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。
DICKSON DATA TREND 6" DIGITAL TEMP HUMIDITY CHART RECORDER TH602 - PART ONLY
GE SIZE 00 ENCLOSED MOTOR STARTER 600 VAC MAX 120V COIL 1∅ 9 AMP CR206H100AHA
STAR LINEAR BALL BEARING 1.57" BORE 2.2" LENGTH 2.2" DEPTH 0668-040-00
BONNEY FORGE VALVE API 602 1/2" 800 CLASS 1975 W.P. GATE TYPE HL-11 FIG. NO.
MACK GUARDIAN 20QS420M OEM TEMPERED FLOAT TINT VENT GLASS MM80502B
PARKER 8Z(A)-V8AN-SS NEEDLE VALVE 316 STAINLESS STEEL 1/2" TUBE
DM S EATON CUTLER HAMMER HEATING ELEMENT H
0-100 PSI SQUARE ROOT
ALLEN BRADLEY STACKLIGHT WITH 855E-BCB BASE, 855E-10N5 AMBER LIGHT, THORN
DM SALLEN BRADLEY STACKLIGHT WITH 855E-BCB BASE, 855E-10N5 AMBER LIGHT, THORN
WIKA 1/4" NPT PRESSURE GAUGE 5000 PSI MAX 50233581
SAMSG SSD 850 EVO mSATA 500GB MZ-M5E500 MZMLN500HMJP
ARIEL KB-2458-U VALVE KIT 127 CT
AGIE ADD-04B ANALOG DIGITAL DRIVER BOARD 615.971.9
EMERSON SOLA 4.2 AMP POWER SUPPLY 115/230 VAC 24 VDC SDP 4-24-100RT
LSI LS2 SAS 9200-8e PCI 2 X8 H3-25260-02B CONTROLLER CARD SAS9200
DM STELEMECANIQUE ZB2-BE102 .CONTACT BLOCKS
DM STELEMECANIQUE ZB2-BE102 .CONTACT BLOCKS
DM SMARKEM 904A HEATER 0230942 28V
DM SWESTINGHOUSE H93 OVERLOAD HEATER TYPE A STYLE 5040972G23
SQUARE D PILOT LIGHT 24-28 VOLT AC DC RED LAMP 757 9001KM35
HUBBELL SIZE 3 DC CONTACT KIT 59672-005
PARKER 15R111FB PRESSURE REGULATOR PMAX 250 PSI TMAX=125ºF 1/4"
PEPPERL FUCHS NCB5-18GM40-N0 INDUCTIVE PROXMITY SENSOR 181108
BROOKS INSTRUMENT SHO-RATE RANGE 10 TO 300 14.70 PSIGLASS TUBE FLOW METER
CROMPTON / WESTINGHOUSE 549-15 PANEL MOT ELAPSED TIME METER
SMC 250 PSI PNEUMATIC CYLINDER NCDMC106-0100
BECKHOFF KL3052 2 x CHANNEL ANALOG INPUT TERMINAL 50 OHM
HIWIN LINEAR GUIDEWAY BLOCK 75 x 49 x 23 HGW15C
FATEK FBs-2DA PROGRAMMABLE CONTROLLER
SMC 24 VDC VALVE 0.2-0.7MPa 1.75 WATT VP544-5DZ1-A
(DM SSANPIPER WARREN RUPP SERIES HDB2 FLANGE GASKETS 360-049-603
MOXA TRANSIO A52 SERIES SMART BI-DIRECTIONAL CONVERTER RS-232 TO RS-422/485
5¼" POLY-DISC COUPLING DISC 008033
EATON CUTLER HAMMER EHD1100 1 POLE 100 AMP EHD BREAKER 277VAC 126VDC
SPRAYING SYSTEMS 6815-1/2 PRESSURE RELIEF VALVE 300 PSI
KEYENCE 8m EXTENSION CABLE OP-6308
DM S BULBRITE ENERGY WIF18D835 18W QUAD 3500K 2 PIN G24D-2 T4 10
ASCO 1/4" NPT 2 WAY BRASS SOLENOID VALVE 120 VAC 8262H210 6WTV5
SANDVIK 4-3/8" CARBIDE TIPPED CT HOLE CUTTER SAW
AMETEK NOVATELECTRONIC AUDIBLE HORN .25A 12 VDC NT2-12D
ASCO 8262D23 SOLENOID VALVE 2 WAY VALVE NC 245 PSI 120V AC 1/4" 9 WATTS
(DM SALLEN BRADLEY FLEX I/O MODULES 10-31.2 VDC SERIES A 1794-OB16, 1794-IB16
WATLOW TEMPERATURE CONTROLLER 115 VAC 50/60 HZ 71-03-02
1DM SSYLVANIA 26W COMPACT FLUORESCENT BULB 2 PIN CF26DD/841/ECO LOT OF 13
DM S GE 13W COMPACT FLUORESCENT LAMP 2 PIN GX23 F13BX/841/ECO OF 10
DM S20865 GE PRECISE MR16 LAMP 50W 12V 55º Q50MR16C/CG55 FVN/CG LOT OF 7
SIEMENS SINEC HI COMMICATION PROCESSOR 505-CP1434TF
TORK ASTRONOMIC 7 DAY INDOOR / OUTDOOR TIME SWITCH EWZ201/EW201B/E201B/EWZ201C
DM SHP HP 81 LIGHT MAGENTA DYE 680ml INK CARTRIDGE PINK C4935A C5071A LOT 2
ALLEN BRADLEY 5 SEC. DELAY SOLID STATE TIMER 700 RTC40Z050U24
IDC SELECT CHAIN # 5016 CHAIN COUPLING IDC 50 CHAIN
DM SCRC 1LB 3OZ CAN ELECTRICAL PARTS DEGREASER 02018
SIEMENS SIMATIC S7 INPUT MODULE 6ES7 421-1BL01-0AA0
JUSTRITE SAFETY FILL VENT FOR 2" BG OPENING AUTO VACUUM/PRESSURE RELIEF
BROWNING VF2B-220S 2 BOLT FLANGE MOT BEARING 1-1/4"
CROUSE HINDS CHICO A19 PX SEALING COMPOD INTRAPAK 5 PACKAGES
ULINE 110°F TO 930°F VARIABLE TEMPERATURE HEAT G H-915
WOODHEAD / MOLEX 111 300W SUPER PROTEX HANDLAMP W/ WIRE GUARD 1301020145
TIMEKEN TAPERED ROLLER BEARING C45290
DM PEC GS 120-1 CLC SINGLE ROW ROLLER CHAIN LINKS
DM EC GS 120-1 OLSET ROLLER CHAIN
LAPRO 21R874 VAPOR TIGHT 150 WATT INCANDESCENT FIXTURE WITH GUARD
GOULD / MODICON 115 VAC OUTPUT MODLE AS-B350-001 SERIES 34H
TLV THERMONOUS TRAP 900 PSIG / 800F 1/2" LEX3N-TZ
DM S TLV THERMONOUS TRAP 900 PSIG / 800F 1/2" LEX3N-TZ
GREENLEAF TK-03935 TE-UP KIT 534545
FAG RADIAL BALL BEARING 6310.2ZR.C3
FMC LINK BELT 7/8" BORE MOTED BALL BEARING 4-BOLT FLANGE F3-U214H
SEALMASTER 7/8" BORE PILLOW BLOCK BALL BEARING 2-BOLT NP10C
VEEDER-ROOT PULSE TRANSMITTER 187180-027 300 MAX RPM
CHICAGO LATROBE 65023 #9 65021 #8 65017 #7 TYPE 800 SCREW EXTRACTOR
PALL CORPORATION HYDRAULIC FILTER HC7500SKN4H
DM S ALLEN BRADLEY 1746-OB16 SERIES D SLC 500 OUTPUT MODULE 16 OUTPUTS 10-50VDC
DM S ALLEN BRADLEY 1746-OB16 SERIES D SLC 500 OUTPUT MODULE 16 OUTPUTS 10-50VDC
ROCKWOOD 122 X 70C STAINLESS PULL PLATE AND HANDLE 4" X 16" WITH HARDWARE
DM SFIREPRO V4900 1GB DP-DVI GRAPHICS CARD
· 1 GB
ALLEN BRADLEY 1492- IFM20F-F24-2 SERIES A F INTERFACE MODULE 1492-CABLE025P
MOXA REV 2.2 ETHER DEVICE 5 PORT MANAGAGED ETHERNET SWITCH EDS-305
ASCO 3/8" 2 WAY VALVE 240 VAC 150 PSI 10.1 WATT 8210G93
PENN CONTROLS SINGLE POLE PRESSURE CONTROL 120-600V AC/DC 2303
TORK 24-HOUR MECHANICAL TIME SWITCH IN STEEL CASE 120 VAC MODEL 7200 - FLAW
ESP DIGITAL QC AC POWER LINE FILTER D5131NT 120VAC 15 AMP
FISHER ROSEMOT 8-WIDE CARRIER W/ FIELDBUS H1 12P0818X072
KECKLEY 1" Y-STRAINER PIPE 600 WCB STYLE SB-7
DYMO 98-919W10020-000 WIRELESS INTERACTIVE GRAPHICS TABLET MIMIOPAD
ENCORE D10-7300-MC LEVER HANDLE DRAIN
POWER-3.0 AMP POWER SUPPLY 120/240 VAC 5 VDC HB5-3/-A
WIREM J06BOB PLUG IN OUTLET CENTER IT 6 RECEPTACLE POWER STRIP 120VAC 15A
COLUMBIA ELECTRIC TONG TEST AMMETER AC/DC 200 A RANGE TYPE AX 26329C
SENSOR KILLARK HKB EXPLOSION PROOF NEMA 4 ENCLOSURE ASI A02-A-2-010-Z-G
NETAPP CONTROLLER XYRATEX 82899-03 106-00101CO X5612A-R5 78625-01 AT-FCX
SKF RADIAL DEEP GROOVE BALL BEARING 6409
DM S SKF RADIAL DEEP GROOVE BALL BEARING 6409
HARRIS 447-200 OXYGEN REGULATOR 200 PSI MAX
BREWER MACHINE GEAR P1B FLAT BELT IDLER PULLEY
SEALMASTER 1-7/16" FLANGE MOT BALL BEARING SFTMH-23 711629
SIEMENS SITOP PSE200U SELECTIVITY MODULE 24VDC 6EP 1961-2BA21
SWAGELOK SS-1210-2-8RT STAINLESS MALE ELBOW 3/4" TUBE OD X 1/2" MNPT
SWAGELOK SS-1210-2-12RT STAINLESS MALE ELBOW 3/4" TUBE OD X 3/4" MNPT
SWAGELOK SS-16-TA-1-16 MALE TUBE ADAPTER 1" TUBE OD X 1" MNPT
SPEAKMAN SI-FLO PISTON IT K-9200 093450
DM SSPEAKMAN SI-FLO PISTON IT K-9200 093450
DM S FERRAZ SHAWMUT ATMR3-1/2 CLASS CC FUSE 3-1/2 AMPS 600 VOLTS OF 10
ARIEL KB-2232-S COMPRESSOR SUCTION VALVE REBUILD KIT 190CKT,NYX
ARIEL KB-5617-T COMPRESSOR SUCTION VALVE REBUILD KIT 190CKT,NYX
DM SCUTLER HAMMER H2013B THERMAL OVERLOADS DOM 18.7-30.7 AMPS
DM SDM SCUTLER HAMMER H2013B THERMAL OVERLOADS DOM 18.7-30.7 AMPS
SIEMENS U-MCS 500-699701 FIRE ALARM STAND ALSTROBE
DM SBACO CONTROLS T10SB20-3EAGL 30MM GREEN LED PILOT LIGHT 130V
DM SBACO CONTROLS T11AA01-3ER11 30MM RED PUSH BUTTON 1-NO 1-NC
HEWLETT PACKARD HP NC 364T HSTNS-BN26 GIGABIT SERVER 436431-001 435506-00
JMF COMPANY 1/4" x 50' REFRIGERATION TUBE
SIXNET VERSATRAK VT A2 22E 24P RTU REMOTE TERMINAL IT 30 VDC
MARTIN 18H2150-3/4 BUSHING BORE TIMING BELT PULLEY 18 TOOTH 3/4" BORE
WESTINGHOUSE SIZE 1 MOTOR STARTER 27 AMP 110/120 VAC COIL A200MICAC
TOSHIBA 1.6 KVA TRANSISTOR INVERTER DRIVE 3Ø 460 VAC VFS7-4007UPL
PROMISE TECHNOLOGY CD ROM DRIVE SUPER SWAP TLA 1B-0E-0G-00-03-00 3892D533
BRADY PRINZING LOCK-OUTS (DM S T220 (1) Y879539 (DM S PADLOCK (DM S BREAKER LOCKS
TSUBAKI 6' ROLLER CHAIN 192 LINKS RS50 (TW) / RS50
WHITE-RODGERSLOW VOLTAGE LEVEL TEMP SILENT OPERATOR REGULATOR 24A05Z-1
TB WOODS SYNCH SPROCKET P525M15/P525M15JA
11) CLIPPER FLEXCO 2 G NY GALVANIZED NYLOSTEEL HOOKS 02155 LOT OF 11
11) CLIPPER NO. 4 GALVANIZED NYLOSTEEL HOOKS 74011 LOT OF 11
TB WOODS SYNCHRONOUS PLUS SPROCKET .59" BELT WIDTH .19" PITCH P52-5M-15-JA
SPEEDAIRE 3/4" REGULATOR 300 PSIG IN 150 PSIG OUTLET 175ºF 4ZM23
MARTIN 3020 TAPER LOCK BUSHING 1-3/8" BORE 3020 1-3/8
DRAGON 10M VALVE 6000 PSI NEEDLE VALVE 3/4" FNPT 10M 0111 14451LVH
ASHCROFT 1259 OIL FILLED 100 PSI PRESSURE GAUGE 4.5" FACE 1/2" LOWER CONNE
CISCO VIRTUALZATION EXPERIENCE CLIENT 2200 SERIES CVXC-2212-W