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基于現(xiàn)場(chǎng)總線(xiàn)的FANUC 分布式控制
一問(wèn)題的提出
1 問(wèn)題的提出
1.1隨著網(wǎng)絡(luò)總線(xiàn)通訊技術(shù)的飛速發(fā)展，分布式控以其高可靠、易維護(hù)、布線(xiàn)施工簡(jiǎn)單等優(yōu)點(diǎn)，正在取代集中式控制。目前，流行的PROFIBUS 、CC-
FANUC對(duì)本公司的主站（NC系統(tǒng)）和從站（NC系統(tǒng)）用現(xiàn)場(chǎng)總線(xiàn)連網(wǎng)通訊有完整解決方案，無(wú)須用戶(hù)做太多工作。
但是，有些FANUC應(yīng)用系統(tǒng)的遠(yuǎn)程輸入/輸出（I/O）（如輔機(jī)、上下料物流滾道、冷卻系統(tǒng)、液壓）離FANUC NC系統(tǒng)距離太遠(yuǎn)。按傳統(tǒng)接入方法（1長(zhǎng)距離拉線(xiàn)；2用光纜連接現(xiàn)場(chǎng)的IO
SIEMENS的ET200 PROFIBUS從站、OMRON的DEVICENET遠(yuǎn)程接入從站和三菱CC
2 問(wèn)題的難點(diǎn)
第三方從站（SIEMENS ET200）接入到FANUC 主站是FANUC系統(tǒng)分布控制機(jī)加自動(dòng)線(xiàn)面臨的大挑戰(zhàn)。
FANUC系統(tǒng)對(duì)于總線(xiàn)通訊、總線(xiàn)接入從站采取市場(chǎng)化策略，只提供接口。在中國(guó)大陸流行的DEVICENET、PROFIBUS從站都可以用于FANUC主站系統(tǒng)上。用戶(hù)要采用分布式控制必須采用第三方產(chǎn)品，第三方產(chǎn)品和FANUC公司均不對(duì)對(duì)方產(chǎn)品提供技術(shù)服務(wù)，用戶(hù)要承擔(dān)無(wú)任何技術(shù)支持而失敗的巨大風(fēng)險(xiǎn)，所有工作由用戶(hù)自行負(fù)責(zé)完成。
DEVICENET、PROFIBUS從站接入FANUC主站是非常困難的。用戶(hù)須將從站的ESD或GSD相關(guān)參數(shù)輸入FANUC主站，F(xiàn)ANUC主站才識(shí)別有關(guān)從站。在沒(méi)有技術(shù)支持的條件下在含有數(shù)十萬(wàn)數(shù)據(jù)的ESD或GSD文件中找到FANUC需要的相關(guān)參數(shù)，對(duì)于非總線(xiàn)研究的用戶(hù)來(lái)說(shuō)是不可想象的，這是國(guó)內(nèi)非FANUC從站接入FANUC主站幾乎沒(méi)有先例的根本原因。
二 分布控制的方案
1 分布控制的方案
考慮到先進(jìn)性、可行性和我們目前的技術(shù)儲(chǔ)備，我們決定采用FANUC主站通過(guò)PROFIBUS連接FANUC從站+SIEMENS ET200從站的控制方案。參看圖1，F(xiàn)4-5、F1-2按狃站距主站太遠(yuǎn)，用ET200從站,單機(jī)電柜也有ET200從站，負(fù)責(zé)單機(jī)夾具IO。ET200從站直接由FANUC輸送主站控制。
SIEMENS ET200從站解決遠(yuǎn)程IO的接入和單機(jī)夾具IO接入，信號(hào)直接進(jìn)入FANUC主站，便于輸送的控制。FANUC從站和主站控制單機(jī)伺服軸和輸送伺服軸。
創(chuàng)新點(diǎn)和難點(diǎn)：SIEMENS ET200 PROFIBUS從站接入到FANUC PROFIBUS主站。
2 FANUC主站和FANUC從站、SIEMENS ET200從站信息交換
APW MCLEAN 28-0226-003 USPP 280226003
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APW McClean Electronic Enclosure Air Conditioner HB16 0916-013 NEW
LOT OF 6 APW OVERHEAD WARMER REMOTES & CABLES 76485
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Hoffman APW/McLean Electronic Air Cond M13-0116-G1014?H * * * WARRANTY * * *
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Bosch 016 545 14 32
NIB AMETEK 6" Pressure Gauge 126671 5801 600PSI 1/4 LM
NEW USG SOLFRUNT AMETEK PRESSURE GAUGE 0-30 PSI SB DIAPHRAGM 316L SST
Ametek Pressure Gauge 150894 4-1/2" -30 to 60 psi
AMETEK PRESSURE TRANSMITTER 88C002A2
AMETEK FORCE GAUGE GAGE MODEL T-10P-TC WITH FIXTURE
Lamb-Ametek #116158-01 36V 5.7 2 Stage Vacuum Motor
Ametek Hunter Spring L-5 Pound Force Gauge Gaug
LAMB AMETEK VACUUM MOTOR 116378-07 120 VOLTS 50/60 HZ
Ametek USG Vacuum/Pressur?e Gauge 170878
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V36D28L0800 REPLACES AMETEK MOTOR 116883-00 120 VOLTS
Ametek Arc-Loc Movement 0-2300 psi Solid Front Gauge
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Ametek Vacuum Gauge V1929 / 1929
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SV Allied Signal Aircraft Butterfly Valve P/N 978558-2-1
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ametek rotron 1.45amp 20000rpm 28vol fan
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USG Ametek Gauge 4-1/2" Liquid Filled
Bosch 016 545 14 32
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Bosch 016 545 14 32
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