1492-SP3D100板卡船舶半导体工控备件优势经销

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；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，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。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。

2．通信接口

PLC配有各种通信接口，这些通信接口一般都带有通信处理器。

PLC通过这些通信接口可与监视器、打印机、其它PLC、计算机等设备实现通信。

PLC与打印机连接，可将过程信息、系统参数等输出打印；与监视器连接，可将控制过程图像显示出来；与其它PLC连接，可组成多机系统或连成网络，实现更大规模控制。

与计算机连接，可组成多级分布式控制系统，实现控制与管理相结合。远程I/O系统也必须配备相应的通信接口模块。

3．智能接口模块

智能接口模块是一独立的计算机系统，它有自己的CPU、系统程序、存储器以及与PLC系统总线相连的接口。

它作为PLC系统的一个模块，通过总线与PLC相连，进行数据交换，并在PLC的协调管理下独立地进行工作。

PLC的智能接口模块种类很多，如：高速计数模块、闭环控制模块、运动控制模块、中断控制模块等。

以下链接皆有货

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Lister Petter 657-34251 Joint Set LPW/S3

Lister Petter 751-41350 Injector 75141350

Lithonia Lighting ELP U397 PCB ELPU397 EMAE001785 EMEPB00092 Rev D

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LS 6610076 Printed Circuit Board 0002-555.07.00.004-0

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LS GMC-32 Contator With LS GTH-40 Thermal Overload Relay LS GMC(D)-32 Ith 50A Ui

LS LIEBHERR 6610117 Printed Circuit Board 0002.555.12.00.121-2

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M SYSTEM AS4R-5-M2 RTD ALA

M System KWRS-3AA-R RTD Transmitter K-Unit Signal Conditioner Input Pt 100-50-50

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MAC 56C-13-611CA Solenoid Valve 25 TO 150 Psi With MAC 130B-611CAAA

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MAC MV-A2B-A211-PM-611CA Solenoid EXT/RET Valve With MAC PME-611CA

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Macro Sensor PR 812 1000-0135 LVDT Transmitter 009.6219-002 300

Macro Sensors 009 6219-002 Sensor / PR 812 1000-0135 / 089-7827-001

MADISON M4190 Liquid Level Switch 1 Inch Npt Spdt 304 Stainless Steel 1 2ZY84

Madison M4190 Selectable Tank Liquid Level Switch

Magellan A 02 P0100752/R HF/MF DGPS Receiver

Magellan T

Magnatrol 18A25W Water Solenoid Valve 120V 60Hz 25Watts 50PSI

Magnatrol Valve 18A25H Hot Water Solenoid Valve 120V 60Hz 25Watts 50PSI

MAGNATROL VALVE 18A42B PSI-110 18A 42B

Magnatrol Valve 18A44B Sea Water Solenoid Valve 120V 60Hz 25W

Magnatrol Valve 18N42B Sea Water Solenoid Valve 120V 50/60Hz 25W

Magnatrol Valve 35S26 Steam Solenoid Valve 120V 60HZ 45Watts 50 PSI 1 ½

Magnecraft 782XBXM4L Control Relay Kit Led 24 Vac Voltage 6 Pcs / Lot

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MAGNETRON VALVE 18A44B SEA WATER 110-PSI 120V 60Hz 25W 18A 44B

Magnetstromregler HA 0097-MS Solenoid Contr Valve Regulator

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Maituo 4-Port Video Splitter 350MHz NTI VOPEX-C5VA-4C-E

MAK 9.01.6-91.23.01-01a Speed Card Module 9.01.7-91.21.00-06

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Maker MOD3SHUNT Traction Motor Heater

Makita 4350FCT Orbital Action Jigsaw Max 135nm 220-240V~ 3.3A 50Hz 720W N 800-28

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Malema Sensor M-VF-B61-0000-004 Velocity Fuse Safety Excess Flow Valve

MALEMA SENSORS H-200X-S43-014 ADJUSTABLE FLOW SWITCH EXPLOSION PROOF

Malling Kontrol 9710.00 Input Card 122880

MAN 1641982-1 Temperature Sensor 10 W 14

Man B&W 14.0330.0 PCB Terminal Box 0121E

Man B&W 90701-13K 1-REP Repair Kit 9070113K1REP

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mar PT-24-20CE Battery Charger 445-3752-0 Rev K Phase Three Three Stage Smart

MAR PT-24-20CE Three Stage Smart Charger Phase Three

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Marathon 4076055 Printed Circuit Card Assembly 407-6055-04 Polarity Assembly

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Marathon G128 Motor BQN 56T17D5333B P 50-60Hz 190/380-415V 208-230/460V

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Marathon GT1204 Motor V F 145TTFR6058AA K Three Phase Globetrotter Motor

Marathon QJ 56T17D5689E K Motor Alliance M412519P /3HP 3PH QJ56T17D5689EK

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MARIMATECH SLP-75 Load Cell Umax: 10Vdc pmax: 2W

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Markload DX 5200-005AA 110-220VAC F5200-005AA Mod Display Control OS-435HD Crane

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