AB 1756-ENBT/A 模块A 全新原装

AB 1756-ENBT/A 模块A 全新原装

AB 1756-ENBT/A 模块A 全新原装

AB 1756-ENBT/A 模块A 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。

INDUSTRIAL SBC,PC,IPC PCA-6178VE REV:B1 CPU 733MHZ COMPUTER WORKING

INDUSTRIAL SBC,PC,IPC PCA-6179L REV.A1 V3.20 PENTIUM III 1000 MHZ WORKING

INDUSTRIAL SBC,PC,IPC PCA-6186 A1,PCA-6186LV COMPUTER BOARD CPU 2.80GHZ WORKING

INDUSTRIAL SBC,PC,IPC PCA-6186 A1,PCA-6186VE COMPUTER BOARD V2.00 CPU 2.80GHZ

INDUSTRIAL SBC,PC,IPC PCA-6186 REV:B2,PCA-6186E2 COMPUTER TESTED WORKING #2

INDUSTRIAL SBC,PC,IPC PCA-6186E2 BIOS V2.00 CPU 2.80GHz TESTED WORKING

INDUSTRIAL SBC,PC,IPC PCA-6186VE BIOS V5.10 CPU 2.80GHZ COMPUTER BOARD WORKING

INDUSTRIAL SBC,PC,IPC PCA-6187 REV. A2 BIOS V2.08 COMPUTER BOARD TESTED WORKING

INDUSTRIAL SBC,PC,IPC PCA-6187 REV.A2 BIOS V2.08 COMPUTER BOARD WORKING #

INDUSTRIAL SBC,PC,IPC PCA-6187 REV.A2 BIOS V2.08 COMPUTER BOARD WORKING #2

INDUSTRIAL SBC,PC,IPC PCA-6194VG COMPUTER CPU 2.40GHZ BOARD WORKING

INDUSTRIAL SBC,PC,IPC PCE-5124G2,CPU 2.93 GHZ COMPUTER TESTED WORKING FREE SHIP

INDUSTRIAL SBC,PC,IPC PCIE-9450-R30 V2.6 CPU 2. 40GHZ COMPUTER BOARD WORKING

INDUSTRIAL SBC,PC,IPC PCISA-3716EV-6W,PCISA-3716E2V CPU 900MHZ COMPUTER WORKING

INDUSTRIAL SBC,PC,IPC PEAK 760VL2(LF) ,CPU 3.20GHZ COMPUTER TESTED WORKING

INDUSTRIAL SBC,PC,IPC PEAK715VL-HT,P-4,CPU 1.70 GHZ COMPUTER BOARD WORKING #1

INDUSTRIAL SBC,PC,IPC PEAK715VL-HT[D],P-4,CPU 1.70 GHZ COMPUTER BOARD WORKING #

INDUSTRIAL SBC,PC,IPC PEAK870VL2, BIOS Cy03 CPU 2.40 GHZ COMPUTER BOARD WORKING

INDUSTRIAL SBC,PC,IPC PEAK870VL2, BIOS R2.0a CPU 3.40 GHZ COMPUTER BOARD WORKING

INDUSTRIAL SBC,PC,IPC P-II SBC,P/N:620-G3A CELERON[TM] CPU AT 433MHZ WORKING

INDUSTRIAL SBC,PC,IPC P-II SBC,P/N:620-G3A CELERON[TM] CPU AT 466MHZ[66X7.0]

INDUSTRIAL SBC,PC,IPC P-II SBC,P/N:620-G3A CELERON[TM] CPU AT 600EMHZ [66x9.0]

INDUSTRIAL SBC,PC,IPC ROBO-608 COMPUTER BOARD CPU 500MHz TESTED WORKING FREE

INDUSTRIAL SBC,PC,IPC ROBO-8777VG2A CPU 2.80GHZ COMPUTER BOARD TESTED WORKING

INDUSTRIAL SBC,PC,IPC ROBO-8912VG2AR REV R1.20.W4 5.50MHZ COMPUTER BOARD WORK

INDUSTRIAL SBC,PC,IPC ROBO-8913VG2AR BOARD CPU 2.83GHz TESTED WORKING FREE

INDUSTRIAL SBC,PC,IPC ROCKY-4784EV ,CPU 2.80GHZ COMPUTER TESTED WORKING FREE

INDUSTRIAL SBC,PC,IPC ROCKY-4786EVG BIOS V1.2 CPU 3.00GHZ COMPUTER BOARD WORKING

INDUSTRIAL SBC,PC,IPC SBC81205 REV:A3-RC,CPU 2.40GHZ COMPUTER BOARD WORKING

INDUSTRIAL SBC,PC,IPC SBC8157 VER.A42.1F.0 CPU 2.33MHZ COMPUTER BOARD WORKING

INDUSTRIAL SBC,PC,IPC SBC8163 REV.A2 VER. A11.1F.0 CPU750MHZ COMPUTER BOARD WORK

INDUSTRIAL SBC,PC,IPC SBC81825 REV. A1 SBC81825VE E1.21 2.77GHz TESTED WORKING

INDUSTRIAL SBC,PC,IPC SBC-F757CVGL COMPUTER P-4 CPU 2.40GHZ BOARD WORKING

INDUSTRIAL SBC,PC,IPC TEXAS C486/25,706-A-13291 COMPUTER BOARD TESTED WORKING

INDUSTRIAL SBC,PC,IPC WSB-Q354 ,CPU 2.66GHZ COMPUTER TESTED WORKING FREE

INDUSTRIAL SBC,PC,IPC WSB-Q354-R10 V1.0,CPU 2.66GHZ COMPUTER TESTED WORKING

INDUSTRIAL SBC,PC,IPC, INTEL CELERON 566 HAGIWARA HPU6800PIC-566 TESTED WORKING

INDUSTRIAL SBC,PC,IPC, PCA-6178B REV.B1 V2.01 PCA-6178VE COMPUTER BOARD WORKING

INDUSTRIAL SBC,PC,IPC,1300-00-01 CPU COMPUTER BOARD WORKING

INDUSTRIAL SBC,PC,IPC,586LCD/S,UM82C498,CPU:95.74MHZ,BIOS V1.52 WORKING

INDUSTRIAL SBC,PC,IPC,586LCD/S,UM82C498,CPU:95.96MHZ,BIOS V1.52 WORKING

INDUSTRIAL SBC,PC,IPC,ACF-628VL COMPUTER BOARD,INTEL PENTIUM III WORKING #11

INDUSTRIAL SBC,PC,IPC,ADLINK NUPRO-840 COMPUTER BOARD,#2

INDUSTRIAL SBC,PC,IPC,ADVANTECH PCA-6028VG REV.A1 BIOS V2.00 COMPUTER BOARD WORK

INDUSTRIAL SBC,PC,IPC,ADVANTECH PCA-6155V,COMPUTERBOARD P-MMX,CPU 233MHZ WORKING

INDUSTRIAL SBC,PC,IPC,Advantech PCA-6178B COMPUTER BOARD,PENTIUM-III CPU #9

INDUSTRIAL SBC,PC,IPC,ADVANTECH PCA-6194 A1,CPU 2.40GHZ COMPUTER WORKING

INDUSTRIAL SBC,PC,IPC,CONTEC GPI-8451-LA 2.80GHZ CPU BOARD WORKING FREE SHIP

INDUSTRIAL SBC,PC,IPC,CONTEC PC-686C [PC] H-LV 7654A,INTEL PENTIUM III 700MHZ

INDUSTRIAL SBC,PC,IPC,DUX 2001-507B BOARD INTEL CELERON TM 733MHZ[66X11.0] WORK

INDUSTRIAL SBC,PC,IPC,FS-97B CPU 3.00GHZ COMPUTER BOARD WORKING #1

INDUSTRIAL SBC,PC,IPC,HiCORE-i6420VLG CPU 3.20GHZ COMPUTER BOARD WORKING

INDUSTRIAL SBC,PC,IPC,IB840, 3.20GHZ CPU BOARD WORKING FREE SHIP

INDUSTRIAL SBC,PC,IPC,IB865-R,IB865-Q2-CP1A-0218,3.20GHZ WORKING FREE SHIP

INDUSTRIAL SBC,PC,IPC,IB865-R,IB865-Q2-CP1A-0218,INTEL[R],P-[R] 4 CPU 3.20GHZ

INDUSTRIAL SBC,PC,IPC,iBASE IB720,IB720-I1A-C1A-0927,PENTIUM III CPU AT 850MHZ

INDUSTRIAL SBC,PC,IPC,IBASE IB800-16,IB800-G2-1106 P-4,CPU:1.60GHZ WORKING

INDUSTRIAL SBC,PC,IPC,INTEL PENTIUM-4 CPU,FSB-860B BIOS COMPUTER BOARD WORKING

INDUSTRIAL SBC,PC,IPC,IP-4PGP23 COMPUTER BOARD,INTEL PENTIUM 4 CPU WORKING #15

INDUSTRIAL SBC,PC,IPC,IP-4PGP23A CPU 2.26GHZ COMPUTER BOARD WORKING

INDUSTRIAL SBC,PC,IPC,MITAC MSC-3685A,COMPUTER BOARD,INTEL,P-III 1.0B GHZ TESTED

INDUSTRIAL SBC,PC,IPC,NEAT-575 CPU 233MHZ BOARD WORKING FREE SHIP

INDUSTRIAL SBC,PC,IPC,NEAT-590,TILLAMOOK-MMX CPU AT 266MHZ COMPUTER BOARD TESTED

INDUSTRIAL SBC,PC,IPC,PCA-6003 REV.A1 V1.15 CPU 1.0BGHZ BOARD TESTED WORKING

INDUSTRIAL SBC,PC,IPC,PCA-6010,AK0-PCA-6010[A], CPU 2.92GHZ BOARD TESTED WORKING

INDUSTRIAL SBC,PC,IPC,PCA-6010VG A1,CPU 2.92GHZ CPU BOARD WORKING FREE SHIP

INDUSTRIAL SBC,PC,IPC,PCA-6155V,COMPUTER BOARD P-MMX,CPU:2.33MHZ WORKING ##

INDUSTRIAL SBC,PC,IPC,PCA-6159 REV:A1,PCA-6159L COMPUTER BOARD WORKING

INDUSTRIAL SBC,PC,IPC,PCA-6178 REV A1 BOARD PENTIUM III CPU AT 700MHZ[100X7.0]

INDUSTRIAL SBC,PC,IPC,PCA-6178,REV:A1,P-III CPU 850MHZ TESTED WORKING

INDUSTRIAL SBC,PC,IPC,PCA-6178L,REV:B1,PCA-6178B P-III CPU:850MHZ WORKING

INDUSTRIAL SBC,PC,IPC,PCA-6179L P-III CPU 1000MHZ COMPUTER BOARD WORKING #1

INDUSTRIAL SBC,PC,IPC,PCA-6179VE,COMPUTER P-III,CPU:1000MHZ,V3.20 WORKING

INDUSTRIAL SBC,PC,IPC,PCA-6179VE,PENTIUM III,CPU:1000MHZ,V3.13 WORKING

INDUSTRIAL SBC,PC,IPC,PCA-6186 B2,PCA-6186E2,COMPUTER P-4,CPU:2.00GHZ WORKING

INDUSTRIAL SBC,PC,IPC,PCA-6186 REV:B2,CPU 2.80GHZ TESTED WORKING

INDUSTRIAL SBC,PC,IPC,PCA-6186E2 COMPUTER CPU 2.40GHZ BOARD WORKING

INDUSTRIAL SBC,PC,IPC,PCA-6186E2 REV:B2 CPU 2.80GHZ COMPUTER BOARD WORKING #1

INDUSTRIAL SBC,PC,IPC,PCA-6186E2,B2 CPU 2.80GHZ V5.10 TESTED WORKING FREE SHIP

INDUSTRIAL SBC,PC,IPC,PCA-6186VE COMPUTER CPU 2.66GHZ BOARD WORKING

INDUSTRIAL SBC,PC,IPC,PCA-6186VE, 2.40GHZ CPU BOARD WORKING FREE SHIP

INDUSTRIAL SBC,PC,IPC,PCA-6186VE,REV:B2,CPU 2.40GHZ WORKING

INDUSTRIAL SBC,PC,IPC,PCA-6187 REV A2,COMPUTER BOARD,CPU 2.66GHZ WORKING

INDUSTRIAL SBC,PC,IPC,PCA-6194G2 REV:A1,CPU 2.13GHZ COMPUTER TESTED WORKING

INDUSTRIAL SBC,PC,IPC,PCA-6194VG TESTED WORKING

INDUSTRIAL SBC,PC,IPC,PCA-6194VG V1.26,2.40GHZ CPU BOARD WORKING FREE SHIP#3

INDUSTRIAL SBC,PC,IPC,PCI-6771 REV:B3,COMPUTER BOARD P-III,CPU:750MHZ WORKING

AB 1756-ENBT/A 模块A 全新原装