//send to instrument by visacom
private string send_to_instrument(string fullcmd,string address,string cmd, IMessage ioDmm,int delay = 0)
{
WriteTraceText(fullcmd);
//IVisaSession basesession = null;
//IMessage talksession = null;
string strRd = "";
string instrumentAddress = address;
//lock
//this.WriteTraceText("\n");
lock (_lock_Instrument)
{
ioDmm.Clear();
ioDmm.WriteString(cmd);
if (delay != 0 && delay > 500)
Thread.Sleep(delay);
else
Thread.Sleep(500);
if (cmd.Contains("?"))
{
for (int i = 0; i < 5; i++)
{
try
{
strRd = ioDmm.ReadString(4069);
break;
}
catch (Exception exp)
{
ioDmm.Clear();
if (i != 9)
{
Thread.Sleep(200);
continue;
}
else
{
WriteErrorText("write/read to instrumen by visacom error: " + exp.Message);
throw new Exception(exp.Message);
}
}
}
}
}
strRd = strRd.TrimEnd('\n');
return strRd;
}