6DD1683-0CH0

6DD1683-0CH0

Heidenhain ROD1424039B1250

SUB818OPTIONSBDB

有極強(qiáng)的自檢及保護(hù)功能。

①故障檢測(cè)——軟件定期地檢測(cè)外界環(huán)境，如掉電、欠電壓、鋰電池電壓過(guò)低及強(qiáng)干擾信號(hào)等。以便及時(shí)進(jìn)行處理。

②信息保護(hù)與恢復(fù)——當(dāng)偶發(fā)性故障條件出現(xiàn)時(shí)，不破壞PLC內(nèi)部的信息。一旦故障條件消失，就可恢復(fù)正常，繼續(xù)原來(lái)的程序工作。所以，PLC在檢測(cè)到故障條件時(shí)，立即把現(xiàn)狀態(tài)存入存儲(chǔ)器，軟件配合對(duì)存儲(chǔ)器進(jìn)行封閉，禁止對(duì)存儲(chǔ)器的任何操作，以防存儲(chǔ)信息被沖掉。

③設(shè)置警戒時(shí)鐘WDT（看門狗）——如果程序每循環(huán)執(zhí)行時(shí)間超過(guò)了WDT規(guī)定的時(shí)間，預(yù)示了程序進(jìn)入死循環(huán)，立即報(bào)警。

④加強(qiáng)對(duì)程序的檢查和校驗(yàn)——一旦程序有錯(cuò)，立即報(bào)警，并停止執(zhí)行。

⑤對(duì)程序及動(dòng)態(tài)數(shù)據(jù)進(jìn)行電池后備——停電后，利用后備電池供電，有關(guān)狀態(tài)及信息就不會(huì)丟失。

聯(lián)系電話：0591-62182520    *    13696852881
聯(lián)系QQ：1273632994
公司傳真：0591-62032566
公司全稱：
福州卓凱電子科技有限公司
公司地址：
福建省福州市閩侯西江濱大道77號(hào)正榮潤(rùn)園1號(hào)樓1205室

PLC的出廠試驗(yàn)項(xiàng)目中，有一項(xiàng)就是抗干擾試驗(yàn)。它要求能承受幅值為1000V，上升時(shí)間1nS，脈沖寬度為1μS的干擾脈沖。一般，平均故障間隔時(shí)間可達(dá)幾十萬(wàn)～上千萬(wàn)小時(shí)；制成系統(tǒng)亦可達(dá)4～5萬(wàn)小時(shí)甚至更長(zhǎng)時(shí)間。

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