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。
Clear-com Intercom Systems ICS-2110 Display Panel Station for Matrix Plus 3
DELL 0CU409 MOTHERBOARD 1.8GHz INTEL DUAL CORE SLA8Z CPU 4GB RAM H/S FAN
HP 586968-001 MOTHERBOARD INTEL W3520 XEON SLBEW CPU
CHEROKEE SP525-Y02A 950W POWER SUPPLY 90948208
NVISION DA502 AES DUAL 1X4 FANOUT DA EM0327-00
NVISION NV1030 A to D Converter Module Card EM0032-02
CIRCUIT BOARD VEP83525A FOR Panasonic AJ-HD2700P HD2700 HD Digital D5 VCR/VTR
CIRCUIT BOARD VEP83524A FOR Panasonic AJ-HD2700P HD2700 HD Digital D5 VCR/VTR
CIRCUIT BOARD VEP83366B FOR Panasonic AJ-HD2700P HD2700 HD Digital D5 VCR/VTR
CIRCUIT BOARD VEP83365B FOR Panasonic AJ-HD2700P HD2700 HD Digital D5 VCR/VTR
CIRCUIT BOARD VEP83185B FOR Panasonic AJ-HD2700P HD2700 HD Digital D5 VCR/VTR
CIRCUIT BOARD VEP83382B FOR Panasonic AJ-HD2700P HD2700 HD Digital D5 VCR/VTR
Cisco 4018231 4-Port Gbe SFP 4-Port RJ-45 10/100 Module 4018155-B For RFGW-1-D
ASUS P4SD-VL MOTHERBOARD 3.2GHz INTEL PENTIUM 4 SL7E5 CPU 2GB RAM H/S FAN
ASUS P4GV-LA MOTHERBOARD 2.8GHz INTEL PENTIUM 4 SL7E5 CPU256MB RAM H/S FAN
ASUS PTGD1-LA MOTHERBOARD 3.06GHz INTEL SL8ZZ CPU 512MB RAM H/S/FAN
CIRCUIT BOARD VEP83382A FOR Panasonic AJ-HD2700P HD2700 HD Digital D5 VCR/VTR
NVISION NV1045 20-Bit AES3 D to A Converter Module Card
Aurora AT3309L Transmitter various channels
Kramer VS-5x5 Video Audio Matrix Switcher
SP-MSM-02 Dot Hill DC Power Supply module
DELL 03E852 mPGA478B MOTHERBOARD 192MB RAM
Dell 03E852 MOTHERBOARD 2GHz INTEL CELERON SL6SW CPU H/S
MSI H55M-E23 MS-7636 VER 3.1 SOCKET 1156 HDMI MOTHERBOARD
DELL 0200DY Motherboard 3.0GHz INTEL CORE 2 DUO SLB9J CPU 4GB RAM
MATSONIC MS9158E MOTHERBOARD WITH 2.40GHz PENTIUM 4 CPU
NORTEL NT0H41AA LGF9U06BAA OPTERA 80 OM5100/5200 SHLF 9.1
NORTEL NT0H40BC LGF9K05BAB / LGF9K05BAA OM5100/5200 OCM 2.5GBPS
HP 586766-002 MOTHERBOARD 2.93GHz INTEL XEON SLBEX CPU
HP 586766-002 MOTHERBOARD 2.93GHz INTEL XEON SLBEX CPU
DELL 0D480K INTEL DUAL L5420 XEON SERVER MOTHERBOARD DA0S59MB8D0
DELL 0U7077 MOTHERBOARDINTEL PENTIUM 4 SL723 CPU4GB RAM
HITRON HVP350-490 350W SWITCHING POWER SUPPLY
Polycom CX5500 ified Video Conference Station System CODEC 2201-64761-001
Power-HBB 15-1.5-A Power Supply 120/240v-ac 1.7a Amp 12v-dc
Allied Motion DC motor KMX-01658023 with Tuthill Pump K11754
Cisco 15454-OSCM OPTICAL SERVICE MODULE WMOTCYEAAA
LG WASHER CONTROL BOARD WITH KNOB EBR62267105
Motorola 493307-003 QAM3-IB-DCII-IF QAM Module for the MPS Chassis
Ixia Catapult systems module card SA-9361C, 9361
Telica Plexus 9000 OCTAL DS3 STS-1 I/O MODULE 89-0383-A
Ixia / Catapult systems module card 9100 / 9011
Ixia / Catapult systems module card 9101 / 9019
Ixia / Catapult systems module card SA-9200F / 9200-0225
VEP89137A-1 S MOTHER ASSY PCB FOR Panasonic AJ-HD3700
VEP89136A-1 L MOTHER ASSY PCB FOR Panasonic AJ-HD3700
MERZ SWITCH 3PH 600V 100 AMPS ZERO POSITION SWITCH #Z756/630
DELL 018D1Y FSWB1333 MOTHERBOARD INTEL CELERON SLAFZ 2GB RAM
DELL 018D1Y FSWB1333 MOTHERBOARD INTEL CELERON SLAFZ 2GB RAM
DELL 0CU409 MOTHERBOARD SLA8Z 1.80GHz DUAL-CORE PENTIUM 4GB RAM H/S FAN
HP 460839-002 MOTHERBOARD 2.66GHz INTEL XEON SLBEW CPU 4GB RAM
DELL 0CU409 MOTHERBOARD 1.80GHz INTEL PENTIUM DUAL-CORE SLA8Z CPU
DELL 0K5148 MOTHERBOARD 2.4GHz INTEL CELERON SL6VU CPU
DELL 0JC474 C89706-402 MOTHERBOARD 2.8GHz INTEL PENTIUM 4 SL8PP CPU 1GB RAM
Dell 0M5DCD MOTHERBOARD WITH i3-2120 CPU AND 4GB RAM
HP 460839-002 MOTHERBOARD 2.93GHz INTEL XEON SLBEX CPU H/S FAN
Ascom Energy Systems 5CPD45012100-05A Power Supply for Cisco 34-1562-01
NetApp NA-111-01287B6 Disk Array Controller NA-111-00846D4
HP AAHD2-HY REV 1.03 MOTHERBOARDAMD A4 3400 CPUHSFAN
ECS 945G-M3 MOTHERBOARD 2.8GHz INTEL PENTIUM 4 SL7J5 H/S FAN
ORTEL 8009A 110V MAIN POWER SUPPLY
ORTEL 8009B 110V MAIN POWER SUPPLY
ENERMAX MODU82 EMD625AWT 625W POWER SUPPLY
SPIRENT Commications Eltek Valere S1250C1-VV 100-240V 15A Power Supply
Synchronous Group Power Supply CS-PS-110
FCI 10130795-4050LF 25Gbps QSFP28 to 4XSFP28 5 METERS 30AWG CABLE ASSEMBLY
JDSU RPM-2000 PathTrak Return Path Spectrum Analyzer Module RPM2000
BEKOMAT 2000429 CONDENSATE CONTROLLER KA10LC0A0
ARRIS AURORA BP3104C-AS Optical Back Plate
LECO Corp Mass Defect Control 666-262D010, 666-262E-E1
CABLEVISTA CV1111 HOT SWAP POWER SUPPLY PS3/5/12V300W-03
CISCO DPSN-525AP POWER SUPPLY 341-0393-02
CATAPULT COMMICATIONS 19051-1957 POWER PCI NETWORK BOARD/CARD 512MB RAM
Dell 00W912 C14053-204 SOCKET 478 DESKTOP Motherboard WITH 2.4GHz P4 1GB RAM
DELL 0M5DCD, MIH61R 10097-1 MOTHERBOARD 2.66GHz CORE 2 QUAD CPU
DELL 0DR845 Motherboard 2.2GHz INTEL CORE 2 DUO SLA95 CPU
ASUS P5LD2 Motherboard 3.0GHz INTEL PENTIUM D CPU SL94R 2GB RAM H/S FAN
Antec TruePower Quattro TPQ-1000 Semi-Modular Power Supply w/Cables
Brocade NetIron MLX NI-MLX-1GX48-T-A 48-Port MRJ-21 Gigabit Switching Module
IBMVXI ELECTRONICS WP2272 360W SERVER POWER SUPPLY 073-20728-01
HP 462798-001 M2N68-LA REV 3.02 Motherboard 2.9 GHz AMD ADX245OCK23GQ CPU
GIGABYTE GA-K8NF-9 MOTHERBOARD 2GHz AMD ATHLON X2 ADA3800DAA5CD CPU 2GB RAM
HP 380356-001 MOTHERBOARD 3.2GHz INTEL PENTIUM 4 SL8Q6 CPU 1G RAM
Dialogic/Vertical Commications D/120JCT-LS PCI CARD
AIR-CON C-DA52 PNEUMATIC ACTUATOR
CRYSTAL VISION DDA208B ISS 2 dual SDI/ASI distribution amplifier
Hard Drive
HP 98625B DISC INTERFACE CARD
MRV EM316EFRMAHSH-R FIBER DRIVER MODULE CARD
Symmetricom 090-93121-01 TC1000 DTI IOC Time Creator Card
NATIONAL OPTRONICS CLARITY INTERFACE BOARD INTERFACE CCA 33430-REV B
Dolby Cat. 611 REV. 3 Board for a DA20 or CP 500 Cinema Stereo DAP
Dolby Cat. No. 670 REV. 2 Video ACQ board for CP500 Cinema Sod Processor
Sony RP-101 SYSTEM BOARD A-8315-285-A For DSR-80 Series DVCAM
IXIA XR100 VOIP PROBE
BIMBA ULTRAN US-027 PNEUMATIC RODLESS CYCLINDER
HP 5188-8566, ASUS IPILP-LC REV: 1.04 MOTHERBOARD
Dell 03T237 Motherboard INTEL PENTIUM 4 SL664 CPU
Scientific Atlanta 741829 PRISMA DT AC POWER SUPPLY MODEL 2590
03E078 Dell Optiplex System Board P4 Agp CPU 1 GB RAM
Dell 0M5DCD Motherboard Intel CORE i3-2120 SR05Y CPU
Intel A49507-903, 4000725 Motherboard WITH 1.7GHz PENTIUM 4 AND 256MB RAM
Intel A49507-903, 4000725 Motherboard WITH 1.7GHz PENTIUM 4 AND 256MB RAM
Lenovo 71Y5975 Motherboard
Lenovo 71Y5975 Motherboard
HP 460839-002 MOTHERBOARD 2.93GHz INTEL XEON SLBEX CPU
Dell 042P49 Motherboard WITH 3.30GHz I3-3220 H/S FAN
Dell 00T606 Motherboard 2.4GHz INTEL PENTIUM 4 SL6RZ CPU
0 Allen Bradley 1492-CB1 Circuit Breaker VARIOUS AMPS
Dot Hill SP-DCM-01 Power Input Module
DELL 0G1548 MOTHERBOARD 2.66GHz INTEL PENTIUM 4 SL6PF CPU 2.5GB RAM
VECIMA CABLEVISTA CV1120BB 2-CHANNEL NTSC BNC ANALOG OUTPUT MODULE
DELL 0PU052 MOTHERBOARD CORE 2 DUO SLA9X CPU 2GB RAM
DELL 0GDG8Y MOTHERBOARD WITH INTEL PENTIUM SR05S CPU
DELL 0WT5R3 MOTHERBOARD 2x 2.4GHz INTEL XEON SLBV4 CPU 72GB RAM DUAL H/S's
GVG 066871 TEN-XL POWER SUPPLY 066871-10B
Samsg Washer Control Board DC92-01311B
GRASS VALLEY 8900 FRAME MONITOR 671-4802-00E
AJA K3G- 103354 KONA 3G External Video Editing Breakout 1U Rackmot
LG Refrigerator Control Board EBR41531307
KENMORE Refrigerator Control Board EBR83845006
HP 460839-002 MOTHERBOARD 2.53GHz INTEL XEON SLBGC CPU
INTEL D845GVFN/D845PEMY, C77646-104 MOTHERBOARD 2.53GHz CELERON D 256MB RAM
EMachines 132872, IMPERIAL GLVE 2002029 Motherboard 1.80GHz CELERON 512 RAM
DELL 0200DY Motherboard 3.0GHz INTEL CORE 2 DUO SLB9J CPU
Dell 097UJY Motherboard WITH PENTIUM III CPU 256 MB RAM
Lg Washer Display Control Board EBR62267122
HP 381029-001 Motherboard WITH 2.80GHz PENTIUM 4
Dell 0H8052 Socket 775 Motherboard Intel 2.8Ghz PENTIUM 4 CPU
LG REFRIGERATOR ELECTRONIC CONTROL BOARD EBR78940602
DELL 09KPNV MOTHERBOARD INTEL XEON 2.80 GHZ CPU