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樓主  發(fā)表于: 2006-11-20 20:11
現在的PLC廠(chǎng)家也在不斷的解決被破解的問(wèn)題.我想為什么不能做得像PIC那樣呢.
就是PLC內部某芯片內做出一個(gè)類(lèi)似保險一樣的東西.在輸入程式的時(shí)候可以選擇燒毀與否
(如M99999999為開(kāi)時(shí))如果一旦燒毀那么這只PLC就只能輸入程式而不能輸出程式.而且是永久性的.
一個(gè)廠(chǎng)家做這樣的東西我想應該不難吧.........

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