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。

SUMITOMO JA765332AE Circuit Board (R3S14.5B2)

HAAS-LASER LMP 18-06-51-00 18-06-51-O1 V1.0 MODULE ( (R1S1.8B2)

NORTEL 3.3563.018/01 POSUP POWER BOARD (R4S3.5)

CAMALOT LIQUID DISPENSING SYSTEM W/ MINIMOTOR K456 W/ AUTOTRONICS 28-29A CLUTCH

JDS IPHASE WD1506AD2A-CN2A 1310/1550NM 6-CHANNEL OPTICAL ADD DROP MODULE (R5S9

SATO K43-02-CONT REV 1.3 SYSTEM BOARD (R1S3.8B4)

NESLAB MC005 REV A 024199.2B 512-0 CONTROL BOARD (IN21S2)(IN8S2)

TE Connectivity / AMP High Speed/Modular Connectors V-46 ACC: GUIDE PIN 1-146949

Watec WAT-202D Camera with Computar Telecentric 55mm Lens and moting bar

 · Computar

PARKER VERIFLO 45300401 955Y3NC/NCFSFFFBEV Stainless Steel Diaphragm Valve (TR

ROHDE  SCHWARZ 1147.4780.02 02 1147.4751.02 06 CONTROL CARD W/ 1503.1044.02 ADD

SIEMENS KSP-SV501 00328492-02 A5E00072211 CONVERTER CARD (BR2.3B6)

SMC MXP10-20B MXP SLIDE TABLE (IN22S3B3)

ROHDE  SCHWARZ 1147.4780 1147.4780.02 02 1147.4751.03 09CONTROL CARD

Nordson 7264848 Kit Consumables NJ

NAIS UZWB43 / SX SL-TBP16 SENSOR AND WIRE-SAVING LINK SYSTEM S-LINK

Cutler Hammer ELHFD4100L Series C Industrial Circuit Breaker (IN12S2)

DWYER GFM-2143 MASS FLOW METER GFM SERIES (R3S7.3B3)

AGILENT 5075-0601 CBL LIMIT SWITCH TO MAIN PCB (R4S11.2B4)

PARKER IR4004SK3PX4B STAINLESS REGULATOR (R5S7.7B2) (R5S5.7B3)

T.A.C. EM24 876-0000-000 ACTUATOR (R5S1.7B3)

ER (U4.4b2)

VARIAN 1210-3101 ABSELUT NEXUS 60MG VOLUME 3ML QTY 100 (R4S9.4B4)

ITT CANNON - MS3112E18-32PY - CONNECTOR, CIRCULAR, SIZE 18, 32WAY. Lot of 10

ETHROG BIOTECHNOLOGIES INVITROGEN S37102 SAFE IMAGER BLUE LIGHT TRANSILLUMINATOR

CONTROL TECHNIQUES COMMANDER SE SE 11200037 Inverter Drive (IN31S2)

REXROTH 450mm LINEAR RAIL W/ R162211320 BLOCK (IN32S1B1)

CIENA NNTMRT0JKKL6 174-0037-430 001 BACKPLANE FOR CIENA 6500 (R6S-1.5)

BODINE 0190MR 0190MRPB0005 GEARMOTOR (FIREHOSE )

Opto 22 SNAPD12MC Snap Terminal Module Board W/ (X12) OPTO 22 SNAP I/O SNAP-ODC5

APEX DYNAMICS AB090-S2-P1 RATIO 020:1 GEAR (U9.2B2)

REXROTH HCS02.1E-W0012 HCS02.1E-W0012-A-03-NNNN INDRADRIVE (RS4.1)

SIMCO 4000464 POWER SUPPLY W/ X2 SIMCO HZ NOZZLES (R3S11.2)

SANYO DENKI RS1S05AA0HF08P1L SANMOTION R AC SERVO SYSTEM (RBD1.3)

LOGIC CENGPXA270-520-11-504HCR-A (Lot of 1 piece)

Agilent Waters WAS081143 Filter Wheel Assembly..

Waters Symmetry C18 VanGuard Cartridge, 100�, 3.5 µm, 3.9 mm X 5 mm

NAIS AFP1732CE FP1 I/O LINK IT

TEKTRONIX RMD3000 Rack Mot Kit for MSO/DPO3000 Series Oscilloscopes  

KURODA SU135-0677 A0 REGULATOR (BR2.2B14)

GROSCHOPP WK1694701 GEARMOTOR (IN21S3)

150mm X 100mm X 50mm stainless MANIF W/ X2 HAM-LET 316-SR1 ELBOWS  FITTINGS

150mm X 100mm X 50mm stainless MANIF W/ HAM-LET 316-SR1 ELBOWS  316 ST9  F

ALCATEL ACPS 0710-2009-001 A 1300-02009-001 C POWER SUPPLY (R2S1.5)

SMC MANIF W/ X9 NVFS2100-5FZB SOLENOID VALVES (R4S5.6B1)

MASS MULTIMEDIA LCDSA151V-PM PANEL MOT 15.1" COLOUR LCD W/ POWER SUPPLY (R6S9

EBMPAPST PG1Q-024-030-01 (rs2.1b4)

SAINT GOBAIN FURON UPM2-61216NC 1102823 DIAPHRAGM VALVE (BR5.1B5)

CONNECTRONICS CORP OLE36-10740-01 59782-01022898-00 A (R3S8.3B2)

OMEGA CN77524 CN77524-C4 TEMPERATUR PROCESS CONTROLLER (IN10S1B1)

YASKAWA CACR-02-SU3 SERVODRIVE MODULE (R3S10.3)

KOHYOG STMC VER 5.2 BOARD (R5TROLLEY.4B1)

GRANT JB AQUA 2 PLUS ANALOG WATER BATH (MOTORSHELVES) NO LID

SIEMENS 6SE3290-ODA87-0FA1 POWER LINE FILTER Tracked or

ODRIVE S37 DT80K4 01.1142856901.005X06 GEAR MOTOR (motors)

LUCENT VPN FIREWALL BRICK 350 AC 300659935

BALDOR WDM3538 35S578P86G1 MOTOR (BR5.1B2)

NORD SK1SI50 SK1SI50/31FH GEAR REDUCER TEC 712-8 1283TECAB3 09101305320 MOTOR (

PLACID INDUSTRIES PS-12-M2 12VDC POWER SUPPLY (R5S3.3)

NOKIA CCPC2-A C100575 D01 TELECOMS CARD (UPTABLE)

FUJIKIN FPR-PSD-21-6.35UGC#C valves 4/PK (BR6.1B51)

VARIOUS OMRON CJ1W / CJ2M MODULES (R5S2.2)

Shinkawa CMU-30 CAMERA HEAD W/ LENS  FIBRE OPTIC LIGHT GUIDE (R5s9.3b1)

EMERSON 960186-01 LF1 SINGLE PHASE RFI FILTER (IN10S3)

SWAGELOK SS-HFS4B-HVCR4-P25 GAS PRESSURE REGULATOR (IN38S2)

MKS 51A13TCA2BA700 BARATRON PRESSURE SWITCH (R2S7.5B3)

YOKOGAWA MCM 131067H modules (R2S8.8B2)

SIEMENS 00353444-01 PC-TBS/XY-2 FTBS250/20Y SERVO DRIVER MODULE R1S5.7B2 (R3S3.7

WANDEL  GOLTERMANN DF-64 Error Ratio Measuring Set (r3s14.4)

FESTO 554221 ADNGF-20-10-P-A COMPACT CYLINDER (IN8S1B2)

MURATA GRM155C81E105KE11D CAP CER 1UF 25V 10000/PK (R4S8.1B2)

SG 2109-1 VOLUME DISPENSER (R5S2.2)

SCH 90943276 90943284 CONTROL CARD (IN25S3B2)

NOKIA CCPC2-A C100575 D3B CARD (NOKIAPALLETUPSTAIRS)

SWAGELOK SS-HFS4B-HVCR4-P35 GAS PRESSURE REGULATOR (R3S1.3B2)

SIEMENS 00353443-01 PC-TBS/XY-2 PTBS250/10X SERVO DRIVER MODULE R1S5.7B2 (R4S2.6

SIEMENS G32918-K0084-U501-01-U1 00335892-01 PX23456789 CIRCUIT BOARD MODULE (IN

AZBIL DMC10S2TV0300 PLC Temperature Controller (BR5.1B6)

3D SYSTEMS 23205-002-00 REV A 23205 I/O BOARD (R5S5.4B2)

KYOCERA KCE KCE32NZ PRINT HEAD (IN23S1B1)

SMC LVM-6A2-XS1 Direct-acting solenoid valve for small chemical liquid (IIN23S2B

TECHNART CO LTD TM057-SYX03 COLOUR LCD MONITOR FOR Sysmex POCH-100i Automated He

MKS 660B10 DIGITAL POWER SUPPLY (R2S1.2B3)

SC-15A 2003-2 POWER SUPPLY BOARD (BR2.6B1)

EVIAN 1014T14 DN 1/2" GAS SS316L 56527 DN15 PN40 1/2" VALVE (IN9S2)

DWYER DIGIHELIC DH-002 0-0.25 IN PRESSURE CONTROLLER (R5S1.2)

ABB S202-D10 2CDS252001R0101 MINIATURE CIRCUIT BREAKER 5/PK (R1S7.5)

ABB ESB20-20 GHE3211102R0006 CONTACTOR 9/PK (R1S7.5)

Harro Höfliger 4325.156.17 B TENSION SPRING 3/PK (R6S0.4B1)

ELBA ESPM81154 ESPM81154/X REGULATED POWER SUPPLY (R2S8.4B1)

DI-SORIC D7C12V06PSK-IBSL D7C 12 V 06 PSK-IBSL INDUCTIVE PROXIMITY SENSOR

THK ER1025C1100L PRECISION LINEAR RAIL 2/PK (IN21S3)

SCHMERSAL AZM161BST1-ASRP SAFETY INTERLOCK SWITCH (IN21S3B1)

FRENIC MINI FRN0.4C1S-7J 1KVA INVERTER (R1S11.7B1)

ENTEGRIS 4100-150G-F02-A00-A-P1-U1-3C06 SINGLE PORT PRESSURE TRANSDUCER

TDK LAMBDA F13-621229-3-3 ULTRASONIC FLOWMETER (R5S3.5)

TDK LAMBDA F13-621226-4-3 ULTRASONIC FLOWMETER (R5S3.5)

TDK LAMBDA F13-621134-4 ULTRASONIC FLOWMETER (R5S3.5)

TDK LAMBDA F13-621229-3-4 ULTRASONIC FLOWMETER (R5S3.5)

TDK LAMBDA F13-621228-2 ULTRASONIC FLOWMETER (R5S3.5)

HORIBASTEC SEC 7340 SEC-7340M C 818 AR 5SLM MASS FLOW CONTROLLER (R2S7.2)

HORIBASTEC SEC-7330 SEC-7330M C 818 HE 500SCCM MASS FLOW CONTROLLER (R2S7.2)

HORIBASTEC SEC-7340 SEC-7340M C 818 NF3 3SLM MASS FLOW CONTROLLER (R2S7.2)

HORIBASTEC SEC-7330 SEC-7330M C 818 HE 2SLM MASS FLOW CONTROLLER (R2S7.2)

PURERON TF-4-03SW-P 0.01 MICRON 0.98MPA PTFE GAS FILTER (BR5.4B1)

HORIBASTEC VC-1000 VC-1420 0001 AURORA2.7 400SCCM VAPOR CONTROLLER (R4S3.2)

KSG DLK UMBC03B POWER SUPPLY BOARD (R4S13.3B2)

Leica 10447136  10447137 Fixed Widefield Stereo Zoom Microscope Eyepieces 10x/2

LENZE E82EV371_2B 00414832 45302812 VECTOR FREQUENCY INVERTER (R4S9.4)

COSEL PAA300f-24-W 350W 24V 14A SWITCHING POWER SUPPLY (R5S8.3)

DAIHEN RMN-198B RMN-198B-06 KK-018-06 STEPPER DRIVER (R5S2.3)

YASKAWA SGDM-A3ADA AC SERVOPACK SERVO DRIVE (R3S2.2)

MIRAE MRC-SPA-D DRIVER (R3S9.7)

YOKOGAWA JP208-DAC 0-25PA DIFFERENTIAL PRESSURE SENSOR (R4S3.7B1)

SMC MXS16-50BS PNEUMATIC SLIDING TABLE (R2S2.3)

SMC SS5Y3-20-09 MANIF W/ X6 SY3120-5LZ-C4 W/ X3 SY3220-5LZ-C4 SOLENOID VALVES

ORIENTAL MOTOR 6GK30K GEAR HEAD (R2TROLLEY.5)

1 PIECE OF DIGITAL H7876-AA

MATSUSHITA NATIONAL SEQUENCER PL EXPANDER IT M40 MARK II APL4705025

1 LOT OF 1000 PCS HITANO FMFR-300S

SMC MXS25-50AT SLIDE TABLE (RS5.4B2)

LITTLEFUSE 0215005M- CERAMIC FUSE 5X20MM 270PK (U2.4B4)

VARIAN 946-9395 OIL MIST ELIMINATOR (R4S9.4B5)

HIWIN KK40 KK4001C 1701R6-2002 200mm LINEAR STAGE W/ ORIENTAL MOTOR BLHM015K-10

 CAPACITORS (U6.3B2)

NORTEL NTEU10AA TRIB CARDS VARIOUS REVISIONS

NAIS AFP3462 COMPUTER COMMICATION IT

TYCO 8-1437349-3 Power Line Filters OEC CRS5-20F 10/PCS (R1S13.3B2)

NETAPP 111-00249A0 PCI-E Copper Interface

Varian CP7772 WCOT F Silica 50m x0.32mm

POWER-ZT6303 CPA250-4530S181 250W CONVERTER (R3S8.3B2)