The following code sample reads data from another Historian Server using the Historian OLE
DB provider, and stores it in a destination tag. When using this example, specify the
username and
password.'connection and recordset variables
Dim Cnxn
Dim rsCurrentValueFromOtherServer
'open connection
Set Cnxn = CreateObject("ADODB.Connection")
'connect to default server using current username and password
'establish connection
Cnxn.Open "Provider=ihOLEDB.iHistorian.1;User Id=;Password="
'Create and open first Recordset using Connection execute
Set rsCurrentValueFromOtherServer = CreateObject("ADODB.Recordset")
'Get the value from the other server
Set rsCurrentValueFromOtherServer = Cnxn.Execute("select value from ihRawData
where SamplingMode=CurrentValue and tagname = Simulation00001")
'Set the result to the current value of other tag
Result=rsCurrentValueFromOtherServer("Value")
'Clean up
IF rsCurrentValueFromOtherServer.State = adStateOpen THEN
rsCurrentValueFromOtherServer.Close
END IF
IF Cnxn.State = adStateOpen THEN Cnxn.Close
END IF
Set rsCurrentValueFromOtherServer = Nothing
Set Cnxn = Nothing
Historian