Sample script and output

Read buffered data from the VTQ buffer

dim vtq as ValueTimeQuality;

dim strWriter as System.IO.StreamWriter;

LogMessage("Script Start");

strWriter = System.IO.File.AppendText("C:\\sample.txt");

FOR EACH vtq in me.UD1.buffer

strWriter.WriteLine("DAS value is "+vtq.value);

strWriter.WriteLine("Time stamp of the value is "+vtq.time);

strWriter.WriteLine("Quality of the value is "+vtq.quality);

strWriter.WriteLine("--------------------------------------");

‘Below messages will be logged to the Logviewer (or OCMC)

LogMessage("DAS value is "+vtq.value);

LogMessage("Time stamp of the value is "+vtq.time);

LogMessage("Quality of the value is "+vtq.quality);

next;

strWriter.Flush();

strWriter.Close();

LogMessage("Script End");

For each VTQ in this script sample, Value, Timestamp, and Quality are written to the sample.txt file.

For purposes of illustration, UD1 in the script sample is a buffer-enabled Integer attribute with input extended to a DDE item.

Sample output text written to text file

DAS value is 2

Time stamp of the value is 7/15/2010 11:28:54.880 AM

Quality of the value is 192

Sample output text written to logger

Info ScriptRuntime UD1.S1: Script Start

Info ScriptRuntime UD1.S1: DAS value is 2

Info ScriptRuntime UD1.S1: Time stamp of the value is 7/15/2010 11:28:54.880 AM

Info ScriptRuntime UD1.S1: Quality of the value is 192

Info ScriptRuntime UD1.S1: Script End