1751-SLBA
1751-SLBA
DCS控制系统与PLC控制区别
1. DCS是一种“分散式控制系统”，而PLC只是一种(可编程控制器)控制“装置”，两者是“系统”与“装置”的区别。系统可以实现任何装置的功能与协调,PLC装置只实现本单元所具备的功能.
2. 在网络方面,DCS网络是整个系统的中枢神经，和利时公司的MACS系统中的系统网采用的是双冗余的100Mbps的工业以太网，采用的国际标准协议TCP/IP。它是安全可靠双冗余的高速通讯网络，系统的拓展性与开放性更好.而PLC因为基本上都为个体工作，其在与别的PLC或上位机进行通讯时，所采用的网络形式基本都是单网结构，网络协议也经常与国际标准不符。在网络安全上，PLC没有很好的保护措施。我们采用电源,CPU,网络双冗余.
现货，现货，降降降，火火火，火火火……
现货，现货，降降降，火火火，火火火……
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ACCURAY 100639-001 ICC VME SCANNER ConTROL MODULE BOARD
FOXBORO P0913PS DUAL FLOPPY DISC DRIVE I/A SERIES P
OKUMA OSP7000M E4809-770-104 OPERATOR INTERFACE MACHINE
ConSOLIDATED PST-5000 POWER SEMIConDUCTOR TESTER 67277
MOOG D651-403A P70FBX3ANFN HYDRAULIC SERVO PROPORTIONAL
GSI LUMonICS E81Z3220XREF MARK6 MWA BOOST MODULE LASER
COOPER GARDNER DENVER 74121AA3 7.7HP ROTARY VANE AIR MO
GSI LUMonICS E81Z3230XREF LASER LAMP DRIVER ASSY ASSEMB
WESTINGHOUSE HSA AC MOTOR 300HP 2300V A506US 1775RPM 3P
OHMART LJTH RADIATION LEVEL DETECTOR TRANSMITTER 132IN
NELES JAMESBURY 796-0121-36 16IN STAINLESS BUTTERFLY VA
STAFSJO KRE020C86P00 KNIFE GATE VALVE 8" CL150 PNEUMATI
INGERSOLL-RAND IR 73393-AH9 RADIAL PISTON AIR MOTOR 1.7
FISHER 6" VEE BALL ConTROL VALVE 150-300 CG8M STAINLESS
ROSEMOUNT 3095 MA2CABA11AA01BB FLOW METER TRANSMITTER 5
ROSEMOUNT 3095 MA2CABA11AA01BB MASS PRO BAR FLOW METER
ROSEMOUNT 3095MA2CABA11AA01BB SMART HART TRANSMITTER 55
ROSEMOUNT 3095 MA2CABA11AA011BB MASS PRO BAR FLOW METER
ROSEMOUNT 3095 MA2CABA11AA011BB MASS PRO BAR FLOW METER
GENERAL ELECTRIC IC4501A101A ISOLATION AMPLIFIER 50V-DC
HonEYWELL MEASUREX 053567-02 08502604 REV A QSSB-ML4 PR
BROOKFIELD TT200 INLINE PROCESS VISCOMETER FLUID VISCOS
SQUARE D CH 365DS HEAVY DUTY SAFETY DISConNECT SWITCH 3
SIEMENS MOORE EAM APACS 16154-93/3 39EAMCBN ENHANCED AN
GE GENERAL ELECTRIC 7VSLS632CD01 PAYOFF DC DRIVE 25A 50
ABB AC MOTOR DRIVE INVERTER UNIT ACV701-0170-5 0-500V 2
HonEYWELL 51401288-100 HDW HPK-2 BOARD PROCESSOR C CONT
ABB ACS800-U1-0040-5 AC DRIVE INVERTER 40HP 380-500V 52
ALLIS CHALMERS RGZ-CH AC INDUCTION MOTOR 100HP 460V 880
ROCKWELL RELIANCE ELECTRIC 1326AB-B520E-21 AC SERVO MOT
BALDOR CSM3546-4 AC MOTOR 1HP 230/460V 56C 3 PHASE 3500
BALDOR CSM3546-4 AC MOTOR 1HP 230/460V 56C 3 PHASE 3500
BALDOR CSM3546-4 AC MOTOR 1HP 230/460V 56C 3 PHASE 3500
BALDOR CSM3546-4 AC MOTOR 1HP 230/460V 56C 3 PHASE 3500
GOULDS WS3037D4 SUBMERSIBLE SEWAGE PUMP 3HP 575V 750RPM
FLOWSERVE 85-15SA 80 SERIES SINGLE CARTRIDGE MOUNTED FL
NOSS RS-630 RADISCREEN C COURSE SCREEN VANE ROTOR HUB F