private void ConnectPlc()
{
_activePlc = 0;
_activePorts = GetActivePlcPorts("127.0.0.1.1.1", 851);
_plcConnections.Clear();
ComboBoxPlc.Items.Clear();
SymbolListViewItems?.Clear();
foreach (int port in _activePorts)
{
PlcConnection plcCon = new PlcConnection(new AmsAddress($"127.0.0.1.1.1:{port}"));
plcCon.PlcConnectionError += PlcOnPlcConnectionError;
plcCon.Connect();
if (plcCon.Connected)
{
plcCon.Connection.AdsStateChanged += PlcAdsStateChanged;
plcCon.Connection.ConnectionStateChanged += PlcOnConnectionStateChanged;
plcCon.Connection.AmsRouterNotification += PlcOnAmsRouterNotification;
}
_plcConnections.Add(plcCon);
}
if (_plcConnections.Count == 0)
{
UpdateDumpStatus("No active PLCs found", Colors.Orange);
return;
}
if (_plcConnections[_activePlc].Connected)
{
UpdateDumpStatus("Retrieving symbols", Colors.GreenYellow);
PopulateListView();
}
// Populate Combobox
if (_plcConnections.Count > 0)
{
foreach (int activePort in _activePorts)
{
ComboBoxItem cbi = new ComboBoxItem();
cbi.Content = activePort.ToString();
ComboBoxPlc.Items.Add(cbi);
}
ComboBoxPlc.SelectedIndex = 0;
}
PlcConnected = _plcConnections[_activePlc].Connected;
ButtonDumpData.IsEnabled = PlcConnected;
}
private async Task ReadAll(PlcConnection plcCon)
{
// Stopwatch sw = Stopwatch.StartNew();
_symbolValues.Clear();
// Split up load in packages of 500 Variables at once. More would be faster but stresses the PLC more.
SymbolCollection symbolColl = new SymbolCollection();
int cnt = 0;
foreach (var symbol in plcCon.Symbols)
{
if (cnt >= 500)
{
SumSymbolRead sumSymbolRead = new SumSymbolRead(plcCon.Connection, symbolColl);
await Task.Run(() =>
{
object[] symbolValuesReturn = sumSymbolRead.Read();
_symbolValues.AddRange(symbolValuesReturn);
});
cnt = 0;
symbolColl = new SymbolCollection();
}
symbolColl.Add(symbol);
cnt++;
}
// Final sum symbol read for the rest in symbolColl
if (cnt != 0)
{
SumSymbolRead sumSymbolRead = new SumSymbolRead(plcCon.Connection, symbolColl);
await Task.Run(() =>
{
object[] symbolValuesReturn = sumSymbolRead.Read();
_symbolValues.AddRange(symbolValuesReturn);
});
}
// Debug.WriteLine($"Collecting data from PLC: {sw.Elapsed}");
}
