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。
LUMAPRO 5PF41 15 WATT PLUG-IN PORTABLE DERCABINET LIGHT FIXTURE 120VAC
TYSON ROLLER BALL BEARING 3980
ALLEN BRADLEY 1771-P4S 120 VAC POWER SUPPLY MODULE
DM SALLEN BRADLEY 1771-P4S 120 VAC POWER SUPPLY MODULE
GATES POLYCHAIN GT BELT 8MGT-1200-210
LIN WADE YELLOW POLYETHYLENE TUBING 5/16" x .187" WALL 100' 1J-077-08U
ITT S302AF02V3BC5 120 VAC VALVE 325 PSI
MARTIN SHEAVE 1 B 48 SDS 4.8" O.D B-BELT QD BUSHING 1B48SDS
ALLEN BRADLEY STYLE 2 MCC BUCKET SHELF DIVIDER SERIES 2100
MARTIN TAPER-LOCK BUSHING 2517 1 1/4
BELL HOWELL VINTAGE CAMERA FILMO DOUBLE R EIGHT CAMERA W/INSTR CASE LENSES
BONNEY FORGE 1/2" VALVE BONNEY FORGE HL-52 1/2" CLASS 800
SQUARE D SIZE 00 MOTOR STARTER 600 VAC 110 / 120V COIL 3 PHASE 3P 8536SAG12
SKF 5309 AH DOUBLE ROW ANGULAR CONTACT BALL BEARING 45mm x 100mm x 39.7mm
CUTLER HAMMER SIZE 1 MOTOR STARTER 120 VAC COIL 27 AMP 10 HP 3Ø 600 VAC A10CN0
DM SCUTLER HAMMER SIZE 1 MOTOR STARTER 120 VAC COIL 27 AMP 10 HP 3Ø 600 VAC A10CN0
DWYER RMC SERIES VAPOR FLOW METER 240 kPa 35 PSIG 54°C / 130°F MAX
CISCO CP-9971 UC PH IN CISCO
DELL 1U CABLE MANAGEMENT ARM KIT FOR POWEREDGE SERVER DP/N 02J1CF
DM SALLEN BRADLEY 800H-PRL16G LED GREEN PILOT LIGHT 800T-N77G
SWAGELOK SS-16-HN HEX MALE NIPPLE 1" MNPT X 1-1/4" MALE NPT
ALLEN-BRADLEY 800T-PA16 PUSH BUTTON PILOT LIGHT 120VAC
RANCO L56-3001 SENSOR PROBE
DIXON SAFETY CHECK VALVE SCVS-6 MALE TO FEMALE 3/4" NPT 160-180 CFM 90 PSI
OAKTON WATERPROOF PH TESTER 2 DOUBLE JCTION
DM SO'KEEFE CONTROLS STAINLESS G-47-SS ORIFICE ADAPTER TYPE G
ASHCROFT 208-050-02 PRESSURE TRANSDUCER PC BOARD
DM S ALLEN BRADLEY CONTACT CARTRIDGE 800C-X10 BP 1-N.O LOT OF 6
ALLIANCE EXPANSION VALVE ABP-N83-308241 BEHR BOA-80-321-00-269
APPLETON UCPL AMBER LED PILOT LIGHT 240V PANEL MOT
APPLETON UCPL BLUE LED PILOT LIGHT 120/240V PANEL MOT
AMI 2 HOLE FLANGE MOTED BEARING 1" BORE 3.75" OUTER DIAMETER BFX205-16
DM S SQUARE D DD300 OVERLOAD RELAY HEATER ELEMENT
MARTIN TAPER-LOCK BUSHING 3020 2 3/8
DODGE 3020 X 2-3/8-KW TAPER-LOCK BUSHING
ALLEN-BRADLEY SIZE 0 MOTOR STARTER 120V COIL 600V 5 HP 3Ø 509-AOD / 509-A0D
2DM STOGGLE BOLTS 5/16" X 4" TOGGLE BOLT ROD HEAD TB5640R OF 25
DM SSCHNEIDER / TESYS 10 HP MANUAL MOTOR STARTER 110-240V 1.25-5.0A 3Ø LUCA05FU
100) SOLON CJL802T 1/2" GRADE 316 STAINLESS STEEL BEVELED WASHER LOT OF 100
MOOD MEDIA PROFUSION IS MODEL 2010 DIGITAL MEDIA MANAGER 12 VOLT 2 AMP
GE CR305X701C SPACE HEATER KIT SIZE 0 1 600V 50 WATTS
NACHI 2911A THRUST BALL BEARING 55mm X 78mm X 18mm NACHI 2911
CISCO CP-CKEM-C REV K0 IFIED IP COLOR KEY EXPANSION MODULE 68-3144-02
2 BOLT PILLOW BLOCK BEARING UC208-24 1-1/2" SET SCREW
GATE VALVE 100 CWP RPC 3/4" CLASS 800 BODY A105 CR13 1975 PSI
WESTINGHOUSE FH93 OVERLOAD HEATER SERIES F TYPE A STYLE 179C319G23
DAYTON COPPER GLOBE FLOAT BALL 4" 4KU66
LINCOLN OEM REPLACEMENT METER PC BOARD L6687-1
NUMATICS VALVE BASE 229-682
DM SALLEN BRADLEY 1746-OV16 SLC 500 DC SINK OUTPUT MODULE 10-50 VDC LOT 2
DM SDODGE TAPER LOCK BUSHING 1.0" BORE 2-1/4" OD 1210x1 KW 117155
MRC ABEC-1 BALL BEARING DOUBLE ROW 30MM BORE 5306-C
DM SMASKA TAPER BUSHING 1210X1
RCA IVERSAL COMPACTFLASH EXTERNAL DRIVE PC2200P
DAYTON 1/4" MICRO MIST LUBRICATOR 150 PSIG 10 BAR 4ZL79
AMETEK NT2-24D PANALARM NOVATMULTI-TELECTRONIC AUDIBLE ALARM 24VDC
SIEMENS 1/2" POWERMITE VF 599 SERIES VALVE 2 WAY N.O. 59902048 / 010126
NORGREN RLG02J-DAP-CA00 PNEUMATIC CYLINDER 250 PSI MAX
GRAINGER 18C749 PRESSURE GAUGE 0-100 PSI 1/4" MNPT
DODGE GRID-LIGN COUPLING 3DG-H
1DM S3/4" NPT SQUARE HEAD STEEL PIPE PLUG LOT OF 14
RHINO 60W POWER SUPPLY 1.4-0.8A 100-240 VAC IN 2.5A 24 VDC OUT OPSP24-060S
ALLEN-BRADLEY LED LAMP MINIATURE BAYONET BASE RED 800T-N321R
DM SDODGE TAPER LOCK BUSHING 1" BORE 1.39" OD 1008x1 KW 117151
BAHCO 2-5/8" SNAP-ON CARBIDE TIPPED CT HOLE CUTTER SAW 3832-67
DM S SQUARE D DD280 OVERLOAD RELAY HEATER ELEMENT
SPIRAX SARCO 54749 VALVE MECHANISM KIT
60 PSI STAINLESS PRESSURE GAUGE LIQUID FILLED 3.5" DIAL 1/4" NPT 4CFJ8
100 PSI STAINLESS PRESSURE GAUGE LIQUID FILLED 3.5" DIAL 1/4" NPT 4CFJ9
DM SAMERICAN LOCK 0380210 ALUMINUM LOCK OUT L0802
JFW 3/8" SWING CHECK VALVE 200 CF8M SS
SYLVANIA SOFT WHITE COMPACT FLUORESCENT BULB 3000K 1200 LUMENS CF23EL/BR40
DM S GE F18DBX/835 18 WATT 2 PIN G24D-2 BASE BIAX 1200 LUMEN LAMP LOT OF 10
KILLARK HOSTILEITE EZA2 3/4" MOTING PENDANT
DIXON B-200 CAM / GROOVE FITTING
ALLEN BRADLEY STARTER 509-TOD SER D COIL 120VAC 2 HP
STEINER HEAVY DUTY 14 MIL GREY TRANSPARENT VINYL WELDING BLANKET 332-4X6
SKF 6310 BALL BEARING SINGLE ROW 50x110x27mm
TLV THERMOSTATIC STEAM QUICKTRAP CF8 450 PSIG PMA 300 PSIG PMO L21
FLEXFAB 90° SILICELBOW COOLANT HOSE 2" OD 7884-0175
DODGE TAPER LOCK BUSHING BORE 1/2" 2517 x 1/2 KEYWAY 119100
LOVEJOY 6J SLEEVE COUPLING FLANGE 7/8" BORE 36080
GENUINE HEWLETT PACKARD HP 51A Q7551A BLACK PRINTER CARTRIDGE LASERJET
GENUINE HEWLETT PACKARD HP 51A Q7551A BLACK PRINTER CARTRIDGE LASERJET
SWAGELOK SS-4-ST STAINLESS STREET TEE 1/4" MNPT X 1/4" FNPT X 1/4" FNPT
DM SSWAGELOK SS-4-ST STAINLESS STREET TEE 1/4" MNPT X 1/4" FNPT X 1/4" FNPT
SIEMENS SIMATIC S7 ET200M 6ES7 153-1AA03-0XB0
DM SSQUARE D 4.5" POWERPACT BLANK EXTENTION WIDE SIDE FILLER PLATE HLN-4BL
TRW BEARING ANGULAR CONTACT BEARING 30mm x 62mm x 15/16" mm 5206CF
AMF PARAGON EC-71-24 TIME CONTROL 100/120 VAC 45/60 Hz
ALLEN BRADLEY GUARDMASTER TROJAN 5 SAFETY SWITCH W/KEY 404K-T11118 RIGHT PORT
ROCKWOOD 470.26D FLOOR MOTED DOOR STOP 1-1/16" W X 3" H US26D 52HU30
MOTOROLA BLN6654D50 BIM BOARD RADIO COMMICATION INTERFACE
MOTOROLA BLN6825B48 CIRCUIT BOARD
SQUARE D 15 AMP CIRCUIT BREAKER 600 VAC 3 POLE 999315
CROSS 1A9251 FILTER 10 MICRON
LOVEJOY 6J SLEEVE COUPLING FLANGE 1" BORE 36082
INA 910 THRUST BALL BEARING SIZE MM 50x78x22
BACO T11ED01-A RED MUSHROOM HEAD E-STOP PUSHBUTTON PUSH TURN
SWAGELOK MS-IG-468 GAP INSPECTION GAGE 1/4"-3/8 1/2" TUBE R1NE10686S
DM SALLEN BRADLEY 800T-N26A AMBER LENS FOR 800T PILOT LIGHTS
CROUSE-HINDS CPP16 ARKTITE SERIES EXPLOSION-PROOF PLUG
SNEN V24J63 STSET 2C
SOUTHEAST THERMAL SYSTEMS 0-2300°F TEMPERATURE CONTROLLER SLC-3-0-2300K
BANNER OSBFAC OMNI BEAM FIBER OPTIC SENSOR 27402
DM SMORSE MPD4N05 DRILL BIT PART NO. 4XJ29
DM SALLEN BRADLEY Z-7182 SWITCH ASSEMBLY Z7182
DM SCISCO WS-G5484 1000BASE-SX GBIC MODULE 30-0759-02
DM SDM SCISCO WS-G5484 1000BASE-SX GBIC MODULE 30-0759-02
DM SAURORA MW-10KZ FEMALE ROD END BEARING
DM S DIAMOND C-3334CL-08-P COTTER TYPE CONNECTING LINK
DM S14303 TYVEK SHIRT LARGE 14303-050-3
EPIROC 177-9032-14-67, 39-20 DRILL BUTTON BIT 90509650 PIECE
LOVEJOY AL-225 RUBBER SPIDER INSERT
SMC ARM11AB2-R55-AZ MANIF MOT AIR REGULATOR 1/4" STRAIGHT 7-100 PSI
INOR HIGH PERFORMANCE ISOLATION TRANSMITTER 70ISP51012 / ISOPAQ-51P
ARMSTRONG C1999-1 BODY GASKET FOR PT204 PT206 PRESSURE POWERED PUMPS
ALLEN BRADLEY 1794-CE1 C01 EXTENDER CABLE 96971205-A01
MOORE INDUSTRIAL CONTROLS RANGING DEVICE KIT 14995-102
DIAMOND POWER GAUGE GLASS FOR MP 1050 WATER LEVEL GAUGE 100144-0112
CROUSE-HINDS GREEN PILOT LIGHT 120 VOLT MAX 3 WATTS N2PL10 J3
FISHER ROSEMOT DELTA V ANALOG INPUT KJ3002X1-BA1 12P0680X082 REV L
FISHER ROSEMOT DELTA V THERMOCOUPLE mV ASSY KJ3002X1-BG2 12P1731X082 REV H
FISHER ROSEMOT DELTA V THERMOCOUPLE mV KJ3002X1-BG2 12P1731X032 REV D
FISHER ROSEMOT DELTA V THERMOCOUPLE mV KJ3002X1-BG2 12P1731X022 REV C
SIEMENS SIMATIC S7 TS ADAPTER V5.2 6ES7972-0CA34-0XA0
YASKAWA DIGITAL OPERATOR REMOTE KEYPAD JVOP-130P WITH BRACKET ISCT21007
DM S WIKO HALOGEN 100W DOUBLE ENDED QUARTZ 130V Q100W/S 130V LOT OF 10
ELLIS WATTS 700W BAND HEATER KPA-HTR5000 120V 700W K0907-0104-8
(DM SPROFAX ESAB 33366 HIGH QUALITY COOPER ELECTRODE 30/80A FOR PT-23/27
PECO 40-110°F TEMPERATURE CONTROLLER TF115-017
PARKER TYPE AF SOLENOID COIL 120V AC 8.WATT AFEC05