福建中立恒自动化设备有限公司

1．输入/输出单元

输入/输出单元通常也称I/O单元或I/O模块，是PLC与工业生产现场之间的连接部件。

PLC通过输入接口可以检测被控对象的各种数据，以这些数据作为PLC对被控制对象进行控制的依据；同时PLC又通过输出接口将处理结果送给被控制对象，以实现控制目的。

由于外部输入设备和输出设备所需的信号电平是多种多样的，而PLC内部CPU的处理的信息只能是标准电平，所以I/O接口要实现这种转换。

I/O接口一般都具有光电隔离和滤波功能，以提高PLC的抗干扰能力。另外，I/O接口上通常还有状态指示，工作状况直观，便于维护。

PLC提供了多种操作电平和驱动能力的I/O接口，有各种各样功能的I/O接口供用户选用。I/O接口的主要类型有：数字量（开关量）输入、数字量（开关量）输出、模拟量输入、模拟量输出等。

常用的开关量输入接口按其使用的电源不同有三种类型：直流输入接口、交流输入接口和交/直流输入接口。

常用的开关量输出接口按输出开关器件不同有三种类型：是继电器输出、晶体管输出和双向晶闸管输出。

继电器输出接口可驱动交流或直流负载，但其响应时间长，动作频率低；而晶体管输出和双向晶闸管输出接口的响应速度快，动作频率高，但前者只能用于驱动直流负载，后者只能用于交流负载。

PLC的I/O接口所能接受的输入信号个数和输出信号个数称为PLC输入/输出（I/O）点数。I/O点数是选择PLC的重要依据之一。当系统的I/O点数不够时，可通过PLC的I/O扩展接口对系统进行扩展。

SIMTRONICS Feu  Gaz GD10P/GD10-P00-17DG-0XH-00

SIMTRONICS Fuoco  Gas GD10P/GD10-P00-17DG-0XH-00

NABCO MG-800 Reguladora Sistema Modelo MCG CONTROL IT MG800

NABCO MG-800 Gouvern

NABCO MG-800 Governatore Sistema Modello MCG CONTROL IT MG800 (Espressa

Siemens MP377 30.5cm Touch Pannello 6AV6 644-0AA01-2AX0

Siemens MP377 30.5cm Tactile Panneau 6AV6 644-0AA01-2AX0

Siemens MP377 30.5cm Toque Panel 6AV6 644-0AA01-2AX0

SIMTRONICS Feu  Gaz GD10P /

SIMTRONICS Fuoco  Gas GD10P /

SIMTRONICS Fuego  Gas GD10P /

Point Combustible Gas Detector IR2100-IIYA404202-1 Wuxi GLT Safety Equipment

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Point Combustible Gaz Détect

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Promax TV EXPLORER II (Accessories Shown In Photos Are Included

Promax TV Explorer II (Accessories Pictured Pin Photos Included

Promax TV Explorer II  (Accesorios Se Muestra En Fotos Are Incluido

Promax TV Explorer II (Accessories Shown Included

Krom Schroder VGBF 40F40-3 Gas Regolatore di Pressione

Krom Schroder VGBF 40F40-3 Gas Regulador de Presión

Krom Schroder VGBF 40F40-3 Gaz Régulat

Wuxi GLT Safety Equipment Point Combustible Gas Detector IR2100-IIYA404202-1

Gilmore Valve 1921072 Rev BShuttle valve AN990

Gilmore Valvola 1921072 Rev BShuttle Valvola AN990

Gilmore Valvule 1921072 Rev BNavette Valvule AN990

Gilmore Válvula 1921072 Rev BLanzadera Válvula AN990

Wuxi GLT Safety Equipment Point Flammable Gas Detector IR2100-II/YA404202-1

Wuxi GLT Safety Equipment Point Fuel Gas Detector IR2100-II/YA404202-1

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Hydac Art no 100903 Ventil Block DN50 DN25 4-fach G11/2 Art 100815 Typ 42/7/99

Hydac Art No 100903 Valve Block DN50 DN25 4 Way G11/2 100815 Type 42/7/99

Krom Schroder UVC1 D1G1A Flame Detector 100-230VAC 84320301

Allen Bradley 1794-IF8IH Isolated Analog Input/Hart Flex I/O

Georg Fischer Signet 32551P042 Type 2551 Magmeter Flow SensorORCA Flow sensor

Honeywell 51402755-100 HDW l KFW l LFW B K4LCN MEMORY PROCESSOR CARD

Hydac Arte Ness 100903 Ventil Blocco DN50 DN25 4-fach G11/2 100815 Typ 42/ 7/

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Hydac Arte No 100903 Ventil Bloque DN50 DN25 4-fach G11/2 100815 Typ 42/7/99

Krom Schröder UVC1 D1G1A Flame Detector 100-230VAC 84320301

Allen Bradley 1794-IF8IH Isolated Analog InputHard Flex I/O

Honeywell 51402755-100 Hdw L Kfw Lfw B K4LCN Memory Processor Card

Georg Fischer Signet 32551P042 Type 2551 Magmeter Flow SensorOrca For

Georg Fischer Signet 32551P042 Type 2551 Magmeter Flow SensorOrca

ARISTON TDU Tank Monitoring Surveyor Systems tdu REV 3 Display it

ARISTON TDU Tank Monitoring Surveyor Systems tdu REV 3.0 Display it

Ariston Tdu Tank Monitoring Surveyor System Tdu Rev 3 Display it

Ariston Tdu Tank Monitoring Surveyor System Tdu Rev 3.0 Display it

Krom Schroder UVC1 D1G1A Llama Detector 100-230VAC 84320301

Krom Schroder UVC1 D1G1A Fiamma Rilevatore 100-230VAC 84320301

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Allen Bradley 1794-IF8IH Isolé Analogique EntréeHart Flexible I/O

Allen Bradley 1794-IF8IH Isolato Analogico InputHart Flessibile I/O

Allen Bradley 1794-IF8IH Aislado Analógico EntradaHart Flexible I/O

Honeywell 51402755-100 Hdw L Kfw L Lfw B K4LCN Mémoire Process

Honeywell 51402755-100 Hdv L Kfw L Lfw B K4LCN Memoria Processore Scheda

Honeywell 51402755-100 Hdw L Kfw L Lfw B K4LCN Memoria Procesador Tarjeta

Georg Fischer Signet 32551P042 Tipo 2551 Magmeter Sensor de FlujoOrca De

Georg Fischer Signet 32551P042 Tipo 2551 Magmeter Flusso SensoreOrca Flusso

Georg Fischer Signet 32551P042 Type 2551 Magmeter Flux Capt

Georg Fischer Signet 32551P042 Tipo 2551 Magmeter Sensore di FlussoOrca

Georg Fischer Signet 32551P042 Tipo 2551 Magmeter Sensor de FlujoOrca

Allen Bradley 1794-IF8IH Isolated Analog Input/Hart Allen Bradley Flex I/O

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Système De Surveillance De Réservoir ARISTON TDU ité D'Affichage TDU REV 3.0

Paltronics Jackpot Controller System Part no XJPC-REV7-1L

Orbit Marine AL-7200-IMU-MK2

Honeywell 10313/1/1 FSC Termination Module

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ABB DSPC-170 Processor Module DSPC170 57310001-GL

Georg Fischer Signet 32551P042 Type 2551 Magmeter Flow Sensor

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51403519-160 Honeywell K4LCN-16 Memory Processor Card Honeywell 51403519-160

Georg Fischer Signet 32551T041 Type 2551 Magmeter Flow Sensor

Testo 6744 Dew Point Transmitter

SHINKO AVR GEC 3241

Georg Fischer Signet 32551T041 Type 2551 Magmeter Flow SensorORCA Flow sensor

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Beckhoff Automation AX5125-0000 3 Servo Drive (Kindly Checkered On Body

Paltronics Jackpot Control System P/N XJPC-REV7-1L

Testo 6744 Tau Point Transmitter

Georg Fischer Signet 32551T041 Type 2551 Magmeter Flow SensorOrca

Georg Fischer Signet 32551P042 Type 2551 Magmeter Continuous SensorOrca

Georg Fischer Signet 32551T041 Type 2551 Magmeter Flow SensorOrca For

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Paltronics Jackpot Contrôl

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Honeywell 10313/1/1 FSC Terminación Módulo

Honeywell FSC 10020/1/2 Cc Quad Processore Modulo Honeywell 3430326

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Baumer POG 10 DN 1000 I Incremental Codificatore IP 66 Hubner Berlino

Baumer POG 10DN 1000 I Incremental Codificador IP 66 Hubner Berlín

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ABB DSPC-170 Process

ABB DSPC-170 Procesador Módulo DSPC170 57310001-GL

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51403519-160 Honeywell K4LCN-16 Mémoire Process

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Georg Fischer Signet 32551P042 Tipo 2551 Magmeter Sensore di FlussoOrca Flow

Georg Fischer Signet 32551T041 Tipo 2551 Magmeter Sensore di FlussoOrca Flow

Georg Fischer Signet 32551T041 Type 2551 Magmeter Flux Capt

Georg Fischer Signet 32551T041 Tipo 2551 Magmeter Sensor de FlujoOrca Caudal

Georg Fischer Signet 32551P042 Type 2551 Magmeter Flow SensorOrca Flow

Georg Fischer Signet 32551T041 Tipo 2551 Magmeter Sensor de FlujoOrca De

Georg Fischer Signet 32551T041 Tipo 2551 Magmeter Flusso SensoreOrca Flusso

Georg Fischer Signet 32551T041 Tipo 2551 Magmeter Sensor de FlujoOrca

Georg Fischer Signet 32551T041 Tipo 2551 Magmeter Sensore di FlussoOrca

Georg Fischer Signet 32551P042 Tipo 2551 Magmeter Sensore di Flusso

Georg Fischer Signet 32551T041 Tipo 2551 Magmeter Sensore di Flusso

Georg Fischer Signet 32551P042 Tipo 2551 Magmeter Sensor de Flujo

Georg Fischer Signet 32551T041 Tipo 2551 Magmeter Sensor de Flujo

Georg Fischer Signet 32551T041 Type 2551 Magmeter Flux Capteur

Georg Fischer Signet 32551P042 Type 2551 Magmeter Flux Capteur

Orbit Marina AL-7200-IMU-MK2

Georg Fischer Signet 32551T041 Type 2551 Magmeter Through SensorOrca