMO SCIENTIFIC 100855-00 TEMPERATURE CONTROL BOARD 10085500
THERMO SCIENTIFIC 100855-00 TEMPERATURE CONTROL BOARD 10085500
THERMO SCIENTIFIC 100855-00 TEMPERATURE CONTROL BOARD 10085500
THERMO SCIENTIFIC 100855-00 TEMPERATURE CONTROL BOARD 10085500
THERMO SCIENTIFIC 100855-00 TEMPERATURE CONTROL BOARD 10085500
THERMO SCIENTIFIC 100855-00 TEMPERATURE CONTROL BOARD 10085500
THERMO SCIENTIFIC 9946 OZONATOR DRIVER BOARD
THERMO SCIENTIFIC 9946 OZONATOR DRIVER BOARD
THOMAS ENGINEERING TTS-15699C CIRCUIT BOARD TTS15699C PC-100
THOMAS ENGINEERING TTS-15699C CIRCUIT BOARD TTS15699C PC-100
THORN 125-065-758 ALXM PCB CARD 125-485-850
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