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。

ENERCON LM2209SD1241 CONTROL BOARD

ENERCON LM4246-01 FD5660-01 CIRCUIT BOARD

ENERCON LM4823-06 CIRCUIT BOARD

ENERCON SD1682-01, FD4413-01, LM3414-01 CIRCUIT BOARD

ENERCON SD1752-01 , FD4916-01 , LM3762-01 CIRCUIT BOARD

ENERGYLINE 500-0120 REV. C PC BOARD

Enersy1060-12-EQ3-2 Pcb Circuit Board Rev J

ENKEL 012-03287 HOIST DRIVER BOARD

ENKEL 013-02233 ACCEL BOARD

ENKEL C12-11396 SPLICE BOARD

ENKEL CORP. 012-02236 PC BOARD

ENTEK IRD ASM34294-06 CARD MODULE

ENTERPRISE SYSTEMS 901857 CIRCUIT BOARD

ENTRON CONTROLS 400011-K CONTROL BOARD

En-tronic ZG5-280-296A Rev 1 Pcb Circuit Board

En-tronic ZG5-280-296B Pcb Circuit Board Rev 1

ENVIRONMENTAL ELEM UNDERVOLTAGE BOARD PC0410

ENVIRONMENTAL ELEMENTS CORP. ALARM INTERFACE CARD PB0795

ENVIRONMENTAL ELEMENTS CORP. SIGNAL CARD PB0793

Environmental Elements PD0855 Pcb Circuit Board Rev 0

EPH296C Pcb Circuit Board Assembly

EPI 3087200 PACKAGING CONTROL BOARD

Epson C12C824431 Type B Serial I/f No Buffer Interface Card

Epson R12NZ900A6 Profinet Slave Board

Erdco CG-14671 Series 34 Pcb Circuit Board

ERHARDT & LEIMER 025511 CIRCUIT BOARD

ERHARDT & LEIMER 025645 PCB BOARD

ERHARDT & LEIMER 201778 AMPLIFIER BOARD

ERHARDT & LEIMER AK0401 AMPLIFIER BOARD

ERHARDT & LEIMER NK1301 MAIN CIRCUIT BOARD

ERHARDT & LEIMER NK-1301 MAIN CIRCUIT BOARD

ERHARDT & LEIMER NK1401 CIRCUIT BOARD

ERHARDT & LEIMER RK1101 PCB BOARD

ERHARDT & LEIMER VK-1521 AMPLIFIER BOARD

ERHARDT & LEIMER VK2110 CIRCUIT BOARD

Erhardt Leimer RK1002A Pcb Circuit Board

ERIEZ MAGNETICS 814861 CONTROL BOARD

ERIEZ MAGNETICS 816237 CIRCUIT BOARD

ERNI PRINTED CIRCUIT BOARD POLAR 015364 NZ

ERNI PRINTED CIRCUIT BOARD POLAR 015615 N-CPU

ERNI PRINTED CIRCUIT BOARD POLAR 015686 N-MS

ERNI PRINTED CIRCUIT BOARD POLAR 015711 N-KB

ESAB L-TEC PHASE CONTROL BOARD 675312

ESAB-HEATH PC 331-014-609 CIRCUIT BOARD

ESD GMBH PCI331 CIRCUIT BOARD

ESTELEC BOARD 8805/1

ETAMIC E 413906 CIRCUIT BOARD

ETAMIC E430714-2/4 CIRCUIT BOARD

Etas ES1000.2 Syko Regenerator Board 6-34v 13.3v 10a

Etas ES1120.1E ES1130.1E F 00K 001 339 E Pcb Circuit Board

Etas ES1231.1-A Interface Board

Etas ES1310.1 D/a Pcb Circuit Board

ETI MICRO DIN-100 DIGITAL INPUT BOARD

ETI-MICRO ILA/IHA-100/520-62806 BOARD

EU-01094V-0 LY-41565-7 Pcb Circuit Board

EUBANKS 09744-C VALVE DRIVE BOARD

EUROTHERM 020981 DIGITAL COMMUNICATION BOARD

EUROTHERM 020989 PC BOARD

EUROTHERM 022076 PSU BOARD

EUROTHERM 392 206087 RELAY OUTPUT BOARD

EUROTHERM AC131269REV.1 POWER SUPPLY BOARD

Eurotherm AE131248D Pcb Circuit Board

EUROTHERM CONTROLS AC131269 POWER SUPPLY BOARD

EUROTHERM CONTROLS AE131273C PC ADD-ON BOARD PROCESS CONTROL

EUROTHERM DRIVES L5341 LINK CARD

EVO-00659-OA CIRCUIT BOARD

EXAC 05002800 I/O BOARD

EXAC 05003001 REV. A PROCESSOR BOARD

EXAC 05005701 PROCESSOR II BOARD

Exac EX-1200 Mass Flow Sensor 1-1/2in

EXAC PCBA 05005700 PROCESSOR II CIRCUIT BOARD

EXAC PCBA 05005900 INTERFACE BOARD

EXIDE 101070507A PC BOARD 118-302-020

EXIDE 101070622 PC BOARD 118-302-021

Exide 118302019H Pcb Circuit Board

Exide 42-111625-00 Pcb Circuit Board Rev A

EXPLORANIUM GR-510 PC BOARD

Extended 1 Year Warranty

EXTRON CO. PD5038-0102 FAUL AANUNCIATOR FIRST-OUT INDICATOR BOARD

EXTRON PD1028-0151 REV.A PCB CIRCUIT BOARD

EXTRON PD1028-0200 CIRCUIT BOARD

F+P Engineering Control Card 1QR 01-LPT-RGP-1QR-560B04 24V/10A

F8114F BOARD

F8116J BOARD

FABIO PERIN PS12 BOARD

FABIO PERINI C98043-A-1035-L2 PC BOARD

FACTS ENGINEERING 405-9RLY-1 ISOLATED RELAY OUTPUT BOARD

Fanuc 14in CRT SW PCB 1 CRT/2 CNC,A20B-1004-0381

FANUC 1572K85G001 AMPLIFIER BOARD

Fanuc 829-3-1 Counter Pcb Circuit Board

Fanuc A02B-0236-K150 Pc Card Adapter

FANUC A02B-0259-C301 CRT LINK CARD (AS PICTURED)

Fanuc A02B-2900-0900/05A Pcb Circuit Board

Fanuc A16B-1000-0010/07F Pcb Circuit Board

Fanuc A16B-1000-0030/08C Pcb Circuit Board

FANUC A16B-1200-0220/03B PC BOARD

FANUC A16B-1200-0230/05B SERVO BOARD

FANUC A16B-1200-0580/02B BOARD

Fanuc A16B-1200-0800/05A Pcb Circuit Board

FANUC A16B-1200-0800/11B SERVO AMPLIFIER BOARD

FANUC A16B-1210-0080/02C CONTROL BOARD

Fanuc A16B-1210-0340 Pcb Circuit Board

FANUC A16B-1210-0410/03A PC BOARD

FANUC A16B-1210-0450/01A CIRCUIT BOARD

FANUC A16B-1210-0460/05A CIRCUIT BOARD

FANUC A16B-1210-0470/03B CIRCUIT BOARD

FANUC A16B-1211-0060/10C AXIS CONTROL BOARD

FANUC A16B-1211-0060/12C AXIS CONTROL BOARD

FANUC A16B-1211-0062/10B CIRCUIT BOARD

FANUC A16B-1211-0331 CONTROL BOARD

Fanuc A16B-1212-022 Pcb Circuit Board

Fanuc A16B-1212-0531/C1A Power Supply Pcb Board

FANUC A16B-1212-0870/04A POWER SUPPLY BOARD

FANUC A16B-1212-0871/08 PSU BOARD

Fanuc A16B-1212-0901/13C Psu Ai Power Supply Pcb Circuit Board

FANUC A16B-1212-0930/06B CONTROL BOARD

Fanuc A16B-1212-0930/06B Pcb Circuit Board

FANUC A16B-1212-0930/07B CIRCUIT BOARD

FANUC A16B-1221-0860/05A MOTHER BOARD

FANUC A16B1300-0210/01A PCB CARD

FANUC A16B-1500-0010/03B CIRCUIT BOARD

FANUC A16B-1600-0440/07AR CIRCUIT BOARD

FANUC A16B-1700-0020/01A AC SPINDLE BOARD  REMOVE BRACKET

Fanuc A16B-2000-006 Servo Amplifier Board

Fanuc A16B-2000-0062/06C Servo Amplifier Pcb Circuit Board

Fanuc A16B-2100-0200/04C A20B-2002-0711/07C Servo Amplifier Board

Fanuc A16B-2100-0200/04C Pcb Circuit Board

Fanuc A16B-2100-0390 Pcb Circuit Board

Fanuc A16B-2200-0020/03B Pcb Circuit Board

FANUC A16B-2200-0091/03A AXIS CONTROL BOARD

FANUC A16B-2200-0121/06C PROCESS CONTROL CARD BASE

Fanuc A16B-2200-0124 Pcb Circuit Board

FANUC A16B-2200-0171/10A SERIAL PORT BOARD

FANUC A16B-220-0020/03B CIRCUIT BOARD

FANUC A16B-2200-0210/04A PC BOARD

FANUC A16B-2200-025 CONTROL BOARD

FANUC A16B-2200-0471/13B PC BOARD

Fanuc A16B-2200-066 Interface Board

FANUC A16B-2200-0680 PC BOARD AXIS CONTROL

FANUC A16B-2200-0912 CONTROL BOARD

FANUC A16B-2200-0912/05B CONTROL BOARD

FANUC A16B-2200-0912/06B CONTROL BOARD

FANUC A16B-2200-0919 PC BOARD

Fanuc A16B-2200-0950 Pcb Circuit Board

Fanuc A16B-2200-0957/07A Pcb Circuit Board

Fanuc A16B-2201-0080/10B Pcb Circuit Board

FANUC A16B-2201-0110 OPERATORS PANEL INTERFACE BOARD

Fanuc A16B-2201-0110/06A Control Board

FANUC A16B-2201-0311/04B ADAX BOARD

FANUC A16B-2201-0320 / 03A CONTROL BOARD

Fanuc A16B-2201-0472/05D Process I/o Board Pcb

Fanuc A16B-2201-0472/06E I/o Processor Board Pcb

FANUC A16B-2201-0580 MAIN CPU BOARD

FANUC A16B-2201-0811 / 04B OPERATOR INTERFACE BOARD

FANUC A16B-2202-0401/07B CONTROL BOARD

Fanuc A16B-2202-0730 Operator Panel Connection Board

Fanuc A16B-2202-0730/05D Pcb Circuit Board

Fanuc A16B-2202-0733/05D Pcb Circuit Board

Fanuc A16B-2202-0851/01A Analog I/o Pcb Circuit Board

Fanuc A16B-2203-0033/02B Pcb Circuit Board

FANUC A16B-2203-0070 PC BOARD

Fanuc A16B-2203-0080/01A Loader Control Board

Fanuc A16B-2203-0630 Pcb Circuit Board

FANUC A16B-2203-0754/04A BOARD

Fanuc A16B-2203-0910/05A Power Supply Circuit Board

FANUC A16B-3200-0010/05A CPU ASSEMBLY BOARD

FANUC A16B-3200-0040 MAIN CPU BOARD

Fanuc A16B-3200-0040/08D Main Cpu Pcb Circuit Board

FANUC A16B-3200-0054 OPTION BOARD

FANUC A16B-3200-0056 A20B-2200-001 PCB BOARD

FANUC A16B-3200-0060 / 11E CPU PROCESSOR BOARD

FANUC A16B-3200-0070/02A MAIN CPU BOARD

FANUC A16B-3200-0070/03A MAIN CPU BOARD

FANUC A16B-3200-0190/04B MAIN CPU BOARD

Fanuc A16B-3200-021 Amplifier Circuit Board

Fanuc A16B-3200-0210-R Control Board Module Pcb