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

 METSO FPUS2 28VDC BACK UP POWER SUPPLY 110VAC INPUT  ADA7532-D201107-4

METTLER TOLEDO 047965

METTLER TOLEDO 22007849 TBRICK 15-EX MESSZELLE

METTLER TOLEDO 52500010 CR7390-130VAC 5A

METTLER TOLEDO 58000804 M800 100-240V 2.0A

METTLER TOLEDO 72997838 V3L

METTLER TOLEDO 78J300000000A00 IND780HARSH

METTLER TOLEDO 78S300000B00000

METTLER TOLEDO IND780 PANEL 78S100000C00000 100-240VAC

METTLER TOLEDO LIQ-96-200

METTLER TOLEDO MS1003TS/00 12V 0.84A

METTLER TOLEDO XP205V,X205TV ,24.28.0.1545.142 ANALYTICAL BALANCE SCALE

MEYLE 514 814 0002

MFD2-85TH AR10775PA440,SPC-GE KR10775AA440

MFQ-100A-1600V RECTIFIER MODULE (x1) fba39.1

MG TR 500 TEMPERATURE CONTROLLER

 MGE 51028055XD-1HA,ETOI PCBA GALAXY-PW 51028056SE BOARD

MGE ALBT 3402068300 CA,640-34020682XD-1CA BOARD

MGE ALEZ 6739818 HA,6739817XD-2HA BOARD

MGE CARTE 3402062000,34020619XD-1FA INPUT BOARD CONNECTOR BROKEN

MGE CARTE AFSI 5102806200,51028061XD-4EA PCB BOARD

MGE CARTE AFSI 5102806200,51028061XD-4FA PCB BOARD

MGE CARTE CCSI 51028797 CA,51028796XD-1CA BOARD

MGE CARTE INPUT BOARD 640-34020619XD-1FA 3402062000

MGE CRATE CSNEN 3400118700,640-34001186XD-1FA BOARD

MGE CRIZ 34401205 AA,6739803XD-2FA BOARD

MGE DALIT 3402063200 CA,640-34020631XD-1CA BOARD

MGE DIGIT 3402087500 EK,34020874XD-1EA BOARD

MGE DIGIT 3402087500 EQ 0P3087EQ,34020874XD-1EA BOARD

MGE EXPUT 3402062700 EB,34020626XD-1EA BOARD

MGE GTCZ 6739827XD-4DA,6739827XD-1DA,522782DB BOARD

MGE VENT 3402106200,640-34021061XD 1DA BOARD

MGV DG26-15021-2G POWER SUPPLY

MHA PKH DN10 BALL VALVE FOR MANIFOLD MOUNTING PN500

MHCTW12, MHCTW12 Oil Free Bushing Housing Unit, #1648P27

MICHELL INSTRUMENTS EAS-TX-100-F-DH EASIDEW DEW POINT TRANSMITTER

MICO 02-500-017 REPAIR KIT

Micrel IC Reg LDO Adj, MIC29152BU,  34,  H#43

MICRION 150-001160,150-1160 REV:D1 BOARD

MICRION 150-00152,150-1522 REV:D1 BOARD

MICRION 150-00152,150-1525 REV:D3 BOARD

MICRION 150-001710,150-1710 REV:B2 BOARD

MICRION 150-001840,150-1842 REV:C BOARD

MICRION 150-001870,150-1870 REV:B1 BOARD

MICRION 150-001870,150-1871 REV:B BOARD

MICRION 150-001980,150-1982 REV:A1 BOARD

MICRION 150-1082 REV:E BOARD

MICRION 150-1090 REV:C5 BOARD

MICRION 150-1110 REV:B BOARD

MICRION 150-1381 REV:C7 BOARD

MICRION 150-1810 REV:B1 BOARD

MICRION 150-891 REV:H BOARD

MICRION 150-892 REV:H BOARD

MICRION 9000-VAC CON-HEATER CONTROLLERPCB 150-001580,150-1582 REV:C4 BOARD

MICRION 9000-VAC CON-HEATER CONTROLLERPCB 150-001580,150-1586 REV:C4 BOARD

MICRO CONTROL BOX ACOR2000-6,APCB0028

MICRO DESIGN MC100MA/V10 BOARD

Micro Devices Ethernet Fiber and Copper Media, ML6652EH,  50, SHIPSAMEWDAY

MICRO DYNAMICS MC8000 REV:1.3 BOARD,MC8000-DUAL

MICRO ELECTRONICS (ME uE) FPT100A VINTAGE PHOTO TRANSISTOR FUZZ PEDAL fcb11.6

MICRO INNOVATION XVS-430-57MPI-1-1S 24VDC 0.8A

Micro Lambda Frequency Multiplier 140115-01, MLHG-1029, #1171P8

MICRO MEMORY MM-6260AD BOARD MM-6260A/16M REV:G

MICRO MOTION 1700C11ABAEZZZ 18-100VDC

MICRO MOTION 1700C11ABUEZZZ 85-250VAC

MICRO MOTION 1700R11ABAEZZZ

MICRO MOTION 1700R12DBAEZZZ 85-265VAC

MICRO MOTION 2400SIA13B2EZZZ

MICRO MOTION 2700R12BBAEZZZ 85-265VAC

MICRO MOTION 3700A1A03DUEZGX 85-250VAC

MICRO MOTION 9739MVD61UAEZZZ

MICRO MOTION 9739MVD61UAEZZZ 85-250VAC

MICRO MOTION 9739MVD61UJEZZZ 85-250VAC

MICRO MOTION 9739MVD63UJEZZZ 85-250VAC

MICRO MOTION CMF010M313NQBUEZZZ

MICRO MOTION CMF010M323NABUEZZZ

MICRO MOTION CMF010M324NRAUEZZZ

MICRO MOTION CMF010P323N2BAEZZZ

MICRO MOTION CMF025M313NM 275PSI

MICRO MOTION CMF025M319N3BAEZZZ 17.3V -40/60'C

MICRO MOTION CMF025M319NRAUSZZZ 4.86154.75 850PSI

MICRO MOTION CMF025M319NRAUSZZZ 4.87314.75 850PSI

MICRO MOTION CMF050M313NRAMEZZZ 275PSI

MICRO MOTION CMF050M313NU 850PSI -240-+204'C

MICRO MOTION CMF100H530NU 5V 275PSI

MICRO MOTION CMF100M010NU 1450PSI

MICRO MOTION CMF100M328NU

MICRO MOTION CMF100M339N2BAEZZZ 17.3V 1450PSI

MICRO MOTION CMF100M339N2BMEZZZ

MICRO MOTION CMF200M420N2BAEZZZ 17.3V 550PSI

MICRO MOTION CMFS010M324N2BAECZZ

MICRO MOTION CMFS015M313N2BAECZZ 17.3V 275PSI

MICRO MOTION CMP050M999NQBUEZZX

MICRO MOTION DS040S121SU

MICRO MOTION DS150H147 1500PSI

MICRO MOTION EMERSON CMF050MA14N2BAEZZZ 17.3V 850PSI -240'-+204'C

MICRO MOTION EMERSON CMF100MA26N4BAEZZZ 17.3V 625PSI -240'-+204'C

MICRO MOTION F025S113CCAAEZZZZ 85-265VAC 275PSI

MICRO MOTION F100S138CCAAEZZZZ 2700I12BBAEZZZ

MICRO MOTION F100SI128SU W/ IFT9701I6N3U 85-250VAC

MICRO MOTION F100SR136SUR

MICRO MOTION H025S121NABAEZZZZ

MICRO MOTION H025S121NCAAEZZZZ 17.3V (AS PICTURED)

MICRO MOTION H025S121NQBAEZZZZ 17.3V

MICRO MOTION H200S352NCAAEZZZZ w/1700I11ABAEZZZ

MICRO MOTION IFT970116N3AEZ W/F200S418CIAAEZZZZ

MICRO MOTION R025S113NCAMEZZZZ 1700I11ABMEZZZ

MICRO MOTION R025S115NCAASZZZZ 17.3V

MICRO MOTION R025S115NCAASZZZZ 1700I12ABASZZZ 39.68043.65

MICRO MOTION R100S129NCAAEZZZZ

MICRO MOTION R100SI138M 1FT9703IC3W1M

MICRO MOTION RFT9739D4SUAEZ (AS PICTURED)

MICRO MOTION RFT9739D4SUAEZ 85-250VAC

MICRO MOTION RFT9739E1SU 100/115VAC

MICRO MOTION RFT9739E4SUJEZ

MICRO MOTION T050T6138CAUEZZZZ 17.3V 275PSI

MICRO MOTION T150T625SBBCEZZZZ (AS PICTURED)

MICRO MOTIONS CMF010M321NM

MICRO PIOUS S-VC-80246 KDNS HEATER CONTROLLER 8CH POWER ON

MICRO SCIENCE ADM-686PCI MS-940329 BOARD

MICRO SCIENCE HDA-770PCI MS-940365, MS940360 BOARD

MICRO SCIENCE MDA-781PCI MS-940343 BOARD

MICROBUS BACK PLANE FOR SBC SINGLE BOARD COMPUTER EMBEDDED SYSTEMS fd3G2

MICROBUS BACK PLANE FOR SBC SINGLE BOARD COMPUTER EMBEDDED SYSTEMS fd3f#

MICROBUS MAT-840 ISA SINGLE BOARD COMPUTER SBC AMD K6-2/300AFR fd3f*

MICROBUS SBC VISION968 PCI GRAPHICS CARD ALSO DRIVES A TFT PANEL fd3f4

Microchip / Microsemi Ethernet ICs Dual, VSC8572XKS-01‎,

Microchip ATSAMD21G17A-AF, 556-ATSAMD21G17A-AF,  250,

Microchip ATSAMD51N20A-AF, 556-ATSAMD51N20A-AF,  90,

Microchip ATSAMD51N20A-AFT, 556-ATSAMD51N20A-AFT,  90,

Microchip Technology 24LC02BHT-E/LT, EEPROM 2KBIT I2C,  2595,

Microchip Technology IC OPAMP GP 1 CIRCUIT 8SOIC, MCP601-I/SN,  145

Microchip Technology, SY88147DLKG‎, 1470BL0DKLGT01,  SHIPSAMEWDAY