public static tcFunctionResult tcWriteData(int index, object data)
{
if (!tcClient.IsConnected)
{
LogMessage(string.Format("Error\t: {0}", "Attempted to write to PLC when not connected"));
return(tcFunctionResult.TC_NOT_CONNECTED);
}
if (index > tcVarList.Count || index < 0)
{
LogMessage(string.Format("Error\t: {0}", "Attempted to access a value outside the list"));
return(tcFunctionResult.TC_VARLIST_OUTOFBOUND);
}
AdsStream _DataStrem = new AdsStream(tcVarList[index].DataSize);
AdsBinaryWriter tcStreamWriter = new AdsBinaryWriter(_DataStrem);
try
{
switch (tcVarList[index].VariableType.ToLower())
{
case "bool":
tcStreamWriter.Write((bool)data);
tcClient.Write(tcVarList[index].Handle, _DataStrem);
break;
case "arbool":
break;
case "int":
break;
case "arint":
break;
case "string":
break;
case "real":
break;
case "lreal":
break;
}
tcStreamWriter.Close();
}
catch (Exception ex)
{
LogMessage(string.Format("Error at writing data {0}\t: {1}", index.ToString(), ex.Message));
return(tcFunctionResult.TC_FAIL_TO_WRITE_DATA);
}
finally
{
tcStreamWriter.Close();
}
return(tcFunctionResult.TC_SUCCESS);
}
private void buttonFalse_Click(object sender, RoutedEventArgs e)
{
using (var client = new TwinCAT.Ads.TcAdsClient())
{
try
{
client.Connect(851);
// creates a stream with a length of 4 byte
AdsStream ds = new AdsStream(4);
BinaryWriter bw = new BinaryWriter(ds);
ds.Position = 0;
bw.Write(Convert.ToInt32(textBox.Text));
// writes a DINT to PLC
client.Write(0x4020, 0x0001, ds);
//client.WriteSymbol("MyGVL.MyBoolVar", false, reloadSymbolInfo: true);
client.WriteSymbol("P_Motion2.ati_xStart", false, reloadSymbolInfo: true);
client.Dispose();
}
catch (TwinCAT.Ads.AdsErrorException ex)
{
MessageBox.Show("PLC Control Error: \r\n\r\n" + ex.Message);
}
catch (System.FormatException ex)
{
textBoxPLCSetPosition.Text = "0";
MessageBox.Show("Invalid float value for Position. ErrMsg: \r\n\r\n" + ex.Message);
}
}
}
