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用户希望能通过PLC在软技术上协助改善被控过程的生产性能;需要PLC能与PC机更好地融合,以便于在PLC这一级就可加强信息处理能力。为顺应这些要求,CONTEC与三菱电机合作,推出专门装插在小Q系列PLC的机架上的PC机模块。该模块占2个插槽,实际上就是一台可在工厂现场环境正常运行、而且可通过PLC的内部总线与PLC的模块交换数据的PC机。其处理机芯片采用Intel的Celeron 400MHz主频,系统内存128MB,Cache 128K。支持外挂显示器(大分辨率1024x768,65,536色,显存2MB)。接口有:USB 1个,可扩至2个;以太网插口RJ45(10BASE-T/100BASE-TX0;串口RS 232C 1个,可扩至2个;并口可扩1个;鼠标、键盘口PS/2;外挂软盘驱动器口;外挂硬盘驱动器口;以及2个PC卡件(PCMCIA总线)。硬盘模块或固态盘可插装在PLC机架上。该模块可预装Windows NT 4.0或Windows 2000。支持的软件有:三菱综合FA软件MELSOFT(包括PLC编程软件:GX;FA数据处理、日常业务处理加速中间件:MX;人机界面画面设计编程软件:GT;运动控制设计编程维护软件:MT;以及过程控制设计编程维护软件:PX)。另外,还支持三菱FA用的通信中间件EZSocket。
所以将PC机模块与PLC的模块、过程控制模块或运动控制模块同时插在一个机架上,实际上就是将原来PLC要通过工厂自动化(FA)用PC机与管理计算机通信的三层结构(图1a),改为PLC系统可直接与生产管理用的计算机通信的两层结构(图1b)。这样一来,上报生产实绩,接受管理机的生产指示来得快捷方便。
PLC基础技术的进展
TURCK RK 4T-1 CABLE
TURCK WKB 4T-4 CABLE
TURCK WKC 572-2M CABLE
LUMBERG RST5RWT 3U-664-2M SENSOR CABLE
TURCK BI 10-M30-AP 6 X CABLE
TURCK BI 2-G12-Y0X CABLE
TURCK BI10-G30-R73X CABLE
TURCK KB 5T-6 CABLE
TURCK PSG 3M-1/S90 CABLE
TURCK RK 4.2T-6 CABLE
TURCK TC9S 2-R669-5M CABLE
FESTO 3648 PV-3-1/8 ROBUST PALM OPERATED VALVE
TURCK VB2-RS-4.5T-.S/SVAS 22-D428-.2/.2 CABLE NEW LOT 3
TURCK RK 4T-2 CABLE NEW LOT OF 2
TURCK BI5-G18-RZ3X CABLE NEW LOT OF 2
TURCK RK 4.4T-1-RS 4.4T CABLE NEW LOT OF 2
SIEMENS 6EC1700-0A SIMATIC
LEUKHARDT BASIC 586 COMPUTER DRIVE
HONEYWELL 3LC30 DETECTOR 3 LIGHT CURTAIN RECEIVER
SAMES TRP 500 N 3274 VA SELECTRO FINISHING SPRAYER
RACINE PVF SNT0 12ER 01 VANE PUMP
AIR FIXTURES AFAT 822-SPL AIR OPERATED TAPE DISPENSER
FANUC A02B-0118-C043 DPL/MDI POWER MATE PANEL W/ CABLE
FANUC A02B-0118-C033 DPL/MDI POWER MATE PROGRAM PANEL
INDRAMAT HDS03.2-W100N-HS12-01-F DRIVE CONTROLLER
TURCK RK 4T-4 EUROFAST APPEARS
ENDRESS HAUSER DB 51A HYDROSTRATIC LEVEL MEASUREMENT
COOPER CROUSE-HINDS CHDN-EAE-D2 CABLE NEW
TURCK BI2-Q12-RZ31 CABLE NEW
TURCK CSM CKM 12-12-6/S101MULTIFAST CABLE NEW
ALLEN BRADLEY 700-P1200A1 AC RELAYS, LOT OF 3
INDRAMAT LE5-024 AUXILIARY FAN
INDRAMAT NAM 1.3-08 LINE FORMER
ITC LR 106309 Fuse Holder LOT OF 12
FANUC IC693MDL645E MODULE
CAMCO EMERSON MIC8207-B ACM MODULE
RELIANCE ELECTRIC 34G601 P TO E TRANSDUCER, NIB
ITT CONOFLOW COMMANDAIRE MODEL 34 POSITIONER
GESTRA LRG 16-1 CONDUCTIVITY ELECTRODE
DIGI-DOG DIGTALLY PROGRAMMABLE ROTARY LIMIT SWITCH
MODICON AEG AS-B350-001 OUTPUT MODULE
SQUARE D SL-1 8854 PLUG-IN LOGIC MODULE
CUTLER HAMMER D2PA4 RELAY LOT OF 5 NIB
ALLEN BRADLEY 1771-IK ENCODER / COUNTER MODULE !!NICE!!
FOXBORO L0119RU-9 BOARD
FIFE 44-10193-001 PC BOARD
ALLEN BRADLEY 1764-24BWA MicroLogix 1500 BASE UNIT
INDRAMAT TDM1.2-100-300-W1-115 AC SERVO CONTROLLER
INDRAMAT TDM1.2-30-300-W0 SERVO CONTROLLER
20th CENTURY 23" O.A.L. TRAVEL 14" BALL SCREW
20th CENTURY A-462 BALL SCREW
CUTLER-HAMMER AF93AG0C002D AC DRIVE W/ OTHERS
INDRAMAT TVM 2.1-050-W1-115V AC SERVO POWER SUPPLY
INDRAMAT TBM 1.2-40-W1-115 AC SERVO BLEEDER
TOTAL CONTROL SYSTEMS 682-15AF2BX 4" METERING PUMP
TOTAL CONTROL SYSTEMS 682-15AF2BX 4" METERING PUMP
SUTRON TP35NC/066032 OPERATOR INTERFACE PANEL
TROMBETTA D515-A12 SOLENOID
TEKTRONIX A6902A ISOLATOR W/ PROBES & MANUAL
DODGE 56WM16B GEARMOTOR, NNB
SIEMENS 6EV 3054-06C PCB
TORITU 57-1 AND OTHER BAND HEATERS, LOT OF 5