1771-ASB价格杠杠的

1771-ASB价格杠杠的1771-ASB价格杠杠的

PLC可编程控制器的分类
    1）按I/O点数分类
    PLC所能接受的输入信号个数和输出信号个数分别称为PLC的输入点数和 输出点数。其输入、输出点数的数目之和称为PLC的输入/输出点数，简称I/O点数。I/O点数是选择PLC的重要依据之一。
    一般而言，PLC控制系统处理的I/O点数较多时，则控制关系比较复杂，用户要求的程序存储器容量也较大，要求PLC指令及其他功能比较多。按PLC输入、输出点数的多少可将PLC分为以下三类。
    （1）小型机
    小型PLC输入、输出总点数一般在256点以下，用户程序存储器容量在4K字左右。小型PLC的功能一般以开关量控制为主，适合单机控制和小型控制系统。
    （2）中型机
    中型PLC的输入、输出总点数在256~2048点之间，用户程序存储器容量达到8K字左右。中型机适用于组成多机系统和大型控制系统。

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厦门仲鑫航自动化设备有限公司

(3) 大型机
    大型PLC的输入、输出总点数载2084点以上，用户程序存储器容量达到16K字以上。大型机适用于组成分布式控制系统和整个工厂的集散控制网络。
    上述划分没有一个十分严格的界限，随着PLC技术的飞速发展，一些小型PLC也具备中型或大型PLC的功能，这也是PLC的发展趋势。
    2）按结构形式分类
    按照PLC的结构特点可分为整体式、模块式两大类。
    （1）整体式结构
    把PLC的CPU、存储器、输入/输出单元、电源等集成在一个基本单元中，其结构经凑，体积小，成本低，安装方便。基本单元上设有扩展端口，通过电缆与扩展单元相连，可配接特殊功能模块。微型和小型PLC一般为整体式结构，S7-200系列属整体式结构。
    （2）模块式结构
    模块式结构的PLC由一些模块单元构成，这些标准模块包括CPU模块、输入模块、输出模块、电源模块和各种特殊功能模块等，使用时将这些模块插在标准机架内即可。各模块功能是独立的，外形尺寸是统一的。模块式PLC的硬件组态方便灵活，装配和维修方便，易于扩展。
    目前，中、大型PLC多采用模块式结构形式，如西门子的S7-300和S7-400系列。

NEWPORT ELECTRONICS INFP-0-0-1-2-DC5-9SC4/INFP0012DC9SC4 PROCESS METER***XLNT***

GENERIC QGA603-11D ISS4 PCB ***XLNT***

LXE 6230 WIRELESS NARROW BAND ACCESS POINT 4400L20 TRANSCEIVER ***XLNT***

PARADYNE 3160-A2-211 AT&T ACCULINK ***XLNT***

IMC NETWORKS MCBASIC TP/FO MM850 ETHERNET MEDIA CONVERTER  ***NIB***

SQUARE D FAL32050 50A 240V CIRCUIT BREAKER ***XLNT***

IN SBCECMM REMOTE MANAGEMENT EXPANSION ADAPTER  ***NIB***

NIPPON 66-015/S1-101 HI-SPEED VOLTAGE UNIT ***XLNT***

ACCUMAX 90-32 CLUTCH/BRAKE CONTROL WITH OVER-ENERGIZATION ***XLNT***

TRIPP-LITE B042-016 16-PORT KVM SWITCH ***XLNT***

KRAMER VERTICAL INTERVAL SWITCHER VIS-5x4 / RS-232 ***XLNT***

ALLEN BRADLEY 171-0A16 B OUTPUT BLOCK MODULE ***XLNT***

OMRON F2LP-WK4-US METAL DETECTOR AMPLIFIER ***XLNT***

TEKTRONIX TDC DOWN CONVERTER OPT 3/11 ***XLNT***

RIETER 6/RR01000024/0927 423-7 CONTROL BOARD ***XLNT***

WESTINGHOUSE HMCP007C0C CIRCUIT BREAKER 7AMPS ***XLNT***

RIETER 0927 024/6 CONTROL BOARD ***XLNT***

FANUC A660-8004-T513/MS3106B28-21S(C)-ZN CABLE ***NNB***

PHILIPS M2636B EMONB MONITOR ****XLNT****

HONEYWELL NXPANA ALPHA-NUMERIC DISPLAY PANEL ***XLNT***

LUST LTI VF1204S,G10,FB,I6,M3/VF120 4S-G10-FB-I6-M3***XLNT***

POSITIVE CONTACT SCU-100 CONTACTOR ***XLNT***

HONEYWELL DC330E-KE-000-21-0A0000-20-0/UDC3300 TEMP CONTROLLER ***XLNT***

VEEDER ROOT 793506-260 PRODUCTION DATA CONTROL ***XLNT***

MONITRACE RAYCHEM 1001A MICROPROCESSOR TEMPERATURE CONTROLLER ***XLNT***

CROWCON ACE II AUTO CALIBRATOR 2 ***XLNT***

SMITH METER INC. K6FBP0 TEMPERATURE BATCH CONTROLLER ***XLNT***

REXROTH 3842522481/3842 522 481 SUSPENSION BRACKET ***NIB***

FESTO MFH-5/2-D-1-FR C SOLENOID VALVE WITH MANUAL OVERRIDE***XLNT***

MAGNEHELIC 2015 PRESSURE GAUGE (SOME SCRATCHES ON FACE) ***XLNT***

SMC AC20-GAI04 FILTER REGULATOR MODULAR (BROKEN GAUGE GLASS) ***XLNT***

BOSCH 0 810 091 222 DIRECTIONAL CONTROL VALVE ***XLNT***

HARTMANN AND LAMMLE THL55036700010/SVEB05SSK090278 HYDRAULIC ASSEMBLY ***NNB***

PARKER/REXROTH DR 10-5-52/315YM PRESSURE REDUCING VALVE ***XLNT***

MANNESMANN 00052714 HED 8 OA/12/200K14AS SOLENOID VALVE ***XLNT***

FLUTEC RV-16-01.1/0 HYDRAULIC CHECK VALVE ***NIB***

PARKER ERMETO ORIGINAL 740971/GE25SRA3C  (LOT OF 5) ***NIB***

FESTO FR-9-M3-B VERTEILER BLOCK (LOT OF 7) ****NIB****

WANDFLUH AMR672-2,5 PNEUMATIC VALVE ***XLNT***

SCHNEIDER AUTOMATION HOM-221 8POINT OUTPUT MODULE ***XLNT***

SQUARE D 8030 CRM-222R/ 8030-CRM-222R SY/MAX REMOTE INTERFACE MODULE ***XLNT***

CARLO GAVAZZI RJ1A23D30U RELAY 30-15A ***XLNT***

SIEMENS 14CSD32BF HEAVY DUTY MOTOR STARTER ***NIB***

PILZ PU3Z/UB 120VAC/UM 110-600VAC ***XLNT***

B&R X20 BC 8083 POWERLINK ETHERNET BUS MODULE ***XLNT***

B&R X20 BB 81 BUS MODULE SUPPLY ***NNB***

WIELAND 70.310.1640 MALE CONNECTOR 600V ***XLNT***

CHYRON 3A00557/4A02695/6A01775 FRAME BUFFER 3A00558/4A02696/6A01175 VRAM *XLNT*

HARTING HAN 6 E-M/ HAN6E-M CONNECTOR AND HOUSING ***XLNT***

PULSAFEEDER MCT220M3T PULSATROL SERIES 200 CONTROLLER ***XLNT***

NAMCO EE210-10446 PROXIMITY SWITCH CYLINDICATOR ***NIB***

SIEMENS 3VU1-600-0MH00/3VU16-00-0MH00/3VU1600-0MH00/3VU16000MH00 STARTER *XLNT*

GOULD SHAWMUT AJT50 AMP-TRAP TIME DELAY FUSE 50A 600VAC (LOT OF 2) ****XLNT****

SIEMENS 3VU1-600-0MG00/3VU1600-0MG00/3VU16000MG00 STARTER **XLNT**

WECO PRODUCTS CRB-RJ45-10/BNC FACE PLATE PROGRAM TERMINAL, DUPLEX ***XLNT***

BRUSH XL70F200 SEMICONDUCTOR FUSE 200A ***XLNT***

BUSS J60200-1STR FUSE HOLDER 200A ***XLNT***

ACME TRANSFORMER TA-83223 3000VA 60HZ SINGLE PHASE ***XLNT***

VACON P01100/R183B FREQUENCY CONVERTER ***XLNT***

MUUNTOSAHKO-TRAFOX TE 260VA MU1-MU2:230V COIL INDICATOR 1 PHASE 50/60HZ *XLNT*

SEMIKRON SKKD 162/16 RECTIFIER MODULE ***XLNT***

SEMIKRON SKKH 500/18 E THYRISTOR DIODE ***XLNT***

ALLEN BRADLEY 802267-251R/100-A12ND3  ELECTRIC BLOWER CONTACTOR ASSEMBLY *XLNT*

ALLEN BRADLEY 802267-251R/100-A12ND3  ELECTRIC BLOWER CONTACTOR ASSEMBLY *XLNT*

NORA 008249-1-1/64626-902/CP01167 REV D M7 3 PHASE CHOKE ***XLNT***

ENSTO KE 61.03/SFS2663 3 POLE LUG CONNECTOR ***XLNT***

SEMIKRON SKKH 92/16 E THYRISTOR DIODE ***XLNT***

SEMIKRON SKM 400GB 123 D IGBT MODULE ***XLNT***

SEMIKRON SKKH 72/18 E THYRISTOR DIODE ***XLNT***

EMECANIQUE LC1D80004P7 CONTACTOR 125A 230V ***XLNT***

LEM LA 305-S/SP1 13293 TRANSDUCER ***XLNT***

GENERIC 15133 350V|460V 30KVA 300Hz TRANSFORMER ***XLNT***

SAO ELECTRIC UZDC-B K18199-9/K18399-9 175A REACTOR ***XLNT***

SAO ELECTRIC UZDC-B M02313-9 350A REACTOR ***XLNT***

THOMAS & BETTS/ STEEL CITY LTX14-5 / 25060 TWO GANG OUTLET BOX ***NNB***

POWEREX/PRX F 4013-854  CD411299 9002 POWER BLOCK ****XLNT****

POWEREX KD421215A7 N58AA5  POWER MODULE***XLNT***

EMERSON CONTROL TECHNIQUES  2950-4207 PC BOARD BASE  ****XLNT****

EMERSON CONTROL TECHNIQUES  2950-4215 EXTENDER BOARD ****XLNT****

EMERSON CONTROL TECHNIQUES A 2950-4210 CONTROL CARD ****XLNT****

PANASONIC JT-785-M61 DATA COLLECTION COMPUTER ***NIB***

CTC COMPUTER TECH CORP P31-3C2-A6-2A3 TOUCH SCREEN ***XLNT***

CTC COMPUTER TECH CORP P31-3R3-A5-2A3 TOUCH SCREEN ***XLNT***

SIEMENS 3NE4-333/VDE 0636 / IEC 269 SITOR FUSE 450A 800V~/500V- ***NNB***

B&R X20CAOE61.0020 ETHERNET POWERLINK CABLE **NIB**

EMECANIQUE XS1 M08NA370 INDUCTIVE SENSOR 48VDC 200MA ***NIB***

EUROTHERM 808/L1/R1/R1/0/0/QS/(EZDC265)/GAL43/ TEMPERATURE CONTROL ***XLNT***

EUROTHERM 818S-RTD-RLGC-MOV5-FHD-0-0-0-SN-70... TEMPERATURE CONTROL **XLNT**

EUROTHERM 2408F/CC/VH/M1/XX/RR/FH/PB/XX/FRA/ TEMPERATURE CONTROLLER ***XLNT***

EUROTHERM 2408F/CC/VH/M1/V3/R4/FH/PB/XX/ENG/ TEMPERATURE CONTROLLER ***XLNT***