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。
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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ABB ZGN.V1811.1 PCB BOARD 3N00990F000
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LIEBHERR 10351641 CAN MODULE AE16 KPSE
LIEBHERR 10351630 CAN MODULE DE KPSE
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LIEBHERR 10351549 CAN MODULE DE KPSE
LIEBHERR 10351645 CAN MODULE AE16 KPSE
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VACON 22kW/30HP AC DRIVE VACON0100-3L-0046-4-HVACEMC4
GAI-TRONICS 10959-203 AUDIO MESSENGER
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WOODWARD UG-8 8525-684 GOVERNOR 625-1425 RPM
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ABB FEH311-025P1D1W1Y0A1A0A1A4C1H2M5 FLOW METER
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VACON 18.5kW/25HP AC DRIVE VACON0100-3L-0038-4-HVACEMC4
WOODWARD UG-8L 8524 607 GOVERNOR 670-1290 RPM
GENERAL ELECTRIC 3FDV UAVX250LS FREQUENCY DRIVE
VACON NXP00615-A5T1SSV-A1A20000C2QGLMFL21ASSEQ015DPAP DRIVE
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ABB ZGN.V1U55.1 PCB CARD 3N639900000A
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ABB ZGN.V2Y09.1 PCB CARD VCA.S0112.0 REV.05
AXXON D-170HS CONTROLLER
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ABB REM545AG225AAAA Machine Terminal REM545
ABB REF543 Feeder Terminal REF543AM129AAAA
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MITSUBISHI ELECTRIC CBSUB1-Y PCB BOARD BQ217A251G51
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SHINKAWA VM-703B VIBRATION MONITORING SYSTEM CARD
SHINKAWA VM-721B VIBRATION MONITORING SYSTEM CARD
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YASKAWA CIMR-E7U42P2 VARISPEED E7 DRIVE 480V-5.3A
WOODWARD UG-8 8521-076 GOVERNOR 500-1400 RPM
KV3F20 GREEN POWER ELEVATOR DRIVE 477660G05
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TAMROTOR AIRCON L1 89525229 COMPRESSOR CONTROLLER ()
ABB ZGN.V2Q01.3 PCB BOARD VTA.V2Q01.3
ABB ACS800-04-0009-5C132J4002L502L503N685 DRIVE
VACON NXS00385A5T1SSVA1A2000000 DRIVE
ABB ZGN.V2P01.3 PCB BOARD
ABB ZGN.V3105.4 PCB BOARD VCA.V3105.4
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ALLEN-BRADLEY 1764-28BXB1 WITH MICROLOGIX 1500 1769-OW8I 1769-ECR
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VACON NXS00225A5T1SSVA1A2000000 DRIVE
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WOODWARD 8510-981 GOVERNOR
FANUC/TENNEX A97L-0201-0828 HEAT EXCHANGER FOR LAUTTING MACHINE
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HERNIS SCAN SYSTEM 400 COMPACT MATRIX HE400
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K-ARRAY DIGIMOD 2000HV REDLINE KMT18
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SIEMENS SICAM FRTU 6MD2520-0AA00-0AA0 POWER SUPPLY CARD
KAMEWA PRECIMA 1082 WATER JET CONTRO UNIT