public void LoadSymbols()
{
try
{
using (var adsClient = new AdsClient())
{
// connection
adsClient.Connect(new AmsAddress(_appOptions.Value.AMSNetId, _appOptions.Value.Port));
// get the symbol loader, FLAT mode
var symbolLoader = SymbolLoaderFactory.Create(adsClient, new SymbolLoaderSettings(SymbolsLoadMode.Flat));
if (symbolLoader != null)
{
_symbolCollection = symbolLoader.Symbols;
SymbolInfos = new BindableCollection <ISymbol>(_symbolCollection);
NotifyOfPropertyChange(() => SymbolInfos);
}
}
}
catch (ObjectDisposedException exDisposed)
{
Console.WriteLine("exception\n" + exDisposed.Message);
}
catch (InvalidOperationException exInvalid)
{
Console.WriteLine("exception\n" + exInvalid.Message);
}
catch (Exception ex)
{
Console.WriteLine("Undentified exception\n" + ex.Message);
}
}
private static void PrintSymbols(AdsClient client)
{
SymbolLoaderSettings settings = new SymbolLoaderSettings(TwinCAT.SymbolsLoadMode.VirtualTree);
ISymbolLoader loader = SymbolLoaderFactory.Create(client, settings);
var symbols = loader.Symbols;
PrintSymbols(symbols);
}
/// <summary>
/// Constructor - establishes connection and creates symbol loader
/// </summary>
/// <param name="AmsNetId">ADS Client AMS Net Id "x.x.x.x.x.x:port" (127.0.0.1.1.1:851)</param>
public AdsConnection(string AmsNetId)
{
_client = new TcAdsClient();
// connect ADS client
_client.Connect(AmsAddress.Parse(AmsNetId));
if (_client.IsConnected)
{
// create symbol loader
_symbolLoader = SymbolLoaderFactory.Create(_client,
new SymbolLoaderSettings(SymbolsLoadMode.VirtualTree));
}
}
private void UpdateSymbols(ConnectionState state)
{
if (state == TwinCAT.ConnectionState.Connected)
{
var loader = SymbolLoaderFactory.Create(Client, new SymbolLoaderSettings(SymbolsLoadMode.VirtualTree));
TreeViewSymbols = loader.Symbols;
var loader2 = SymbolLoaderFactory.Create(Client, new SymbolLoaderSettings(SymbolsLoadMode.Flat));
FlatViewSymbols = loader2.Symbols;
}
else
{
TreeViewSymbols = null;
}
}
private void UpdateSymbols(AdsState state)
{
if (state == TwinCAT.Ads.AdsState.Run)
{
logger.LogDebug($"Update symbols on beckhoff change to {state}");
var loader = SymbolLoaderFactory.Create(Client, new SymbolLoaderSettings(SymbolsLoadMode.Flat));
symbolsSubject.OnNext(loader.Symbols);
}
else
{
logger.LogDebug($"Deleting symbols on beckhoff state change to {state}");
symbolsSubject.OnNext(null);
}
}
public async Task Should_read_symbols_from_server()
{
using (var serverMock = new Mock(12347, "AdsServerMock"))
{
serverMock.RegisterReplay(@".\TestFiles\ReadSymbolsPort851.cap");
using (var client = new AdsClient())
{
// connect to our mocking server
client.Connect(serverMock.ServerAddress.Port);
if (client.IsConnected)
{
var symbolLoader = SymbolLoaderFactory.Create(client, new SymbolLoaderSettings(SymbolsLoadMode.Flat, TcAds.ValueAccess.ValueAccessMode.Default));
var symbols = await symbolLoader.GetSymbolsAsync(CancellationToken.None);
Assert.IsTrue(symbols.Succeeded);
}
}
}
}
private void RegisterSubscriptions()
{
try
{
// create client
_adsClient = new AdsClient();
// connection
_adsClient.Connect(new AmsAddress(_appOptions.AMSNetId, _appOptions.Port));
// get the symbol loader
_symbolLoader = SymbolLoaderFactory.Create(_adsClient, SymbolLoaderSettings.Default);
if (_symbolLoader == null)
{
return;
}
// symbol from appsetting.json
if (_appOptions.ValueSymbols.Count > 0)
{
for (int i = 0; i < _appOptions.ValueSymbols.Count; i++)
{
var currentValueSymbol = _appOptions.ValueSymbols[i];
// GetIValueSymbol
var res = GetIValueSymbol(_symbolLoader, currentValueSymbol);
if (res != null)
{
SubscribeIValueSymbol(res);
}
}
}
}
catch (ObjectDisposedException ex_objectDisposed)
{
//throw;
}
}
/// <summary>
/// Connect to PLC
/// </summary>
public void Connect()
{
// If already connected, disconnect first
if (Session != null && Connection.ConnectionState == ConnectionState.Connected)
{
Disconnect();
}
try
{
Session?.Dispose();
Session = new AdsSession(new AmsAddress(_address), SessionSettings.Default);
Connection = (AdsConnection)Session.Connect();
_symbolLoader = SymbolLoaderFactory.Create(Connection, _symbolLoaderSettings);
StateInfo stateInfo = Connection.ReadState();
AdsState state = stateInfo.AdsState;
if (state == AdsState.Run || state == AdsState.Stop)
{
Connected = true;
GetSymbols();
}
else
{
Disconnect();
}
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
string port = Session == null ? string.Empty : $"Port {Session.Port}: ";
OnPlcConnectionError(new PlcConnectionErrorEventArgs($"{port}{ex.Message}"));
Disconnect();
}
}
public void CopyPasteTestDynamic()
{
using (TcAdsClient client = new TcAdsClient())
{
client.Synchronize = false;
// Connect to the target device
client.Connect("164.4.4.112.1.1", 853);
// Usage of "dynamic" Type and Symbols (>= .NET4 only)
SymbolLoaderSettings settings = new SymbolLoaderSettings(SymbolsLoadMode.DynamicTree);
IAdsSymbolLoader dynLoader = (IAdsSymbolLoader)SymbolLoaderFactory.Create(client, settings);
// Set the Default setting for Notifications
dynLoader.DefaultNotificationSettings = new AdsNotificationSettings(AdsTransMode.OnChange, 200, 2000);
// Get the Symbols (Dynamic Symbols)
dynamic dynamicSymbols = ((IDynamicSymbolLoader)dynLoader).SymbolsDynamic;
dynamic adsPort = dynamicSymbols.TwinCAT_SystemInfoVarList._AppInfo.AdsPort;
// Access Main Symbol with Dynamic Language Runtime support (DLR)
// Dynamically created property "Main"
// dynamic symMain = dynamicSymbols.Main;
// Main is an 'VirtualSymbol' / Organizational unit that doesn't have a value
// Calling ReadValue is not allowed
// bool test = symMain.HasValue;
// dynamic invalid = symMain.ReadValue();
// Reading TaskInfo Value
// With calling ReadValue() a 'snapshot' of the Symbols Instance is taken
dynamic vTaskInfoArray = dynamicSymbols.TwinCAT_SystemInfoVarList._TaskInfo.ReadValue();
// Getting the Snapshot time in UTC format
DateTime timeStamp1 = vTaskInfoArray.UtcTimeStamp;
// Getting TaskInfo Symbol for Task 1
dynamic symTaskInfo1 = dynamicSymbols.TwinCAT_SystemInfoVarList._TaskInfo[1];
// Getting CycleCount Symbol
dynamic symCycleCount = symTaskInfo1.CycleCount;
// Take Snapshot value of the ApplicationInfo struct
dynamic vAppInfo = dynamicSymbols.TwinCAT_SystemInfoVarList._AppInfo.ReadValue();
// Get the UTC Timestamp of the snapshot
DateTime timeStamp2 = vAppInfo.UtcTimeStamp;
// Access the ProjectName of the ApplicationInfo Snapshot (type-safe!)
string projectNameValue = vAppInfo.ProjectName;
// Reading the CycleCount Value
uint cycleCountValue = symTaskInfo1.CycleCount.ReadValue(); // Taking a Value Snapshot
// Registering for dynamic "ValueChanged" events for the Values
// Using Default Notification settings
symCycleCount.ValueChanged += new EventHandler <ValueChangedArgs>(CycleCountValueChanged);
// Override default notification settings
symTaskInfo1.NotificationSettings = new AdsNotificationSettings(AdsTransMode.Cyclic, 500, 0);
// Register for ValueChanged event.
symTaskInfo1.ValueChanged +=
new EventHandler <ValueChangedArgs>(TaskInfo1ValueValueChanged); // Struct Type
Thread.Sleep(10000); // Sleep main thread for 10 Seconds
}
Console.WriteLine("CycleCount Changed events received: {0}", cycleCountEvents);
Console.WriteLine("taskInfo1 Changed events received: {0}", taskInfo1Events);
}
