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福州聚福興自動(dòng)化有限公司
公司理念:做思想巨人,做行動(dòng)的鐵人,奉行把個(gè)人的發(fā)展與公司的發(fā)展做到有機(jī)的結(jié)合的共同價(jià)值觀。我們發(fā)揮公司多年積累的優(yōu)勢(shì)與有利條件,以效益為中心,以改革促發(fā)展,以創(chuàng)新求進(jìn)步,加快發(fā)展步伐,逐步實(shí)現(xiàn)“創(chuàng)造大眾的信心與價(jià)值,造福于大眾富裕與安寧”的公司長(zhǎng)期發(fā)展愿景。
基于現(xiàn)場(chǎng)總線的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)總線連網(wǎng)通訊有完整解決方案,無(wú)須用戶做太多工作。
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;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)線面臨的大挑戰(zhàn)。
FANUC系統(tǒng)對(duì)于總線通訊、總線接入從站采取市場(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)于非總線研究的用戶來(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
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