AB 1756-EN2TSC 模块 全新原装

AB 1756-EN2TSC 模块 全新原装

AB 1756-EN2TSC 模块 全新原装

AB 1756-EN2TSC 模块 全新原装

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。

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。

HP 743 BOARD,A2636-66013 REV B,A2636-66008 REV A

HP AGILENT E8491B,HP 75000 SERIES C IEEE-1394 PC LINK TO VXI WORKING

HP ASSY 82335-6001 REV F BD 82335-80001 INTERFACE CARD

HP BOARD 54602-66502 REV A

HP E1330B QUAD 8-BIT DIGITAL I/O HP 75000 SERIES C E1403C

HP HEWLETT PACKARD 10780C RECEIVER, 10780B RECEIVER

HP RAD BOARD 01018-66503 D 3001

HPC1644 PRT3052 PCB BOARD

HPC1644,PRT3052-0-C PCB BOARD

HP-DDA4 F50076-1 BOARD TESTED WORKING FREE SHIP

HPI-14OC TPB-S VP-810/122 BOARD

HPS 421 COLD CATHODE GAUGE MICRO-CONTROLLER & CABLE FREE SHIP

HPS 421 COLD CATHODE GAUGE MICRO-CONTROLLER FREE SHIP

HSC HI-SYSTEM CONTROL HIMV-605A DI/0IIA BOARD

HUBA CONTROL TYPE 604 LOT OF 3 WITH INSTALLATION PLATE

HUGLE ELECTRONICS IONIZER 301

HUGLE ELECTRONICS IONIZER 301 #1

HUGLE ELECTRONICS IONIZER 411

HUGLE ELECTRONICS, IONIZER 411N1-2 W/GUN WORKING

HUGLE ELECTRONICS,IONIZER STATIC MEASURER,METER 750

HUMPHREY HA040E1-PSL AIR VALVE

HUNTINGTON TURBO THROTTLE VALVE A00-1549 WORKING FREE SHIP

HUNTINGTON TURBO THROTTLE VALVE A00-1549 WORKING NO RUBBER O RING FREE SHIP

HUNTINGTON TURBO THROTTLE VALVE A00-1549,PBF-400 WORKING FREE SHIP

HUNTINGTON TURBO THROTTLE VALVE A00-1549,REV:D WORKING FREE SHIP

HUNTINGTON TURBO THROTTLE VALVE A00-1549,WORKING FREE SHIP #1

HUNTINGTON TURBO THROTTLE VALVE A00-1549,WORKING FREE SHIP #2

HUTTINGER DC-GENERATOR PFG 10000DC 10000W TESTED WORKING FREE SHIP

HUTTINGER PFG 5000 RF BOARD FHF C 40-1101-01.02,0123601V03 TESTED WORKING

HUTTINGER PFG 5000 RF CPU BOARD V4.14,0463733V11,0463891V03,0463893V03 WORKING

HY-LOK VALVE P2VH-6T 3000PSI 316 0OQ LOT OF 4

HY-LOK VALVE P2VH-6T 3000PSI 316 C3I LOT OF 5

HY-LOK VALVE P2VH-6T 3000PSI 316 OOQ LOT OF 6

HY-LOK VALVE P2VH-6T 3000PSI 316,04M LOT OF 5

HYOJINCONTEC PALA PC PALA-D64M TOUCH SCREEN WORKING

I.O DATA DEVICE GA-DVL2-3 BOARD

I/O BOARD P/N 171-0540

IAI ACTUATOR CONTROLLER SCON-C-60A-NP-2-2 FOR IF-SA2R-A-60-700-T2-X07 #1

IAI CAMERA CV-A11,4X65 WORKING

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IAI CORP SEL CONTROLLER MODEL SEL-GS-3-AC-200.200. 100B-2 SUPER-SEL-3

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IAI SSEL DRIVER SSEL-C-2-60I-30DI-NP-2-2

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IAI X-SEL CONTROLLER XSEL-K-2-60AB-60AB-CC-EEE-0-2,SUPER-SEL-2

IBM 36H6207B T1Z3558C 04 BOARD

IBM 36H6207D T262208C BOARD

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IBM 36H6388 BOARD

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IBM DESKTOP COMPUTER TYPE 8570 ANO9SA8570-C TESTED WORKING FREE SHIP

IC CORPORATION PSI-400a BOARD,2015B9101B DT-HV

ICOS N.V.PCB605/2/0 BOARD MVS605/2/0/0

IDAM NT02C08EF4 BOARD

IDAM SM2502K DT120X56 DRIVE

IDAM SM2502K FSM180X60 DRIVE

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IKO LRXD15 LINEAR BEARINGS & RAILS 220mm

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ILFA CONVAC CCPU2A.1 BOARD

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INDRAMAT DKC02.1-040-7-FW DRIVE FWA-ECODRV-SSE-03VRS-MS

Indramat Drive DKC11.3-100-7-FW TESTED WORKING

INDRAMAT DSS 2.1 109-0852-4A01-04 109-0852-4B01-04 BOARD