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ronkang
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樓主  發(fā)表于: 2013-10-15 19:37
硬件連接:224XP+Smart Line ,224XP無(wú)電池卡
問(wèn)題:
1.如果沒(méi)有電池卡,是不是實(shí)時(shí)時(shí)鐘做了也沒(méi)有用?因為Smart無(wú)掉電保存;PLC4天不開(kāi)機的話(huà),時(shí)鐘也不走了。
2.如果沒(méi)有電池卡的話(huà),V存儲區如何永久保存?手冊上說(shuō)可以寫(xiě)入EEPROM永久保存,即使用SMB31、SMW32,或者在數據塊中寫(xiě)入初始值。
但是問(wèn)題又來(lái)了,
如果采用在數據塊中寫(xiě)入初始值,電容掉電后,V存儲區自動(dòng)寫(xiě)入初始值,只是很多工藝參數工人需要隨時(shí)調整,一旦電容掉電,很多參數還得重新修改。
如果采用寫(xiě)入EEPROM方式,參數少還好辦。參數多、不連續、數據類(lèi)型又不一樣,一個(gè)一個(gè)寫(xiě)入EEPROM又麻煩。網(wǎng)上說(shuō)有這方面的庫文件,可是又找不到。
急死人。忘高人指點(diǎn)!謝謝!
wwcwwc
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1樓  發(fā)表于: 2013-10-16 09:06
還是加一個(gè)電池卡吧,這樣省事。

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