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
Telemecanique GSKA24VACDC Preventa Safety Relay
Telemecanique GSKA24VACDC Preventa Safety Relay
Pilz 540050 RFiD Safety Switch PSEN cs1.1p
ListingRiese RS-WAR2 Interval Time Delay Relay 24V AC/DC
ListingRiese AR.0501.2106 Time Delay Relay RS-AR1 24V AC/DC
Allen-Bradley 1203-GD1 Communications Module Remote I/O
Allen-Bradley 1203-GD1 Communications Module Remote I/O
Tele Controls R2X20 Time Delay Relay
Chore-Time 24701 Temperature Transmitter
Omron G9SB-2002-A Safety Relay 24V
Banner EM-T-7A Safety Relay
Banner EM-T-7A Safety Relay
Danaher Kollmorgen BCL-02806-A01 Servo Amplifier
AEG SIM203 Analog Simulator 7628-042.249628
Riese SAFE 2.2 Safety Relay AR.9657.2010 24V AC/DC
Omron G9SX-AD322-T15-RT Safety Relay 24VDC
Beckman Coulter 10mm Optical Glass Cuvettes 75152
Allen-Bradley 440N-S32013 SIPHA Safety Relay 24V
Pilz 750104 PNOZ s4 Safety Relay 24VDC
Omron C200H-ID002 Programmable Controller
Emerson 03-777881-04 High Voltage Isolator Board
GE Fanuc A16B-2200-030 Zero C Axis Board
Diamond Products 04837 Heavy Duty Wet Core Bore Bit 1-1/8"
Riese RS-LZF Time Delay Relay AR.0257.5205 230VAC
Microwave Associates 8P62-S005 Waveguide
Telemotive E12102-2 Microcomputer Module
Omega Engineering DP63600-DC-GN Digital Panel Meter
Allen-Bradley 440R-W23217 Safety Relay MSR329P
Tesch F124x01 Safety Relay 07400027
Schmersal 101170056 Safety Relay FWS1205C 24VDC
Riese RS-TMSV-2 Safety Relay 24V
Riese RS-TMSA-2 Safety Relay AR.6200.5000 230VAC
Ludlum Measurements 5176-017 Board
Pilz 570000 PSEN me1S/1AS Mechanical Safety Switch 24V AC/DC
STI 44531-0010 Control Unit 24V AC/DC
ABB ASEA 2668 184-319/3 Control Board
IFM G1501S Safety Relay 24VDC
Precision Electronics D20620 Control Board
Eaton XTCEXTED100C11A IEC Timer Module
Banner ES-UA-5A Safety Relay
BEI Motion Systems 924-01002-4163 Encoder
Banner IM-T-9A Safety Relay
Omron G9SB-3012-A Safety Relay 24V AC/DC
Pilz 472214 PA-1SK Safety Relay PA-1SK/3S/FBM2.5M
Pheonix Contact 2811954 Power Supply MCR-PS-230AC/24DC/650
Pilz 774059 Safety Relay PNOZ X7 24V AC/DC
Riese RS-NR-4 Safety Relay AR.6003.5661 230VAC
Sprecher Schuh L10-NN030P3 Med Case Switch
ListingJokab JSBT4 Safety Relay 115VAC
ListingIFM DA101S Safety Standstill Monitor
Deltron Emcon CO467841U020 EMC Filter for 690PB Inverters
Siemens 6ES5535-3MA12 Communications Processor
Schleicher KSY31 Timer Relay 13512849 24V
Schleicher KSP12 Relay 15603440-264 220V
Allen-Bradley 440R-E23097 Safety Relay MSR132EP 24V
Schmersal AES1135 Safety Controller 24VDC
Fanuc A14B-0061-B112-01 Input Unit
CA Products 7330 LS1/8 COM Assembly PCB
Allen-Bradley 700-RTC02200U1 Solid State Timing Relay
Square D 8932 Type GSP Safety Relay 220VAC
Riese RS-SDS 30ms Time Delay Relay AR.1404.2105
Pilz 774607 PNOZ X2.2 Safety Relay 24V
Pilz 837290 S3UM/UB Safety Relay 24V
K Systems Corp KSLC-90 Pneumatic Sensor Level Control
Sun 371-4017-01 Ethernet Module SG-XPCIE2FCGBE-Q-Z
Islatran LI-101 AC Power Integrator 120V
Eaton ECS700SC Current Switch
BK Precision DP-31 Logic Pulsers
Banner ES-GA-5A Safety Relay
Omron G3PB-435B-2H-VD Solid State Relay 12-24VDC
AEG SIM216 Simulator Module 16 Channel
Pilz 774585 PZE X4 Safety Relay 24VDC
Schmersal AZ 415-22ZPK Safety Interlock Switch
Lemo DCE.91.165.BVCM Turret Head
Banner GM-FA-10J Safety Relay 24V AC/DC
Siemens 3RP1555-1AP30 Time Delay Relay
Pilz 750107 PNOZ s7 Safety Relay 24VDC
Pilz 750107 PNOZ s7 Safety Relay 24VDC
Watlow 30CKSUG120D Thermocouple
STI 70111-1000 MiniSafe MS46-20-260-X Light Curtain Transmitter
D 0041438 Emergency Stop Relay BN5930.48 24VDC
Tesch E67.3x102 Safety Relay 05000224 230VAC
Computer Technology Corp CSA-5201 Control Board
Pheonix Contact 2963734 Safety Relay PSR-SCP-24UC/URM4/5X1/2X2
Hercules 2411-5K-SPCT Encoder
Allen-Bradley 440R-EM4R2 Safety Relay GSR EM 24VDC
Allen-Bradley 440R-EM4R2 Safety Relay GSR EM 24VDC
United Electric E122-M9BB Temperature Switch 540-1000F
Guardscan PSSU/2 Control Unit
Fanuc A20B-2001-0042 Multiplexer PCB Board
STI GuardMaster MSS-3FM Safety Switch 44501-05
Oriental Motor ASD13A-A Motor Drive
ABB OVRTC48 Surge Protector Module
Setra Systems 264150CLD11T1G Pressure Transducer, 0-5000 PA, 4-20 mA
Charles Wescom 3634-35 Dataport Channel Unit
Allen-Bradley 1606-XLDNET4 Power Supply
AEG PC-A984-120 CPU Module
Oriental Motor CC36T1 Terminal Block Conversion Unit
Ingersoll Rand F3 Board for Handpunch Time Clock 01000-7200
Rosemount Analytical 3D39307H01 Power Control Module
Allen-Bradley 700DC-P600Z2 DC Relay
Yaskawa CMPC-CM34C-3 Motionpack 34 Servo Controller
Omron G7TC-OC08 Relay Module
Pilz 751177 s7.2C Safety Relay
Pilz 773722 PNOZ mc4p Safety Relay
Electroscale 30-013519 Circuit Board 09-0001
Siemens 6ES5544-3UA11 Communication Processor Module
Hildebrandt Co SM-211 Stepper Motor Controller
Lot of 100 Panasonic 0.22F Electric Double Layer G Capacitor 5.5V EECS0HD224V
Conoflow ITT 975-30161 Regulator Filter For Hiller Model 10 Actuator
General Electric S711F2FT-RST1 Data Transceiver
Allen-Bradley 440R-S23174 Safety Relay CU4
Ele International MM700 Series Analog Input Expansion Modules
Intech Advanced Analog A-440 Operational Amplifier
Pilz 773536 PNOZ mo4p Safety Relay
Gai Tronics Femco WBA3987 Amplifier Card PCB
Allen Bradley 1409-BOBD Arcing Ground Fault Relay 1-6 AMP
Allen-Bradley 42305-053-51 Control Board for 1305 Drive
Supco 14265 TAP4 Probe Assembly
Microscan 61-000123-01 MS-Connect 210 Cable
Red Lion Controls CUB7T020 Electronic Timer
Pheonix Contact 2868606 Step Diode
Allen-Bradley X871C-D1NP8-E2 Inductive Proximity Sensor
Allen-Bradley 440R-S23174 Safety Relay CU4 10s 24V
GE Fanuc A16B-1211-0150/13D Main CPU Processor Board
Allen-Bradley 634173-90 Contact Monitor Board
Teledyne 318-00066 Axial Quartz Purge Tube
Honeywell R7195B1021 Motor Positioner
Telemecanique MPC-007 Programmable Controller Type MPC-RO08
WMW Technologies LDL-1200 Live-Dead-Live Verifier
Teledyne TES-2748TT350CD Quick Stem 1.75" Diameter
Omron C200H-IM211 Controller