531X300CCHACM1

问：我们STEP7编程软件库里有一些如FC33 FC40 FC105，等等，但是我们使用时是不是要注意先看看库里有没有这个号，如果有，证明这个块号如33 40 105不可以使用，如果这样子的话，我觉得创建功能块那不是很麻烦吗。万一冲突了就弄不清楚，是不是可以用同样的编号也可以作普通的功能FC使用？？
答：不需要。
1、库中的FC有特殊功能，调用特殊功能的FC要从库里调用。
2、直接编号的是普通的的FC,没有特殊功能。
3、如果调用库中的FC时出现编号相同是可重命名用，特殊功能不消失。

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