1747-PCIS
1747-PCIS
Triconex 4000042-320
MT304A1-E2C3
有極強的自檢及保護功能。
①故障檢測——軟件定期地檢測外界環(huán)境，如掉電、欠電壓、鋰電池電壓過低及強干擾信號等。以便及時進行處理。
②信息保護與恢復(fù)——當偶發(fā)性故障條件出現(xiàn)時，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)原來的程序工作。所以，PLC在檢測到故障條件時，立即把現(xiàn)狀態(tài)存入存儲器，軟件配合對存儲器進行封閉，禁止對存儲器的任何操作，以防存儲信息被沖掉。
③設(shè)置警戒時鐘WDT（看門狗）——如果程序每循環(huán)執(zhí)行時間超過了WDT規(guī)定的時間，預(yù)示了程序進入死循環(huán)，立即報警。
④加強對程序的檢查和校驗——一旦程序有錯，立即報警，并停止執(zhí)行。
⑤對程序及動態(tài)數(shù)據(jù)進行電池后備——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號正榮潤園1號樓1205室
PLC的出廠試驗項目中，有一項就是抗干擾試驗。它要求能承受幅值為1000V，上升時間1nS，脈沖寬度為1μS的干擾脈沖。一般，平均故障間隔時間可達幾十萬～上千萬小時；制成系統(tǒng)亦可達4～5萬小時甚至更長時間。
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