WINCC6.2 OLE DB数据库访问过程值归档

2020年11月1日下午2:48 • SIMATIC WinCC

用OLE DB访问WINCC6.2过程值归档,调试结果提示:[DBNETLIB][CONNECTIONOPEN()).]SQL SERVER DOES NOT EXIST OR ACCESS DENIED.错误,若按照书上的代码,则提示:[DBNETLIN]CONNECTIONOPEN(INVALID CONNECTION()).]INVALID CONNECTION.请帮我看看问题出在哪里?源代码如下:
Private Sub EXECUTE_Click()

Dim sPro As String
Dim sDsn As String
Dim sSer As String
Dim sCon As String
Dim sSql As String
Dim sUID As String
Dim sPwd As String
Dim sIniCata As String
Dim conn As Object ‘ADODB.Connection
Dim oRs As Object ‘ADODB.Recordset
Dim oCom As Object ‘ADODB.Command
Dim oItem As ListItem
Dim m, n, s

sPro = "Provider=’WINCCOLEDBProvider’;"
sDsn = "Catalog=’CC_Win_T_09_06_24_10_09_58R’;"
sSer = "Data Source=’TUOWEI-CH\WINCC’"
sCon = sPro + sDsn + sSer
sSql = "TAG:R,’PVArchive\Tag_1′,’2009-06-28 09:00:00.000′,’2009-06-30 11:00:00.000’"

‘MsgBox"Open With:" &vbCr & sCon & vbCr & sSql &vbCr Persist Security Info=False; user id=;password=;
‘Provider=SQLOLEDB.1;Password=tuoweiautomatic;Persist Security Info=True;User ID=sa;Initial Catalog=CC_suidao_09_06_24_09_42_34R;Data Source=TUOWEI-CH\wincc

Set conn = CreateObject("ADODB.Connection") ‘T_09_06_"
conn.ConnectionString = "Provider=WinCCOLEDBProvider.1;Data Source=CC_Win_T_09_06_24_10_09_58R;Catalog=TUOWEI-CH\wincc;User ID=sa;Password=;"

     ‘conn.ConnectionString = sCon
     conn.CursorLocation = 3
     conn.Open

Set oRs = CreateObject("ADODB.Recordset")

Set oCom = CreateObject("ADODB.Command")
oCom.CommandType = 1

Set oCom.ActiveConnection = conn
oCom.CommandText = sSql

Set oRs = oCom.EXECUTE
m = oRs.Fields.Count

ListView1.ColumnHeaders.Clear
ListView1.ColumnHeaders.Add , , CStr(oRs.Fields.Item(1).Name), 140
ListView1.ColumnHeaders.Add , , CStr(oRs.Fields.Item(1).Name), 70
ListView1.ColumnHeaders.Add , , CStr(oRs.Fields.Item(1).Name), 70

If (m > 0) Then
  oRs.MoveFirst
  n = 0
  Do While Not oRs.EOF
  n = n + 1
  s = Left(CStr(oRs.Fields(1).Value), 23)
  Set oItem = ListView1.ListItems.Add()

  oItem.Text = Left(CStr(oRs.Fields(1).Value), 23)
  oItem.SubItems(1) = FormatNumber(oRs.Fields(2).Value, 4)
  oItem.SubItems(2) = FormatNumber(oRs.Fields(3).Value)

  If (n > 1000) Then Exit Do
  oRs.MoveNext
  Loop
  oRs.Close
  Else
  End If
  Set oRs = Nothing
  conn.Close
  Set conn = Nothing
  MsgBox "Open With:"

End Sub

专家建议

请参考
http://www.ad.siemens.com.cn/download/searchResult.aspx?searchText=A0048
A0048“WinCC V6 使用技巧”演示项目及使用说明(2006.08.18)
DemoV6画面PA7_bld04.pdl，PA7_bld05.pdl中vbs访问变量归档的方法

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原创文章，作者：more0621，如若转载，请注明出处：https://www.zhaoplc.com/plc311105.html

WINCC6.2 OLE DB数据库访问过程值归档

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