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6ES5450-8FA12
PLC向开放性发展
早期的PLC缺点之一是它的软、硬件体系结构是封闭而不是开放的，如专用总线、通讯网络及协议、I/O模块更互不通用，甚至连机架、电源模板亦各不相同，编程语言之一的梯形图名称虽一致，但组态、寻址、语言结构均不一致，因此，几乎各个公司的PLC均互不兼容。目前，PLC在开放性方面已有实质性突破。十多年前PLC被攻破的一个重要方面就是它的专有性，现在情况有了极大改观，不少大型PLC厂商在PLC系统结构上采用了各种产业标准，如IEC61131-3、IEEE802.3以太网、TCP/IP、UDP/IP等。例如，AEGSchneider团体已开发以PLC机为基础，在Windows平台下，符合IEC61131-3国际标准的全新一体系结构的PLC实现高度分散控制，开放度高。高度分散控制是一种全新的产业控制结构，不但控制功能分散化，而且网络也分散化，所谓高度分散化控制，就是控制算法常驻在该控制功能的节点上，而不是常驻在PLC上或PC上，凡挂在网络节点上的设备，均处于同等的位置，将“智能”扩展到控制系统的各个环节，从传感器、变送器到I/O模块，乃至执行器，无处不采用微处理芯片，因而产生了智能分散系统（SDS）。
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为了使PLC更具开放性和执行多任务，在一个PLC系统中同时装几个CPU模块，每个CPU模块都执行某一种任务。例如三菱电机公司的小Q系列PLC可以在一个机架上插4个CPU模块，富士电机的MICREX-ST系列最多可在一个机架上插6个CPU模块，这些CPU模块可以进行专门的逻辑控制、顺序控制、运动控制和过程控制。这些都是在Windows环境下执行PC机任务的模块，组成混合式的控制系统。
近几年，众多PLC厂商都开发了自己的模块型I/O或端子型I/O，而通讯总线都符合IEC61131-3标准，这极大的增强了PLC的开放性。
创建开放的网络环境后，推出了能挂100M的高速以太网的WEB服务器模块，三菱电机公司小Q系列的QJ71WS96，横河电机FA-M3系列的F3WBM1-0T-S0；模块内的软件捆绑了目前常用的TCP/IP、UDP/IP等传输层和网络层规约，以及HTTP、FTP、SMTP、POP3等应用层规约，使PLC可直接进进因特网，成为不折不扣的WEB的PLC。
3、PLC的体积小型化，运算速度高速化
PLC小型化的好处是节省空间、降低本钱、安装灵活。目前一些大型PLC，其外形尺寸比他们前一代的同类产品的安装空间要小50%左右。
近几年，很多PLC厂商推出了超小型PLC，用于单机自动化或组成分布式控制系统。西门子公司的超小型PLC称通用逻辑模块LOGO！，它采用整体式结构，集成了控制功能、实时时钟和操纵显示单元，可用面板上的小型液晶显示屏和6个键来编程。LOGO！超小型PLC使用功能模块图FBD编程语言，有在PC上运行的Windows98/NT编程软件。
三菱电机的超小型PLC叫简单应用控制器，简称α并有AL-PCS/win-C型VLS软件，是强有力且界面友好的编程工具。松下电工的超小型PLC叫可选模式控制器。德国金钟—默勒公司（MOELLER）的超小型PLC称控制继电器，简称easy。
运算速度高速化是PLC技术发展的重要特点，在硬件上，PLC的CPU模块采用32位的RISC芯片，使PLC的运算速度大为进步，一条基本指令的运算速度达到数十个纳秒（ns）。三菱电机公司的ANA系列PLC最早使用32位的CPU模块，当今它的Q02H系列PLC的CPU模块也用了32位的RISC芯片，基本指令的执行时间为34ns；富士电机MICREX-SX系列PLC的CPU模块由于采用了32位RISC芯片后，其一条基本指令的运算时间为20ns。
AIR MonITOR CORPORATION MASS-tron II MASS FLOW TRANSMITTER W33305 W/ COLD MIX
EBM 415VAC .093/.087A 50/60Hz RADIAL COOLING FAN R2D190-AC08-10 *NEW*
ACCU-TRAC 2 MODEL 5150B EMITTER UE5150B-2
DAYKIN 1000VA 480V TO 120V STEP-DOWN DISConNECT TRANSFORMER MDGTB-05
FANUC ROBOTICS 2.5m CABLE ASSEMBLY A660-2003-T230
JOHNSON ConTROLS 400/460V 3-PHASE VFD66 ConDENSER FAN SPEED ConTROL VFD66DAA
IBS SPECIAL 100VACUUM PB15-100-K3N NIB
CUTLER-HAMMER .100KVA 115V TO 24V STEP-DOWN TYPE MTA TRANSFORMER C0100A3B *NEW*
SCHMERSAL 24VDC SAFETY SENSOR CSS 8-180-2P+D-E-LS?T *NEW*
SOLA HEVI-DUTY 10A 12VDC 120/240VAC DC POWER SUPPLY 83-12-3-10-3 *NEW*
PHOENIX ConTACT FL SWITCH SFN 5TX *NEW*
GRAYHILL ABB ROBOTICS PLC BACKPLANE BOARD 3HAB2782-1
KEYENCE STATIC ELIMINATOR ConTROLLER SJ-M100
UNICO ConTROL BOARD 306-563.1 9805
ANALOG DEVICES 5V 5kHz EXCITATION LVDT INPUT MODULE 3B17-02
ACCES I/O PRODUCTS ConTROL CARD PR3-AT PRC-AT REV. L
ANALOG DEVICES I/O MODULE PCB RTI-1262
PHOENIX ConTACT TERMINAL BLOCK IB STTB 24 DI32/2 / 9283103
GE GENERAL ELECTRIC 800A AKR POWERBREAK TR RATING PLUG TR16S800 *NEW*
GE GENERAL ELECTRIC 1600A AKR POWERBREAK TR RATING PLUG TR16S1600 *NEW*
YASKAWA ELECTRIC RAM MEMORY CARD PCB JANCD-MM14C
TOSHIBA POWER MODULE MG300Q2YS50
WEILAND SCHLEICHER 24VDC SAFETY RELAY SNE 4004KV
TELEMECANIQUE SCHNEIDER MODICON ETHERNET CABLING SYSTEM 499NES18100
PULS 5.15V/+12V/-12V RACK MOUNT DC POWER SUPPLY EL-261.940.01-0?1 A *REPAIRED*
GENERAL ELECTRIC 1-60 SECOND TIMER BTLF60C NIB
PULS 24V 10A ELECTRonICALLY PROTECTED DC POWER SUPPLY SL10.100
ELECTROCRAFT THERMALLY PROTECTED 115V 1/12HP AC MOTOR KPT-K29-BOM
DYNAPAR 5-26VDC 7-PIN ROTARY ENCODER HR62503600A01PS
SANYO DENKI TAPE READER 2702
ORIENTAL MOTOR 6W AC SPEED ConTROL MOTOR MSM206-402
VALENITE GAGING SYSTEMS TRANSDUCER TERMINAL STRIP BOARD 766G101-L02 REV. B
SICK POWER SUPPLY FOR CLV 200 OR CLV 400 BARCODE SYSTEM PS51-1000 7 022 834
ITW BALANCE ENGINEERING MEMORY CARD PCB GESMEM-12D 9602
IFM ELECTRonICS FREQUENCY / SPEED MonITOR FR-1 DD2003
ACOPIAN POWER SUPPLY A30NT75 *NEW*
WEIDMULLER TERMINAL BLOCK AKZ 1.5 *NEW, BOX OF 80*
OLSUN 1.5KVA 240/480V -100/200V STEP-DOWN TRANSFORMER 8420 S-21376 415-041-0003
NAMCO ConTROLS ENCODER BOARD PCE500-10000 CA250-11100
ALLEN BRADLEY 24VDC COIL 60A ConTACTOR STARTER 100-C60J00 SER. B
WARDEN TRonICS INC. ConTROL BOARD 1008-101 REV. C
CUTLER-HAMMER 480/277VAC 400A MAX 3-PHASE IQ UNIVERSAL POWER SENTINEL 4D13113G03
DAYTRonIC THERMOCOUPLE ConDITIONER MODULE 9110AT
DAYTRonIC THERMOCOUPLE ConDITIONER MODULE 9110AT/000
HELLER MEMORY BOARD MUB 28 / F 23.032 301-000 / 10347
SQUARE D 230/460V TO 115V STEP-DOWN TRANSFORMER DISConNECT SK500G1
ARTIS 6-SLOT BACKPLANE CHASSIS BG 1/1 19" 3HE 4689-50/02
YASKAWA ELECTRIC BACKPLANE BOARD JANCD-MBB02-2 REV. B
ORIENTAL MOTOR VEXTA 120W BRUSHLESS DC MOTOR FBLM5120W-GFB W/ GEAR HEAD GFH5G10
NEMIC LAMBDA 24V 5A DC POWER SUPPLY HKR-120-24
IFM EFECTOR INC 20..36VDC FLOW MonITOR SI1000 SID10ADBFPKG/US
SOLA SCP SERIES 5VDC 6.0A SWITCHING POWER SUPPLY SCP30 S 5-DN *NEW*
DREXELBROOK MULTIPOINT II LEVEL ConTROL 406-3033-001
BANNER MAXI AMPLIFIER MODULE CM5RA *NEW*
KEYENCE DIGITAL LASER SENSOR AMPLIFIER LV-21A *NEW*
HIRSCHMANN MICE MEDIA MODULE MM2-4TX1
ALLEN BRADLEY 2 POSITION SPRING RET. SELECTOR SWITCH UNIT 800T-H48 SER. T *NEW*
GE FANUC TERMINAL ASSEMBLY ANALOG DC 41/20 IC660TSA020K, NNB
GE GENERAL ELECTRIC 30-43A THERMAL OVERLOAD RELAY RTN2E
ALLEN BRADLEY MEMORY SEGMENT (RAM) 1772-MT
TECNOCABLAGGI 300VA TRANSFORMER TCN19000300.003
RELIANCE ELECTRIC A/B INTERFACE MODULE 0-57418-A
TELEMECANIQUE 24VDC COIL 10A ConTROL RELAY CA3SK20 W/ LA4SKC1U *LOT OF 10*
ASTEC I/A SERIES 39VDC OUTPUT INDUSTRIAL POWER MODULE 2 AA16560
USON TWENTY PROGRAM MEMORY MODULE 413
HEVI-DUTY .550KVA TYPE SBE 220/230/240/440?/460/480-110/11?5/120V TRANSFORMER E55
COSEL 5V 3A DC POWER SUPPLY K15AU-5 *NEW*
MERLIN GERIN 63A 3-POLE CIRCUIT BREAKER NS100L / TM 63 D
IAI REGENERATIVE RESISTOR UNIT *LOT OF 3*
CHROMALOX PROCESS ConTROL 3101-11100
TELEMECANIQUE 24VDC COIL 10A ConTROL RELAY CA3SK20 W/ LA4SKE1E *LOT OF 10*
SCIEMETRIC 16-BIT A/D ConVERTER MODEL 237 REV. 3A
VICKERS AMPLIFIER CARD EEA-AMP-102-A-1?0
TELEMECANIQUE 24V COIL 110A 600V ConTACTOR LP1 D8011 W/ LR2 D3361
CUTLER-HAMMER EATON SIZE 2 45A STARTER 110/120V COIL CN15GN3 SER. A1
RASMI ELECTRonICS LTD 7A 250VAC SINGLE PHASE RFI FILTER R88A FIW 107-E
ZIATECH 96 POINT DIO INTERFACE ZT PCB-89CT61
KLOCKNER-MOELLE?R 10A 0.2S-30S/20S-18?0S TIMER RELAY DIL08-33-T
ASTEC I/A SERIES 39VDC INDUSTRIAL POWER MODULE 2 CM902WL
ALLEN BRADLEY 110/115-120VAC COIL NEMA SIZE 3 90A ConTACTOR 500-DOD930 SER. A
DATALOGIC ConTROLLER CARD HS870B-4
ALLEN BRADLEY DUAL-INPUT PILOT LIGHT 800T-PSDT16 SER. T *LOT OF 10*
ALWAYS TECH SCSI HOST ADAPTER BOARD IN-2000
OMEGA 90-240VAC TEMPERATURE ConTROLLER CNi3233
RELIANCE ELECTRIC RESOLVER INPUT MODULE 57411-2J
PHOENIX ConTACT SUBCON ConNECTOR SUBCON 9/M-SH 27 61 50 9 *NEW, LOT OF 2*
YASKAWA ELECTRIC MRC POWER DISTRIBUTION BOARD JANCD-MTU01
ASEA ABB ConTROL BOARD DSPA 110 / YB 161 101-CK
TELEMECANIQUE 24 V 25 A REVERSING STARTER LC2D09REQ3827G1?3
ESCORT MEMORY SYSTEMS ConTROL CARD HS900-4
TELEMECANIQUE 24 V 40 A REVERSING STARTER LP2D2501
HonEYWELL TEMPERATURE ConTROLLER DC5011-A0-5A00-?10-00-312
HonEYWELL TEMPERATURE ConTROLLER UDC5000 ULTRA-PRO DC5062-0-0021-1?30-00-0111
HonEYWELL TEMPERATURE ConTROLLER UDC5000 ULTRA-PRO DC5061-0-1002-2?00-FM-0211
ASHCROFT PRESSURE LIMIT SWITCH B764B XFS06
ANALOG DEVICES ISOLATED LINEARIZED THERMOCOUPLE MODULE 3B47-J-03 *NEW*
SQUARE D POWEREX USA POWER MODULE 27999-02673
ALLEN BRADLEY 24VDC COIL RELAY 700DC-F400J SER. C *LOT OF 10*
FANUC 0.2mH, 60A, 3-PHASE LINE REACTOR A81L-0001-0122
JOHNSON ConTROL DIFFERENTIAL PRESSURE REGULATOR P74HA-9 *NEW*
ALLEN BRADLEY 24VDC COIL RELAY 700DC-F400J SER. B *LOT OF 10*
GE 30A 240VAC 7.5HP HEAVY DUTY SAFETY SWITCH NP1578000K
POTTER & BRUMFIELD 0.1 S - 9990 HRS PROGRAMMABLE MULTIFUNCTION RELAY CNT-35-76
HOST AUTOMATION ETHERNET base ConTROLLER MODULE H2-EBC
FANUC PCB DAUGHTER BOARD A20B-2901-0254/?01A
CHLORIDE 700VA/490W POWER PROTECTION MODULE UPS ACTIVE 700 / 570219.010
TELEMECANIQUE 3A 240V SAFETY INTERLOCK SWITCH XCS-B713
COOPER CROUSE HINDS X8992-7 MINI-LINE SINGLE ENDED ConNECTION CORDSET, NNB
RED LION CUB4L800 MINIATURE ELECTRonIC COUNTER, NIB
RED LION CUB4L000 MINIATURE ELECTRonIC COUNTER, NIB
PEPPERL + FUCHS TRANSFORMER ISOLATED REPEATER KFD2-CR-Ex1.30-?200 / 71840
OPTOLINX 5VDC MEDIA ConVERTER FCU-100ST
WEIDMULLER 4-20MA RELAY MODULE RS 116916
DonGAN 350KVA SINGLE PHASE INDUSTRIAL ConTROL TRANSFORMER HC-0250-4100
BANNER Q45 SERIES INFRARED GLASS FIBER OPTIC SENSOR Q45VR3FQ *NEW*
PHOENIX ConTACT INTERFACE ConVERTER MODULE PSM-EG-RS232/RS?485-P/2D
STATIC ConTROLS CORPORATION ConTROL BOARD AD-0941-001
KUKZ ROBOTICS RELAY BOARD 390-00214-0 / INI 07/2 LOET
AEG 24VDC DIGITAL OUTPUT MODULE DAP 002 / 6051-042.218395?.03
TELEMECANIQUE integral 32 SELF-PROTECTED STARTER LD4 LC030 / LB1 LC03M03
KAWASAKI ROBOTICS ConTROL BOARD 50999-1769R10
GSE TECH-MOTIVE DISPLAY SCREEN BOARD 05464 33633-73B
CUTLER-HAMMER 50VA 50/60Hz TRANSFORMER C0050E6U
ALLEN BRADLEY GUARD MASTER SAFETY ConTROL RELAY 700S-CFB530EJC *NEW*
KLOCKNER MOELLER 3-POLE 600VAC 1.2-2.1A OVERLOAD RELAY ZW6-70-NA
KEYENCE STATIC ELIMINATOR ConTROLLER SJ-M400
SCHAFFNER POWER SOURCE 24V 7A DC POWER SUPPLY WRE24SX-U
SICK OPTIC ELECTRonIC SAFETY RELAY MODULE LCU-FSD / 7022900
BBC BROWN BOVERI VERITRON POWER SUPPLY UNIT GCB 0121 A
VEE-ARC BUS BOARD FOR SUPER 7000 PCB 930-104
USON CORP ConTROL BOARD PCB SSD PROM 475-X300C
TEXAS INSTRUMENTS REMOTE base ConTROLLER MODULE 500-2112
SUMITOMO HEAVY INDUSTRIES ConTROL BOARD SXAN-C / SA765625AX / SA765657AD
SUMITOMO HEAVY INDUSTRIES ConTROL BOARD SXAN / SA765729AX / SA765728AD
UNICO ConTROL BOARD 313571.001
SOLA 95-130/190-260/?380-520V TO 120V ConSTANT VOLTAGE TRANSFORMER 23-23-125-8
PILZ 24VDC SAFETY RELAY PZE X4VP4 24VDC 4n/o
HF ConTROLS I/O BOARD AFS-IO-02 / 311328-01 *NEW*
ALLEN BRADLEY POWER ConTROL BOARD 74102-405-54 REV. 03
PHOENIX ConTACT INTERBUS-C 24VDC DIGITAL INPUT/OUTPUT IBS 24 CDIO
EATON 6.3-10A MANUAL MOTOR PROTECTOR XTPB010BC1
TELEMECANIQUE integral 32 SELF-PROTECTED STARTER LD4 LC030 / LB1 LC03M17
ALLEN BRADLEY EXPANSION CABLE SET 96552701 / 1775CX *NEW, SET OF 4*
CERBERUS ADDRESSABLE INTERFACE MODULE TRI-2
MERLIN GERIN SINGLE POLE 10A CIRCUIT BREAKER MULTI 9 C60 C10A 60110 *LOT OF 10*
GOULD GETTYS AC SERVO BACKPLANE BOARD 11-1017-00
HonEYWELL ACO ConTROL BOARD EZV505
FUJI ELECTRIC 24VDC REVERSING STARTER SC-E02
MITSUBISHI ELECTRIC 200A FAST RECOVERY DIODE MODULE N3NAA3 / RM200HA-24F
USON CORP SSHD PROM MODULE 476A300C
OKUMA PHOTOCOUPLER INPUT 4B E.I.O CARD E0241-653-033C
MARPOSS ConTROL CARD 6830221004
IEE 7.375"x2.58" VACUUM FLUORESCENT DISPLAY 03602-122-09220 / 05464ASSY35119-?01C
DAYTRonIC ANALOG INPUT MODULE MODEL 9163/002
DENGENSHA ConTROL BOARD PE-0445-2
DAYTRonIC ANALOG OUTPUT BUFFER MODEL 9210
MITSUBISHI ELECTRIC 200A FAST RECOVERY DIODE MODULE N53BA1 / RM200HA-24F
MARPOSS ConTROL BOARD 6830176903
MARPOSS ConTROL BOARD 6830148811
USON 1.44M DISK DRIVE MODULE 412B300D
MITSUBISHI 10.4 IN LCD DISPLAY SCREEN AA104VB02 W/ INVERTER BOARD 114195-001 C
BOSCH ConTROL BOARD 1070080839-105
TOYODA TOYOPUC PLC ETHERNET MODULE THU-5296
LOVE ConTROLS SERIES 2600 TEMPERATURE ConTROLLER 25115
ALLEN BRADLEY 115-120V COIL 45A AC ConTACTOR 500-COD940
RELIANCE ELECTRIC ConTROL BOARD 0-55307
KANSON ELECTRonICS ISSC 10A 1/3HP .06-25 SEC ON DELAY TIMER 1013-1-H-1-B *NEW*
RENO A&E 24VAC MODEL B INDUCTIVE LOOP VEHICLE DETECTOR B-7
RATHGEBER 500VA 504/480/456V TO 115V STEP-DOWN TRANSFORMER ET 500 CNA
BOSCH ConTROL BOARD 1070080839-101
RED LION ConTROLS DIGITAL PANEL METER IMD20102
MEDAR FIRING BOARD 6454-3
TPI TEST PRODUCTS MODULE 10-875-0049 R00
ALLEN BRADLEY BULLETIN 609 RENEWAL PART COVER W4018980901 *NEW*
RED LION ConTROLS DIGITAL PANEL METER IMD20162
BETA TECH ConTROL BOARD BC-UTL-011-003
DAYKIN 1500VA STEP-DOWN INDUSTRIAL ConTROL TRANSFORMER TA1501
THERMO ENVIRonMENTAL INSTRUMENTS INC 9410
THERMO ENVIRonMENTAL INSTRUMENTS INC MODEL 42 onLY P/N: 9279
ABB ROBOTICS POWER SUPPLY MODULE YYE 109A YT212001-AB/3
KAWASAKI ROBOTICS BACKPLANE BOARD 1HZ-50 TPB-S.V0
ALLEN BRADLEY ULTRA3000 DRIVE MOUNTED BREAKOUT BOARD 2090-U3BB2-DM44 SER. A *NEW
MEAN WELL 24VDC 3.2A DC POWER SUPPLY DR-75-24 *NEW*
FURNAS VeeArc DRIVE PROGRAMMING UNIT
CHALLENGER 110/120VAC COIL SIZE 1 3-PHASE STARTER CU13S01 W/ BA13A
McLean MIDWEST TEMPERATURE ConTROLLER 10-1106-14 *NEW*
KEYENCE BAR CODE DISPLAY INTERFACE BL-V35E
NEMATRON ConTROL CARD 110A0434B REV. B
NEMATRON ConTROL CARD 110A0431 REV. A
ELVA ConTROL BOARD MGDC
IFM ELECTRonIC EFECTOR 200 PHOTOELECTRIC SENSOR OJ5054 *NEW*
DigiBoard SERIAL COMMUNICATIONS BOARD PC/8 16C450 / 50000179 REV. N *NEW*
