diff --git a/scr/FSI.BT.IR.Plc.TimeSync/SyncPlcTime.cs b/scr/FSI.BT.IR.Plc.TimeSync/SyncPlcTime.cs
index 7163db6..37290a1 100644
--- a/scr/FSI.BT.IR.Plc.TimeSync/SyncPlcTime.cs
+++ b/scr/FSI.BT.IR.Plc.TimeSync/SyncPlcTime.cs
@@ -7,8 +7,13 @@ namespace FSI.BT.IR.Plc.TimeSync
 {
     internal class SyncPlcTime : IPlc
     {
-        private Logger _log = LogManager.GetCurrentClassLogger();
-        private const string DATE_TIME_FORMAT = "dd.MM.yyyy HH:mm:ss.fff";
+        #region Constants
+
+        private const string DATE_TIME_FORMAT = "dd.MM.yyyy HH:mm:ss.fff"; // Zeitformat
+
+        #endregion
+
+        private Logger _log = LogManager.GetCurrentClassLogger(); // Nlog
 
         public SyncPlcTime(IPlc plc)
         {
@@ -23,85 +28,137 @@ namespace FSI.BT.IR.Plc.TimeSync
             Enable = plc.Enable;
         }
 
+        /// <summary>
+        /// Name
+        /// </summary>
         public string Name { get; set; }
 
+        /// <summary>
+        /// Beschreibung
+        /// </summary>
         public string Description { get; set; }
 
+        /// <summary>
+        /// IP-Adresse
+        /// </summary>
         public string Adress { get; set; }
 
+        /// <summary>
+        /// Rack-Nummer
+        /// </summary>
         public int Rack { get; set; }
 
+        /// <summary>
+        /// Slot-Nummer
+        /// </summary>
         public int Slot { get; set; }
 
+        /// <summary>
+        /// Update-Intervall, in der die Zeit überprüft werden soll.
+        /// </summary>
         public int UpdateIntervall { get; set; }
 
+        /// <summary>
+        /// Zeitdifferenz, ab der die SPS-Zeit angepasst werden soll.
+        /// </summary>
         public int TimeDifference { get; set; }
 
+        /// <summary>
+        /// Locale Zeit wird an die SPS gesendet - nicht UTC-Zeit
+        /// </summary>
         public bool LocalTime { get; set; }
 
+        /// <summary>
+        /// Soll SPS-Zeit synchronisiert werden
+        /// </summary>
         public bool Enable { get; set; }
 
+        /// <summary>
+        /// NTP-Server Adresse
+        /// </summary>
         public string NtpServer { get; set; }
-        
+
         public async Task Snyc(CancellationToken cancellationToken) =>
            await Task.Run(async () =>
            {
+               var plc = new S7Client(); // SPS-Verbindung
+               var client = new NtpClient(NtpServer); // NTP-Client
+               NtpClock clock = client.Query(); // NTP-Client Uhrzeit
+               var plcDateTime = new DateTime(); // Uhrzeit SPS
+               DateTime ntpDateTime; // Uhrzeit NTP-Client
+
                while (!cancellationToken.IsCancellationRequested)
                {
-                   var plc = new S7Client();
-
-                   var connectionRslt = plc.ConnectTo(Adress, Rack, Slot);
-
-                   if (connectionRslt == 0)
+                   try
                    {
-                       _log.Debug(Name + " Verbindung hergestellt.");
+                       // Verbindung mit SPS-Aufbauen
+                       var connectionRslt = plc.ConnectTo(Adress, Rack, Slot);
+
+                       // Verbindungsstatus überprüfen
+                       if (connectionRslt == 0) // Verbindung i.O.
+                       {
+                           _log.Debug(Name + " Verbindung hergestellt.");
+                       }
+                       else // Verbindung n.i.O.
+                       {
+                           _log.Error(Name + " Verbindung nicht hergestellt.");
+                           _log.Error(Name + " Fehler: " + plc.ErrorText(connectionRslt));
+                           await Task.Delay(UpdateIntervall, cancellationToken); // Warten bis zum nächsten Verbindungsversuch (Zeiten aus config.json)
+                           continue;
+                       }
                    }
-                   else
+                   catch (Exception ex)
                    {
-                       _log.Error(Name + " Verbindung nicht hergestellt.");
-                       _log.Error(Name + " Fehler: " + plc.ErrorText(connectionRslt));
-                       await Task.Delay(UpdateIntervall, cancellationToken);
-                       continue;
+                       _log.Error(Name + " " + ex.Message);
                    }
-                
-                   var plcDateTime = new DateTime();
-                   plc.GetPlcDateTime(ref plcDateTime);
+
+                   plc.GetPlcDateTime(ref plcDateTime); // Uhrzeit aus SPS auslesen
                    _log.Debug(Name + " SPS Zeit (aktuell): " + plcDateTime.ToString(DATE_TIME_FORMAT));
 
-                   var client = new NtpClient(NtpServer);
-                   NtpClock clock = client.Query();
-
-                   DateTime ntpDateTime;
-
-                   if (LocalTime)
+                   if (LocalTime) // lokale Zeit/Ortszeit
                    {
-                       _log.Debug(Name + " UTC Zeit: " + clock.Now.ToString(DATE_TIME_FORMAT));
-                       ntpDateTime = clock.Now.DateTime;
+                       _log.Debug(Name + " Ortszeit: " + clock.Now.ToString(DATE_TIME_FORMAT));
+                       ntpDateTime = clock.Now.DateTime; // lokale Zeit/Ortszeit von NTP-Server
                    }
-                   else
+                   else // UTC - Zeit
                    {
-                       _log.Debug(Name + " Ortszeit: " + clock.UtcNow.ToString(DATE_TIME_FORMAT));
-                       ntpDateTime = clock.UtcNow.DateTime;
+                       _log.Debug(Name + " UTC-Zeit: " + clock.UtcNow.ToString(DATE_TIME_FORMAT));
+                       ntpDateTime = clock.UtcNow.DateTime; // UTC-Zeit von NTP-Server
                    }
 
+                   // Zeitdiffernz zwischen SPS-Zeit und Zeit von NTP-Server berechnen
                    var timeSpan = Math.Abs((plcDateTime - ntpDateTime).TotalMilliseconds);
-                   if (TimeDifference > 0 && timeSpan >= TimeDifference)
+
+                   if (
+                        TimeDifference > 0 // Zeitdifferenz aus Einstellungen > 0 ms
+                        && timeSpan >= TimeDifference // Zeitdifferenz überprüfung
+                   )
                    {
                        _log.Debug(Name + " Zeitdifferenz " + timeSpan + " ms überschritten");
+                       var temp = plc.SetPlcDateTime(ntpDateTime); // Zeit an SPS senden
                        _log.Info(Name + " neue Zeit: " + ntpDateTime.ToString(DATE_TIME_FORMAT));
-                       var temp = plc.SetPlcDateTime(ntpDateTime);
                    }
                    else if (TimeDifference == 0)
                    {
+                       var temp = plc.SetPlcDateTime(ntpDateTime); // Zeit an SPS senden
                        _log.Info(Name + " neue Zeit: " + ntpDateTime.ToString(DATE_TIME_FORMAT));
-                       var temp =  plc.SetPlcDateTime(ntpDateTime);
                    }
 
-                   plc.Disconnect();                  
+                   plc.Disconnect(); // Verbindung zur SPS trennen
                    _log.Debug(Name + " Verbindung getrennt.");
-                   
-                   await Task.Delay(UpdateIntervall, cancellationToken);
+
+                   _log.Debug(Name + " Start Task-Wartezeit");
+
+                   try
+                   {
+                       await Task.Delay(UpdateIntervall, cancellationToken); // Warten bis zum nächsten Verbindungsversuch (Zeiten aus config.json)
+                   }
+                   catch (Exception ex)
+                   {
+                       _log.Error(Name + " " + ex.Message);
+                   }
+                   _log.Debug(Name + " Ende Task-Wartezeit");
                }
-           }, cancellationToken);        
+           }, cancellationToken);
     }
 }
diff --git a/scr/FSI.BT.IR.Plc.TimeSync/nlog.config b/scr/FSI.BT.IR.Plc.TimeSync/nlog.config
index 9951845..f0c9006 100644
--- a/scr/FSI.BT.IR.Plc.TimeSync/nlog.config
+++ b/scr/FSI.BT.IR.Plc.TimeSync/nlog.config
@@ -12,7 +12,7 @@
 		<target xsi:type="File" 
 				name="logfile" 
 				fileName="d:/logs/${appName}/${appName}.log" 
-				archiveFileName ="d:/logs/{#}_${appName}.log" 
+				archiveFileName ="d:/logs/${appName}/{#}_${appName}.log" 
 				archiveNumbering ="Date" archiveEvery="Day" 
 				archiveDateFormat="yyyyMMdd"/>