1336-BDBMX3-SP63A
1336-BDBMX3-SP63A
鑒于可靠工作是PLC的重要特點,至關(guān)重要,故有關(guān)提高MTBF及降低MTTR的措施如何,以及PLC的MTBF與MTTR值也成為PLC性能的重要指標。
5.8經(jīng)濟指標
以上七條講的都是PLC的技術(shù)性能。其實,使用PLC,還要考慮經(jīng)濟指標。經(jīng)濟是基礎(chǔ),經(jīng)濟上不合算,不能帶來經(jīng)濟效益,使用PLC也就沒有基礎(chǔ)。所以,這個指標也是重要的。經(jīng)濟指標zui簡單的就是看價格。一般講,同樣技術(shù)性能的PLC,價格低其經(jīng)濟指標就好
此外,還要看供貨情況,供貨不及時,影響使用,價格即使低,也不一定就好;看技術(shù)服務(wù),資料不全,用戶出現(xiàn)問題得不到也不好。
對經(jīng)濟指標還要作綜合分析,要看使用了PLC能否帶來效益,然后,再分析使用哪家的PLC效益更好些。
備貨,備貨,降降降,火火火,火火火……
備貨,備貨,降降降,火火火,火火火……
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