private void createLoader()
{
if (this._loader == null)
{
this._loader = (AdsSymbolLoader)this.OnCreateLoader();
}
}
private ISymbolLoader OnCreateLoader()
{
if (!this._session.IsConnected)
{
throw new SessionNotConnectedException("Cannot create symbol loader!", this._session);
}
this._loader = this._session.Connection.CreateSymbolLoader(this._session, this._session.Settings.SymbolLoader);
return(this._loader);
}
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);
}
