‘在做的PLC项目中，需要将PLC中的所有数据提出来，我们知道符号表中定义的变量可能是不全的，而且有些符号表中有，而程序中没有使用。交叉引用表中的数据是全的但 ’是没有注释，那我可以写个程序根据交叉引用表来修改符号表（符号表中有交叉引用中没有的删掉，交叉引用中有而符号表中没有的在符号表中加上）
‘下面是程序：
Sub Split_String()'在使用此程序前，请先将符号表中的数据和交叉引用中的数据分别排好序 Dim a Dim myChars(1 To 11) Dim k, n As Integer Dim s As String For i = 1 To [b65536].End(xlUp).Row'这里是从第一行到有数据的最后一行 a = Split(Cells(i, 1).Value, "(")'根据"("分割字符串，因为交叉引用表中的第一列是这样的I 0.0 (QF1) Cells(i, 2).Value = a(0)'提取出前面的I0.0放到B列 Cells(i, 2) = Application.WorksheetFunction.Substitute(Cells(i, 2), " ", "") //将B列中的空格去掉 Next For i = 1 To [b65536].End(xlUp).Row'这里是将"I0.0"这样的变量统一成"I 0.0"这样的格式，否则对比时会出现错误（重点在于固定长度） For n = 1 To 11 myChars(n) = Mid(Worksheets("Sheet2").Cells(i, 2), n, 1) If myChars(n) = "." Then k = n End If Next For j = 11 To 3 Step -1 myChars(j) = myChars(j - 1) Next myChars(2) = " " For j = 11 - k To 3 Step -1 For n = 11 To 3 Step -1 myChars(n) = myChars(n - 1) Next Next s = Join(myChars, "") Worksheets("Sheet2").Cells(i, 2) = s Next For i = 1 To [b65536].End(xlUp).Row'为了不改动原数据将表1中的地址栏从B列复制到F列 Worksheets("Sheet1").Cells(i, 6) = Application.WorksheetFunction.Substitute(Worksheets("Sheet1").Cells(i, 2), " ", "") Next For i = 1 To [b65536].End(xlUp).Row'同上，整理格式，统一成一共11个字节 For n = 1 To 11 myChars(n) = Mid(Worksheets("Sheet1").Cells(i, 6), n, 1) If myChars(n) = "." Then k = n End If Next For j = 11 To 3 Step -1 myChars(j) = myChars(j - 1) Next myChars(2) = " " For j = 11 - k To 3 Step -1 For n = 11 To 3 Step -1 myChars(n) = myChars(n - 1) Next Next s = Join(myChars, "") Worksheets("Sheet1").Cells(i, 6) = s Next For i = 1 To [b65536].End(xlUp).Row If Worksheets("Sheet2").Cells(i, 2) > Worksheets("Sheet1").Cells(i, 6) Then If Worksheets("Sheet1").Cells(i, 6) = "" Then Exit For Else Worksheets("Sheet1").Rows(i).Delete i = i - 1 End If ElseIf Worksheets("Sheet2").Cells(i, 2) < Worksheets("Sheet1").Cells(i, 6) Then Worksheets("Sheet1").Rows(i).Insert Worksheets("Sheet1").Cells(i, 2) = Worksheets("Sheet2").Cells(i, 2) Worksheets("Sheet1").Cells(i, 6) = Worksheets("Sheet2").Cells(i, 2) Else Worksheets("Sheet2").Cells(i, 3) = 1 End If NextEnd Sub
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