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我們新研制出一種用于紙漿白度測定的智能白度儀，該儀表采用西門子公司生產(chǎn)的S7-224 CPU結(jié)合軟件功能進(jìn)行數(shù)據(jù)處理，具有較好的可靠性、重復(fù)性、精確度和穩(wěn)定性。為了使其能與其它智能設(shè)備之間實(shí)現(xiàn)通信，我們將通過現(xiàn)場總線技術(shù)把它連接到網(wǎng)絡(luò)中，使它成為造紙廠現(xiàn)場總線控制系統(tǒng)的一部分。

2.現(xiàn)場總線的選擇

  2.1現(xiàn)場總線技術(shù)的選擇

  現(xiàn)場總線集控制技術(shù)、計(jì)算機(jī)技術(shù)、通信技術(shù)于一體，是當(dāng)今自動(dòng)化領(lǐng)域技術(shù)發(fā)展的熱點(diǎn)之一。這項(xiàng)技術(shù)可將多個(gè)智能控制儀表連接成網(wǎng)絡(luò)系統(tǒng)，實(shí)現(xiàn)分布式計(jì)算機(jī)控制，提高檢測和控制精度，改善系統(tǒng)的動(dòng)態(tài)響應(yīng)速度，提高系統(tǒng)安全性，從而得到了廣泛的應(yīng)用。

  近年來，幾種有影響的現(xiàn)場總線技術(shù)已在一些特定的應(yīng)用領(lǐng)域里顯示出各自的優(yōu)勢。在此，我們選定了現(xiàn)為德國和歐洲標(biāo)準(zhǔn)的PROFIBUS（Process Fieldbus）現(xiàn)場總線。一方面由于它是目前數(shù)據(jù)傳輸率快的一種現(xiàn)場總線，傳輸率高可達(dá)12Mbps，另一方面它能夠很好的與西門子的傳動(dòng)設(shè)備相配合，并與西門子PLC（Programmable Logic Controller）結(jié)合緊密且組態(tài)簡便。

  2.2 PROFIBUS現(xiàn)場總線簡介

  參照ISO/OSI參考模型,PROFIBUS現(xiàn)場總線只包含物理層、數(shù)據(jù)鏈路層和應(yīng)用層。由PROFIBUS-DP，PROFIBUS-FMS， PROFIBUS-PA組成PROFIBUS系列。

  PROFIBUS-DP：經(jīng)過優(yōu)化的高速、廉價(jià)的通信連接，專為自動(dòng)控制系統(tǒng)和設(shè)備級分散I/O之間通信設(shè)計(jì)，使用PROFIBUS-DP模塊可取代價(jià)格昂貴的24V或0～20mA并行信號線。用于分布式控制系統(tǒng)的高速數(shù)據(jù)傳輸。

  PROFIBUS-FMS ：解決車間級通用性通信任務(wù)，提供大量的通信服務(wù)，完成中等傳輸速度的循環(huán)和非循環(huán)通信任務(wù)，用于紡織工業(yè)、樓宇自動(dòng)化、電氣傳動(dòng)、傳感器和執(zhí)行器、可編程序控制器、低壓開關(guān)設(shè)備等一般自動(dòng)化控制。

  PROFIBUS-PA專為過程自動(dòng)化設(shè)計(jì)，標(biāo)準(zhǔn)的本質(zhì)安全的傳輸技術(shù)，實(shí)現(xiàn)了IEC1158-2中規(guī)定的通信規(guī)程，用于對安全性要求高的場合及由總線供電的站點(diǎn)。

  本設(shè)計(jì)中采用的是PROFIBUS-DP標(biāo)準(zhǔn)，PROFIBUS-DP（或DP標(biāo)準(zhǔn)）是由歐洲標(biāo)準(zhǔn)EN50170定義的一種遠(yuǎn)程I/O通信協(xié)議。DP表示分布式外圍設(shè)備，亦即遠(yuǎn)程I/O。PROFIBUS-DP還用到了應(yīng)用層接口（ALI），ALI將過程對象轉(zhuǎn)換為通信對象。

 TESTED SURPLUS GE FANUC VERSAMAX MICRO CONTROLLER IC200UDR001-BB
       IC610PER151D GE FANUC PRINTER INTERFACE MODULE SNAP-ON CC
       GENIUS I/O 115V 50/60HZ .1A MAX GE FANUC BLOCK/BRICK IC66OELA100A (II3)
       GE Fanuc VersaMax micro controller IC200UDD112-BC -60 day warranty
       GE Fanuc servo motor power cable IC800SKCPV050B - 60 day warranty
       GE FANUC SERVO MOTOR A06B-0614-B032
       GE Fanuc Series 90 Micro Programmable Controller IC693UDR005FP1 In: 24VDC
       GE Fanuc PLC Series 90 Micro, IC693UDR001NP1
       GE Fanuc PLC Output Module, IC693MDL340E, 120VAC, .5A, 16PT
       GE Fanuc PLC Analog Input Card, IC693ALG220G, 4PT Voltage
       GE Fanuc PLC Analog Input Card, IC693ALG220D, 4PT Voltage
       GE Fanuc IC697CHS782B Series 90-70 17 Slot Rear Mount Rack
       GE Fanuc IC693UDR002BP1 Series 90 Micro Programmable Controller
       GE Fanuc IC693PWR321CA Power Supply 120/240VAC 30W
       GE Fanuc IC693CPU331Y CPU 331 Module
       GE Fanuc IC693CPU331S CPU 331 Module
       GE Fanuc IC693CPU331N CPU Module 90-30
       GE Fanuc IC693CPU323J Base 10 Slot Rack with CPU
       GE Fanuc IC693CPU323E Base 10 Slot Rack with CPU
       GE Fanuc IC693CPU323D Base 10 Slot Rack with CPU
       GE Fanuc IC693CPU323C Base 10 Slot Rack with CPU
       GE Fanuc IC693ALG390D 2PT Analog Output Module
       GE Fanuc IC693ALG221C Input Analog 4PT Current
       GE Fanuc IC693ALG220D 4PT Analog Input Module
       GE FANUC IC660EBD101S GENIUS I/O MODULE, IC660TSD100L TERMINAL
       GE FANUC IC660EBD101 BLOCK
       GE Fanuc IC630MDL311A 24VAC/DC SRCE Input Module 16 Circuits
       GE Fanuc D-A7610-4 Board
       GE Fanuc A20B-0007-0070-06B Circuit Board
       GE FANUC A16B-1212-0222/02A I/O C5
       GE Fanuc A14B-0076-B001 Input Unit
       GE Fanuc 230VAC Output Module A03B-0819-C158
       GE FANUC 10 SLOT BASE EMI ENHANCED IC693CHS391M
       FANUC TEACH PENDANT CABLE A660-2004-T284 L=11MEB / YF91-F MR-20LW (B27)
       Fanuc Robotics EE-1063-001 Accuflow Counter Input Module
       Fanuc Operator Interface Board A20B-1006-0291/02B A20B1006029102B
       Fanuc Keypad PCB A20B-1001-0510/02A A35O-IOOI-T5I2/O2 A350-1001-T512/02
       FANUC CRT/KB UNIT A05B-2051 - C102
       Fanuc AID32F1 Input Module A03B-0807-C106
       Fanuc A20B-1007-0540/01A Relay Board
       Fanuc A20B-1006-0290/02B Operator Panel Relay Board
       Fanuc A20B-1005-0120/03A Power Supply Board
       Fanuc A20B-1004-0590/02B Slot Rack Control Chassis
       Fanuc A20B-1002-0490/02A Video Signal Board
       Fanuc A20B-1000-0472/03A Power Supply Board
       FANUC A16B-2203-0830/03A CIRCUIT BOARD CHEAP (C47)
       Fanuc A16B-2200-0917/04A Option Board without Daughter Boards
       FANUC A16B-2200-0020/05C BASE 2 FANUC A16B-2200-002 BOARD
       FANUC A16B-1700-0130 PC BOARD A16B-1700-0130 A16B-1700-0130/02B
       Fanuc A16B-1310-0600/02A Purge Control Board
       Fanuc A16B-1310-0530/17D Power Input Board
       Fanuc A16B-1212-0030/02B Detector Adapter Board
       Fanuc A16B-1211-0120/05B CPU Board
       Fanuc A16B-1211-0120/04B CPU Board
       Fanuc A14B-0076-B001-01 Servo Amplifier Input Unit
       Fanuc A14B-0061-B103 Input Module RC Power Unit
       Fanuc A05B-2452-D350 Connector Assembly
       Fanuc A05B-2400-C060 2 Slot Backplane Module
       Fanuc A05B-2300-C002 4 Slot Backplane Rack
       Fanuc A05B-2051-C041 RH Battery Unit
       Fanuc A02B-0236-C203 Detector Interface Module SDU1
       Fanuc A02B-0047-C062 Tape Reader Unit
       Fanuc 15-TA Base Module A02B-0094-B502
Union/Fanuc Power Transber, # A80L-0001-0339, 1800 VA, **        ** WARRANTY **
TSUGAMI NP-32 CNC FANUC SERVO AMPLIFIER DRIVE A06B-6058-H003 BOARD A20B-1003-003
TSUGAMI NP-32 CNC FANUC SERIES O OO MAINTENANCE MANUAL BOOK B-60125E/02
TSUGAMI NP-32 CNC FANUC AC SPINDLE SERVO UNIT MAINTENANCE MANUAL B-65015E/01
TSUGAMI NP-32 CNC FANUC AC SERVO UNIT MAINTENANCE MANUAL GUIDE B-54765E/02
TSUGAMI NP-32 CNC FANUC AC SERVO UNIT DIGITAL MAINTENANCE MANUAL B-65005E/05
TSUGAMI NP-32 CNC FANUC A20B-1001-0731 EXPANSION MODULE BOARD A350-1001-T736
TOYODA GT-32 CNC LATHE FANUC A03B-0801-C123 ID64C INPUT MODULE A03B0801C123
TOYODA FH-45 CNC MILL FANUC A14B-0076-B106 INPUT UNIT A16B-1600-0080 BOARD
TOSHIBA FANUC A50L-1-0230 IGBT TRANSISTOR
TOSHIBA FANUC 100A IGBT TRANSISTOR A50L-1-0212 *LOTS OF 3*
TESTED        SURPLUS FANUC IC693ALG390 GE
TESTED        GE FANUC PLC IC693UDR001RP1 IN 24VDC
TESTED        GE FANUC PLC IC693UDR001LP1 IN 24VDC
TESTED        GE FANUC PLC IC693UDR001CP1 IN 24VDC
TECNO WASINO LG-6 FANUC NTJ0511A CONTROL PANEL A860-0201-T001 PULSE GENERATOR
TAMAGAWA SEIKI A86L-0027-0001 TS1508N92 OPTICAL SHAFT ENCODER FANUC TAPE DRILL
TAMAGAWA FANUC A90L-0001-0197 5715 READER MOTOR LT 2
TAKISAWA MAC-V3 CNC MACHINE FANUC SYSTEM 6M CONTROL OPERATOR PANEL KEYBOARD
TAKISAWA MAC V2 CNC MILL W/ FANUC 6M ELECTRONIC DIAGRAM
TAKAHASHI TNC-LO LATHE FANUC SERIES O-MATE T 0-MATE CONTROL PANEL A02B-0091-C041
TAKAHASHI TNC-LO LATHE CONTROL PANEL & FANUC PULSE GENERATOR A860-0201-T001
SW1857C Fanuc High Quality Ceramic Module (1 PER)
STAR RNC-16 CNC LATHE FANUC OPTION A13B-0139-C360 OPERATOR CONTROL PANEL
STAR MAF-42 CNC FANUC BOARD A16B-1211-0280 /03A A16B12110280 A320-1211-T286/02
STAR MAF CNC MACHINE FANUC POSITIONING MODULE PT01A A03B-0801-C051 A03B0801C051
STAR MAF CNC FANUC VELOCITY CONTROL DRIVE UNIT A06B-6050-H102 A20B-1000-0560
STAR KNC -16/20 CNC LATHE FANUC A13B-0129-C038 TERMINAL UNIT A13B0129C038
SPINDLE RPM CONTROL PANEL FANUC CABINET
SPINDLE MOTOR FANUC AC TERMINAL BOX COVER A290-1003-X431 CNC
Soshin EMI Filter off of Fanuc Robocut Wire EDM, Mod # LF3020D-Y1,       
Soshin EMI Filter off of Fanuc Robocut Wire EDM, Mod # LF3005A-Y1,       
SORENSEN PTM28-6.0 POWER SUPPLY 6A 29V PTM2860 FANUC MISC PALLET 26
Siemens TI 305-05N , DirectLogic D3-16ND2-1 , Koyo E-05N or GE Fanuc IC610MDL107
Siemens Sinumerik Fanuc Pulse Generator A860-0201-T002
Shinano / Fanuc Tape Reader Motor A90L-0001-0068,       , WARRANTY
SET OF (2) Makino Fanuc System 11M Model A Instruction Manual _ SE85-008/E
Schwei?robotersteuerung Fanuc Operator Panel
SANYO REMEX FANUC CONTROL READER RLC174-1B, RLC172-4, RLC170-5
Sanyo / Fanuc Control Reader Board, RLC172-4, RLC174-2, RLC170-5,       
Sanyo / Fanuc Control Reader Board, RLC172-4, RLC170-5,       , WARRANTY
RX-740, GE FANUC IC693ACC336A AUXILIARY TERMINAL BOARD W/ IC693CBL324A CABLE
ROKU-ROKU VERTIMAC-O CNC FANUC PERMANENT MAGNET MOTOR 5N-2000M & A860-0300-T001
RIBON CABLES 2040-T107 LOT OF 4 LONG FANUC ROBOT LR MATE 2001
REPLACEMENT PULLEY FOR FADAL CNC MODEL PUL-0114 PULLEY MOTOR FANUC (I,01-02)
REPAIRED FANUC A05B-2351-C201 BRAKE RELEASE UNIT MISSING COVER A05B2351C201
RENISHAW A-4012-0584 FANUC-B CONTACT TOOL SETTING SOFTWARE *     *
REM GE Fanuc IC600CB504A Internal Memory Card, WARRANTY
RELAY PANEL A04B-0018-C204 A04B0018C204 FUJITSU FANUC CNC VERT MILL
RECONDITIONED FANUC DAUGHTER BOARD (A20B-2902-0070//04)
RECONDITIONED FANUC BACK PLANE BOARD A20B-2001-0980/01A
RECONDITIONED FANUC BACK PANEL ( A20B-2100-0220 )
Reactor Transber 75A 3PH Fanuc CNC
Quantity 3 GE FANUC 90-70 IC697ACC702A IC697ACC702 TERM.
QTY 2-Fanuc Power Input Cable 4005-T215 #L4R203 Y-13X018034 - AWM 2464 VW-1
PRATT WHITNEY WIRE EDM W1 FANUC A20B-1004-0340 A350-1004-T342 CNC BOARD
PRATT WHITNEY WIRE EDM FANUC A04B-0215-C215 A80L-0001-0495 A04B-0215-C215-01
PRATT WHITNEY EDM W1 FANUC RESISTOR UNIT A04B-0220-C412 IWAKI NCRH80V NCRH200V
PRATT WHITNEY EDM W1 FANUC A20B-1003-0940 A350-1003-T932 A04B-0222-C409
PORTER PEERLESS 183-12-0106-0 DC SERVO MOTOR
PLC Ge Fanuc Base espansione 10 slot IC693CHS392F
PLC Ge Fanuc Base 10 slot Typ IC693CHS391
PLC GE FANUC 90 30 IC693PWR325 24/48 Vcc
PLC GE FANUC 90 30 IC693PWR322 24 Vcc
PLC GE FANUC 90 30 IC693MDR390
PLC GE FANUC 90 30 IC693MDL753
PLC GE FANUC 90 30 IC693MDL390 Output
PLC GE FANUC 90 30 IC693CMM302
PLC GE FANUC 90 30 IC693ALG442B
PLC GE FANUC 90 30 IC693ALG390
PLC GE FANUC 90 30 HE693ASC900
PLC GE FANUC 90 30 Centro programmazione e riparazione
PCB Circuit Board, A20B-2100-0220/03A
Original Fanuc 6T-Model "C" Maintenance Manual B-5320