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。
PARKER CLIPPER OIL SEAL 4QTR08
ARROW/MEAD 1/8" NPT 150 PSI PNEUMATIC FILTER F300-01
1 ARROW/MEAD 1/8" NPT 150 PSI PNEUMATIC FILTER F300-01
IN BAG SMC 3-PORT MECHANICAL VALVE W/ PUSH BUTTON AND CAPS VM130-01-33A
REXNORD 10' TABLE TOP CHAIN 10177704
SAGINAW 4 PC. EL MOT FOOT KIT SCE-ELMFK4
ROTANIUM 15A 125V SAF-T-CONNECT CONNECTOR L5-15 52091
SIEMENS FLUSH BLUE MOMENTARY PUSH BUTTON 3SU10310AA500AA0
SEALMASTER FK BEARING 1/4" MALE ROD END ARE-4N
ALLEN-BRADLEY 24VAC/DC STACK LIGHT BASE 856T-B24C
PNEUMATIC PRODUCTS FILTER CARTRIDGE 2016920
MORSE 30 TEETH TORQUE LIMITER SPROCKET 500-AG530 / 500-AG530-SPKT
PMC 0-150PSIG 24VDC PRESSURE TRANSMITTER MIN-PTEL-HC-TH-D PT-EL
WECO STEM SLEEVE ASSEMBLY 173283 REV. 8
ALTO CONTROLS 208-240V 1/4" 2-WAY SOLENOID VALVE GS1151
MRC 30MM X 72MM BALL BEARING 306-S/H201
OMRON PHOTOELECTRIC SENSOR E3B2-R7M4-US
BENTLY NEVADA PROXIMITY SWITCH 21504-00-16-10-02
SEALMASTER ROD END WITH SPHERICAL BEARING CFML-5
DODGE 1-3/16" FLANGE BEARING LF-SXV-103-NL 062454
ASCO TRI-POINT POSITION SWITCH SD11D
OF (2) BSB 2" RUPTURE DISKS JRS
MOTION PLUS DIGITAL SERVO CONTROLLER EDC-200
MITSUBISHI ELECTRIC RFI FILTER FS5710-4.5-07 126654
MAC 24V PILOT SOLENOID VALVE PME-591DAAG
MAZAK PANEL METER D22MA000010 YM-206F-1MA-FS
IN FACTORY PACKAGING IFM EFECTOR 5-PIN 2M CORDSET EVC001
SCHMERSAL ACTUATOR KEY RETROFIT KIT AZ15/16-B1-2053 1111081
FESTO 24V 3/2 CLOSED SOLENOID VALVE MZH-3-M3-L-LED
SKF 35MM X 62MM BALL BEARING 6007-2RS1/C3
TURCK 30V INDUCTIVE PROXIMITY SENSOR BI5-G18-AN6X 50MM 4641500
STRUTHERS-DN 120V COIL RELAY A314XCX48P
SQUARE D 230/240VDC DC CONTACTOR COIL A51017-056-50
AUTOMATION DEVICES 120V COIL 0511A
SKF DEEP GROOVE BALL BEARING 61814
OMRON 5A 250V ADJUSTABLE TIMING RELAY H3CR-A8
LUMENITE 1-PROBE 24" LIQUID LEVEL PROBE 3DAFT2
CUTLER-HAMMER 120V COIL 1884-1
METSO 2" VALVE REPAIR KIT RKN359XT
FAFNIR BEARING P4K
PRECISION OUTDOOR LIGHTING PHOTOCONTROL ST-347
AXIS CONTROL IT UM3015-100
INTERCON FANUC 30M POWER CABLE CP2I-0WEB-0300-AZA
KING ENGINEERING D/P SENSOR CONTROL 0-30 PSID 868-39-108
GATES SUPER HC V80 BELT 3VX355/ 9412-0355
LOT OF (2) FISHER ACTUATOR RELAY VALVES 1H855335032
DODGE 1-7/16 PILLOW BLOCK BEARING P2BSXV107
NOS JAMESBURY 1/2"FNPT CARBON STEEL BALL VALVE 9FB-2236-TTB 9FB2236TTB 150PSI
TELEMECANIQUE 240V 7W BLUE STACK LIGHT XVA-LC3-B
AGASTAT 24V 1A 0.5-10 SEC TIMING MODULE VTM1ECD
ATLAS COPCO HP SILENCER ZR4 SERVICE KIT 2910-0205-00
ROBOHAND 1/2" STROKE GRIPPER RP-50P-E
CAROL GENERAL SOD SECUITY 1000' CABLE E2033S.41.10 18 GAUGE
ASCO 8346 SOLENOID VALVE 3-POS. FLOW GASKET KIT 1/4 3/8 1/2 3/4 NPT 204-381
CAJON 20MM TUBE X 1" NPT MALE CONNECTOR SS-20M0-1-16
FABCO-AIR PNEUMATIC PRESSURE BOOSTER BP4X4X2FF
GARLOCK G-98 3/8" 9.5MM 1LB COMPRESSION PACKING 41087-1024
.75HP 1725RPM 3.2-3/1.5A MOTOR A-64686957 M7010A
GALIL MOTION CONTROL DAUGHTER BOARD DMC-1730
FAG SPHERICAL ROLLER BEARING 22222E1K
FISHER FLAPPER ARM SUB ASSEMBLY 13A1451X012
HONEYWELL 13" OD DIAPHRAGM VALVE GA-33671-801
GE GENERAL ELECTRIC SPINDLE DRIVE BOARD 193X529BBG01
ABSOLUTE PROCESS 115V ISOLATOR TRANSMITTER API-4380G-DF
TAKE OFF SIEMENS SIMATIC S7 CONNECTING MODULE 6ES7-194-4AD00-0AA0
MALLORY OHMITE 50 WATT 2500 OHM RHEOSTAT 50K2500P 0328
MCGILL NEEDLE ROLLER BEARING MR-14-S
LOT OF (2) LITTLEFUSE 30A 300V 3 POLE FUSER HER 12U1 / L30030G3SQ
SKF SPHERICAL ROLLER BEARING 22319-CJ/W33
HONEYWELL YAMATAKE 30V PROXIMITY SWITCH FL2-4A6H
KEYENCE FIBER OPTIC SENSOR FS-TIP
INPRO SEAL BEARING ISOLATOR 1000-A-33665-0
NUMATICS 2-1/2" X 12" PNEUMATIC CYLINDER S2ASPM-12A21D-AAA
GE GENERAL ELECTRIC 5A SPDT 12V COIL RELAY CR220HH78C09
ASCO RED-HAT 11.6W 115PSI SOLENOID VALVE EF8320G184
CKD 1/2" STROKE PNEUMATIC CYLINDER SCPD2-1615
BANNER 24V SAFETY RELAY MODULE ES-FA-9AA 60131
SKF BALL BEARING 6020-2RS1/HT51
CEC INDUSTRIES 6.3V AMBER LED BULB LM1006MB-A
SCHNEIDER 12-230V CLEAR STEADY LED STACK LIGHT XVB-C37
NASON 100/120 PSI LINK AIR-RIDE PRESSURE SWITCH SM-1B-125R/WL600
RELIANCE ELECTRIC PROCESSOR MODULE 0-57407-4A O-57407-4A
ASCO 110/120V SOLENOID VALVE JB8214280C
BROWNING TIMING PULLEY B228M30B
ALLEN-BRADLEY OPERATING HANDLE 190-HM4E
GE GENERAL ELECTRIC 25A 3-POLE 120V COIL CONTACTOR CR7CC-10
FAFNIR 2 BOLT FLANGE BEARING FLCT-1-1/4
MAC 24V 3/8" 3-WAY SOLENOID VALVE 56C-12-611CA
GE 120V 1 PHASE 4.5A VOLT-PAC VARIABLE TRANSFORMER 9T92-A5
GE GENERAL ELECTRIC 24V POWER SUPPLY MODULE P9PDNVD
BENTLY NEVADA VELOCITY SEISMOPROBE 74712-06-03-03-00
GE 277V COIL 3-POLE CONTACTOR CL00A310T
ATC AUTOMATIC TIMING CONTROLS INC AMPLIFIER 650127005
WESTINGHOUSE 3P 15A CIRCUIT BREAKER MCP03150CR W/ EL3015R
BROWNING TIMING PULLEY 14HG100
SEALMASTER 1-1/4" BALL BEARING INSERT 2-14TC
MAC 120V 1/4" NPT 4-WAY SOLENOID VALVE 912B-PM-114JM
IFM EFECTOR 20-140V SENSOR IFK2004BAROA/SL/LS-100AK RT-IF0311
YASKAWA 52P2/53P7 PCB CAP PGCT31005 YPCT31679-2C ETX711150 UMC15018-
BENDIKT JAGER 50A 690V 2-POSITION ROTARY CAM SWITCH N33F-E-A4
GE GENERAL ELECTRIC 115V REAL COIL 15D3G2
RELIA MARK SHAFT COLLAR 2SC-200RM
AUTOMATION DIRECT 110VAC INPUT MODULE D4-16NA
CONTROLOCO AUTOMATION SENSOR KSS-H1B480-2
SENSOPART DOVETAIL ALUMINUM MOTING COMPONENTS MBD F 25 661-01000
HUMPHREY SEAL KIT SRK125P
DYNAMIC FLUID COMPONENTS DFC HYDRAULIC MOTOR BMP-H-160-2-K45-4381-1606
BAUMER 12-30V INDUCTIVE PROXIMITY SWITCH IFRM-12P1701/PL
SEIMEC 1.1/1.32kW 1420/1700RPM MOTOR HFF-90SA-4-B14
NSK DOUBLE ROW BALL BEARING 5312C3
MAC 3-POS CENTER CLOSED MAIN VALVE REPAIR KIT K-66003
PEPPERLFUCHS 20-260V PHOTOELECTRIC SENSOR CP18LBAD2
ELESTA 8A 250V 12V COIL RELAY SIM212-12VDC
NORDSON 9/16" 45 DEGREE ADAPTER FITTING 2174179-A
IKO CAM FOLLOWER BEARING CR 28 UU
SIEMENS SIMATIC S7 5V 1 COT ELECTRONICS MODULE 6ES7138-4DE02-0AB0
VORTEX COOLER SYSTEM / 35 SCFM 785
TIFFEN 40.5MM SCREW-IN LENS FILTER SKY-1A
ROBINSON RELAY DRIVER CARD 12-1238
SKF ROLLER BEARING 21307-J
SPOWER 100-240V 1.8A 60W POWER SUPPLY SPS-060-T2A
ABBOTT MAGNETICS 50:5 CURRENT TRANSFORMER 2RL-500
1 ABBOTT MAGNETICS 50:5 CURRENT TRANSFORMER 2RL-500
QTY 3 MARSH BELLOFRAM 1.5" 40MM 0-30 PSI PRESSURE GAUGES M4042P
BYPASS 20/40/40/20 A 120/240V CIRCUIT BREAKER B3220240 QFE002LLC
ISSC KANSON 120V TIME DELAY RELAY 1071-1-P-1-B
BODINE 115V 86 RPM 1/450 HP 18:1 GEAR MOTOR 1/4" SHAFT KCI-23A2
MAC SOLENOID VALVE FC92A-AA
AUTOMATION DIRECT ZIPLINK 2A 250V 19P PLC I/0 CABLE ZL-D2-CBL19-1
OF (5) INA BEARINGS LR5202-X-IS1-2Z-TVH-XL
RADISYS SUPER VGA BOARD EXM-13A 61-0154-21
ASHCROFT /- 05" WC DIFFERENTIAL PRESSURE TRANSMITTER C1