diff --git a/TBF/Rig/Output/Printers/Enhanced/Printer.cs b/TBF/Rig/Output/Printers/Enhanced/Printer.cs
index cf90517f1..367bc1066 100644
--- a/TBF/Rig/Output/Printers/Enhanced/Printer.cs
+++ b/TBF/Rig/Output/Printers/Enhanced/Printer.cs
@@ -3,9 +3,10 @@
 ///
 using System;
 using System.Collections.Generic;
-using System.Drawing.Printing;
 using System.Globalization;
 using System.Threading;
+using Common;
+using Common.Forms;
 using Results.Output.Printers.Enhanced;
 using log4net;
 
@@ -31,8 +32,12 @@ namespace TBF.Rig.Output.Printers.Enhanced
 		IList<Results.WMeterRsltItemSpec> testItems;
 		string footer;
 
+        bool printingCompleted = false;
+        bool statusDlgShown = false;
+        ModelessForm modelessForm;
 
-		public Printer() { }
+
+        public Printer() { }
 
 		public Printer(Generic.IComponentCfg cfg)
 			: base(cfg)
@@ -43,10 +48,19 @@ namespace TBF.Rig.Output.Printers.Enhanced
         public override void Initialize()
         {
             ApplyConfig();
-            log.FatalFormat("{0} initialized: {1}", Name, this);
+            if (printerCfg.DebugLevel == DebugMode.Normal)
+            {
+                string message;
+                if (!PrinterStatus.IsOnline(printerCfg.PrinterName, out message)) throw new ApplicationException(message);
+                log.FatalFormat("{0} initialized: {1}", Name, this);
+            }
+            else
+            {
+                log.FatalFormat("{0} simulated: {1}", Name, this);
+            }
         }
 
-		void ApplyConfig()
+        void ApplyConfig()
 		{
 			header = string.IsNullOrEmpty(printerCfg.Header) ? string.Empty : printerCfg.Header.Replace("~", Environment.NewLine);
 			commonItems = Results.WMeterRsltItemSpec.FromStrArray(printerCfg.CommonItems);
@@ -132,38 +146,67 @@ namespace TBF.Rig.Output.Printers.Enhanced
 		/// <summary>Start this operation</summary>
 		public void Start()
 		{
-            CultureInfo oriCulture = Thread.CurrentThread.CurrentCulture;
-
-            if (printerCfg.Culture != Culture.system)
-            {
-                Thread.CurrentThread.CurrentCulture = new CultureInfo(printerCfg.Culture.ToString());
-            }
-
-            string documentName;
-            try
-            {
-                if (string.IsNullOrEmpty(printerCfg.DocName)) throw (new Exception());
-                documentName = string.Format(printerCfg.DocName, batch.StartTime, batch.EndTime, batch.BatchNr);
-            }
-            catch
-            {
-                documentName = string.Format("{0:yyyyMMdd-HHmm}", batch.EndTime);
-            }
-
-            PrintResults(batch, documentName);
-
-            Thread.CurrentThread.CurrentCulture = oriCulture;
+            printingCompleted = false;
+            statusDlgShown = false;
         }
 
 		/// <summary>Run this operation</summary>
 		/// <returns>Event.ResultsPrinted</returns>
 		public Event Run()
 		{
-			return Event.ResultsPrinted;
-		}
+            string message;
+            if (printingCompleted || printerCfg.DebugLevel != DebugMode.Normal)
+            {
+                return Event.ResultsPrinted;
+            }
+            else if (PrinterStatus.IsOnline(printerCfg.PrinterName, out message))
+            {
+                if (statusDlgShown)
+                {
+                    statusDlgShown = false;
+                    if (modelessForm != null) modelessForm.Close();
+                }
 
-		/// <summary>Stop this operation</summary>
-		public void Stop()
+                /// Printer is online  =>  Print results now
+                CultureInfo oriCulture = Thread.CurrentThread.CurrentCulture;
+                if (printerCfg.Culture != Culture.system)
+                {
+                    Thread.CurrentThread.CurrentCulture = new CultureInfo(printerCfg.Culture.ToString());
+                }
+
+                string documentName;
+                try
+                {
+                    if (string.IsNullOrEmpty(printerCfg.DocName)) throw (new Exception());
+                    documentName = string.Format(printerCfg.DocName, batch.StartTime, batch.EndTime, batch.BatchNr);
+                }
+                catch
+                {
+                    documentName = string.Format("{0:yyyyMMdd-HHmm}", batch.EndTime);
+                }
+
+                PrintResults(batch, documentName);
+
+                Thread.CurrentThread.CurrentCulture = oriCulture;
+
+                printingCompleted = true;
+                return Event.ResultsPrinted;
+            }
+            else
+            {
+                if (!statusDlgShown)
+                {
+                    statusDlgShown = true;
+                    modelessForm = new ModelessForm(message);
+                    new Thread(() => System.Windows.Forms.Application.Run(modelessForm)).Start();
+                }
+
+                return Event.Busy;
+            }
+        }
+
+        /// <summary>Stop this operation</summary>
+        public void Stop()
 		{
 		}
 
@@ -206,7 +249,7 @@ namespace TBF.Rig.Output.Printers.Enhanced
                 for (int i = 1; i <= printerCfg.NrOfCopies; i++)
                 {
                     string docName = string.Format(((printerCfg.NrOfCopies == 1) ? "{0}" : "{0}-{1}"), documentName, i);
-                    var pd = new Results.Output.Printers.Enhanced.EnhancedPrintDocument(batch, cfg, docName);
+                    var pd = new EnhancedPrintDocument(batch, cfg, docName);
                     if (!string.IsNullOrEmpty(printerCfg.PrinterName)) pd.PrinterSettings.PrinterName = printerCfg.PrinterName;
                     pd.Print();
                 }
diff --git a/TBF/Rig/Output/Printers/Label/Printer.cs b/TBF/Rig/Output/Printers/Label/Printer.cs
index 4738211a1..e906bbcd0 100644
--- a/TBF/Rig/Output/Printers/Label/Printer.cs
+++ b/TBF/Rig/Output/Printers/Label/Printer.cs
@@ -6,6 +6,8 @@ using System.Collections.Generic;
 using log4net;
 using System.Globalization;
 using System.Threading;
+using Common;
+using Common.Forms;
 using Results.Output.Printers.Label;
 
 namespace TBF.Rig.Output.Printers.Label
@@ -19,16 +21,13 @@ namespace TBF.Rig.Output.Printers.Label
 
 		public bool SupressPrinting { get { return (printerCfg.NrOfCopies == 0); } }
 
-		/// <summary> Data to print </summary>
-		Results.Entities.Batch batch;
+		Results.Entities.Batch batch;					/// Data to print
+        IList<Results.WMeterRsltItemSpec> commonItems;  /// Items to print
+		bool printingCompleted = false;
+        bool statusDlgShown = false;
+        ModelessForm modelessForm;
 
-		///
-		/// Items to print
-		///
-		IList<Results.WMeterRsltItemSpec> commonItems;
-
-
-		public Printer() { }
+        public Printer() { }
 
 		public Printer(Generic.IComponentCfg cfg)
 			: base(cfg)
@@ -39,10 +38,19 @@ namespace TBF.Rig.Output.Printers.Label
         public override void Initialize()
         {
             ApplyConfig();
-            log.FatalFormat("{0} initialized: {1}", Name, this);
+            if (printerCfg.DebugLevel == DebugMode.Normal)
+            {
+                string message;
+                if (!PrinterStatus.IsOnline(printerCfg.PrinterName, out message)) throw new ApplicationException(message);
+                log.FatalFormat("{0} initialized: {1}", Name, this);
+            }
+            else
+            {
+                log.FatalFormat("{0} simulated: {1}", Name, this);
+            }
         }
 
-		void ApplyConfig()
+        void ApplyConfig()
 		{
 			commonItems = Results.WMeterRsltItemSpec.FromStrArray(printerCfg.ItemsToPrint);
 		}
@@ -108,29 +116,58 @@ namespace TBF.Rig.Output.Printers.Label
 		/// <summary>Start this operation</summary>
 		public void Start()
 		{
-            CultureInfo oriCulture = Thread.CurrentThread.CurrentCulture;
+            printingCompleted = false;
+            statusDlgShown = false;
+        }
 
-            if (printerCfg.Culture != Culture.system)
-            {
-                Thread.CurrentThread.CurrentCulture = new CultureInfo(printerCfg.Culture.ToString());
-            }
-
-            foreach (var wm in batch.WaterMeters)
-            {
-                if (wm != null && (!printerCfg.GoodOnly || wm.Passed))
-                {
-                    PrintResults(batch, wm, string.Format("{0}-{1}", batch.BatchNr, wm.WMPosition));
-                }
-            }
-
-            Thread.CurrentThread.CurrentCulture = oriCulture;
-		}
-
-		/// <summary>Run this operation</summary>
-		/// <returns>Event.ResultsPrinted</returns>
-		public Event Run()
+        /// <summary>Run this operation</summary>
+        /// <returns>Event.ResultsPrinted</returns>
+        public Event Run()
 		{
-			return Event.ResultsPrinted;
+			string message;
+			if (printingCompleted || printerCfg.DebugLevel != DebugMode.Normal)
+			{
+                return Event.ResultsPrinted;
+            }
+            else if (PrinterStatus.IsOnline(printerCfg.PrinterName, out message))
+			{
+                if (statusDlgShown)
+                {
+                    statusDlgShown = false;
+                    if (modelessForm != null) modelessForm.Close();
+                }
+
+                /// Printer is online  =>  Print results now
+                CultureInfo oriCulture = Thread.CurrentThread.CurrentCulture;
+                if (printerCfg.Culture != Culture.system)
+                {
+                    Thread.CurrentThread.CurrentCulture = new CultureInfo(printerCfg.Culture.ToString());
+                }
+
+                foreach (var wm in batch.WaterMeters)
+                {
+                    if (wm != null && !wm.Disabled && wm.PrintLabel && (!printerCfg.GoodOnly || wm.Passed))
+                    {
+                        PrintResults(batch, wm, string.Format("{0}-{1}", batch.BatchNr, wm.WMPosition));
+                    }
+                }
+
+                Thread.CurrentThread.CurrentCulture = oriCulture;
+
+                printingCompleted = true;
+                return Event.ResultsPrinted;
+            }
+            else
+			{
+                if (!statusDlgShown)
+                {
+                    statusDlgShown = true;
+                    modelessForm = new ModelessForm(message);
+                    new Thread(() => System.Windows.Forms.Application.Run(modelessForm)).Start();
+                }
+
+                return Event.Busy;
+			}
 		}
 
 		/// <summary>Stop this operation</summary>
diff --git a/TBF/Rig/Output/Printers/MultiLabel/Printer.cs b/TBF/Rig/Output/Printers/MultiLabel/Printer.cs
index 605311c10..bfef0d6be 100644
--- a/TBF/Rig/Output/Printers/MultiLabel/Printer.cs
+++ b/TBF/Rig/Output/Printers/MultiLabel/Printer.cs
@@ -3,9 +3,11 @@
 ///
 using System;
 using System.Collections.Generic;
-using log4net;
 using System.Globalization;
 using System.Threading;
+using log4net;
+using Common;
+using Common.Forms;
 using Results.Output.Printers.MultiLabel;
 
 namespace TBF.Rig.Output.Printers.MultiLabel
@@ -27,8 +29,12 @@ namespace TBF.Rig.Output.Printers.MultiLabel
 		///
 		IList<Results.WMeterRsltItemSpec> commonItems;
 
+        bool printingCompleted = false;
+        bool statusDlgShown = false;
+        ModelessForm modelessForm;
 
-		public Printer() { }
+
+        public Printer() { }
 
 		public Printer(Generic.IComponentCfg cfg)
 			: base(cfg)
@@ -39,10 +45,19 @@ namespace TBF.Rig.Output.Printers.MultiLabel
         public override void Initialize()
         {
             ApplyConfig();
-            log.FatalFormat("{0} initialized: {1}", Name, this);
+            if (printerCfg.DebugLevel == DebugMode.Normal)
+            {
+                string message;
+                if (!PrinterStatus.IsOnline(printerCfg.PrinterName, out message)) throw new ApplicationException(message);
+                log.FatalFormat("{0} initialized: {1}", Name, this);
+            }
+            else
+            {
+                log.FatalFormat("{0} simulated: {1}", Name, this);
+            }
         }
 
-		void ApplyConfig()
+        void ApplyConfig()
 		{
 			commonItems = Results.WMeterRsltItemSpec.FromStrArray(printerCfg.ItemsToPrint);
 		}
@@ -112,27 +127,56 @@ namespace TBF.Rig.Output.Printers.MultiLabel
 		/// <summary>Start this operation</summary>
 		public void Start()
 		{
-            CultureInfo oriCulture = Thread.CurrentThread.CurrentCulture;
+            printingCompleted = false;
+            statusDlgShown = false;
+        }
 
-            if (printerCfg.Culture != Culture.system)
-            {
-                Thread.CurrentThread.CurrentCulture = new CultureInfo(printerCfg.Culture.ToString());
-            }
-
-            PrintResults(batch, string.Format("{0}", batch.BatchNr));
-
-            Thread.CurrentThread.CurrentCulture = oriCulture;
-		}
-
-		/// <summary>Run this operation</summary>
-		/// <returns>Event.ResultsPrinted</returns>
-		public Event Run()
+        /// <summary>Run this operation</summary>
+        /// <returns>Event.ResultsPrinted</returns>
+        public Event Run()
 		{
-			return Event.ResultsPrinted;
-		}
+            string message;
+            if (printingCompleted || printerCfg.DebugLevel != DebugMode.Normal)
+            {
+                return Event.ResultsPrinted;
+            }
+            else if (PrinterStatus.IsOnline(printerCfg.PrinterName, out message))
+            {
+                if (statusDlgShown)
+                {
+                    statusDlgShown = false;
+                    if (modelessForm != null) modelessForm.Close();
+                }
 
-		/// <summary>Stop this operation</summary>
-		public void Stop()
+                /// Printer is online  =>  Print results now
+                CultureInfo oriCulture = Thread.CurrentThread.CurrentCulture;
+                if (printerCfg.Culture != Culture.system)
+                {
+                    Thread.CurrentThread.CurrentCulture = new CultureInfo(printerCfg.Culture.ToString());
+                }
+
+                PrintResults(batch, string.Format("{0}", batch.BatchNr));
+
+                Thread.CurrentThread.CurrentCulture = oriCulture;
+
+                printingCompleted = true;
+                return Event.ResultsPrinted;
+            }
+            else
+            {
+                if (!statusDlgShown)
+                {
+                    statusDlgShown = true;
+                    modelessForm = new ModelessForm(message);
+                    new Thread(() => System.Windows.Forms.Application.Run(modelessForm)).Start();
+                }
+
+                return Event.Busy;
+            }
+        }
+
+        /// <summary>Stop this operation</summary>
+        public void Stop()
 		{
 		}
 
diff --git a/TBF/Rig/Output/Printers/Munich/Printer.cs b/TBF/Rig/Output/Printers/Munich/Printer.cs
index b1566c565..9de587d89 100644
--- a/TBF/Rig/Output/Printers/Munich/Printer.cs
+++ b/TBF/Rig/Output/Printers/Munich/Printer.cs
@@ -2,12 +2,12 @@
 /// Copyright (c) 2013-2023 Sensus Slovensko a.s.
 ///
 using System;
-using System.Collections.Generic;
-using System.Drawing;
-using System.Drawing.Printing;
 using log4net;
-using Config.Entities;
-using TBF.Rig;
+using Common;
+using Common.Forms;
+using Results.Output.Printers.Munich;
+using System.Globalization;
+using System.Threading;
 
 namespace TBF.Rig.Output.Printers.Munich
 {
@@ -24,6 +24,10 @@ namespace TBF.Rig.Output.Printers.Munich
 		/// <summary> Data to print </summary>
 		Results.Entities.Batch batch;
 
+        bool printingCompleted = false;
+        bool statusDlgShown = false;
+        ModelessForm modelessForm;
+
         public string Version { get { return printerCfg.Version; } }
 
 
@@ -37,14 +41,23 @@ namespace TBF.Rig.Output.Printers.Munich
 
         public override void Initialize()
         {
-            log.FatalFormat("{0} initialized: {1}", Name, this);
+            if (printerCfg.DebugLevel == DebugMode.Normal)
+            {
+                string message;
+                if (!PrinterStatus.IsOnline(printerCfg.PrinterName, out message)) throw new ApplicationException(message);
+                log.FatalFormat("{0} initialized: {1}", Name, this);
+            }
+            else
+            {
+                log.FatalFormat("{0} simulated: {1}", Name, this);
+            }
         }
 
 
-		/// <summary>Events:  ResultsPrinted</summary>
-		/// <param name="benchId">Procedure to print the results of</param>
-		/// <param name="results">Results to print</param>
-		/// <returns>Reference to the operation</returns>
+        /// <summary>Events:  ResultsPrinted</summary>
+        /// <param name="benchId">Procedure to print the results of</param>
+        /// <param name="results">Results to print</param>
+        /// <returns>Reference to the operation</returns>
         public IOperation ProcessResultsOp(Results.Entities.Batch batch)
 		{
 			this.batch = batch;
@@ -54,23 +67,53 @@ namespace TBF.Rig.Output.Printers.Munich
 		/// <summary>Start this operation</summary>
 		public void Start()
 		{
-			foreach (var wm in batch.WaterMeters)
-			{
-                var pd = new Results.Output.Printers.Munich.MunichPrintDocument(printerCfg.Version, wm, printerCfg.PageOrientation);
-                if (!string.IsNullOrEmpty(printerCfg.PrinterName)) pd.PrinterSettings.PrinterName = printerCfg.PrinterName;
-                pd.Print();
-            }
-		}
+            printingCompleted = false;
+            statusDlgShown = false;
+        }
 
-		/// <summary>Run this operation</summary>
-		/// <returns>Event.ResultsPrinted</returns>
-		public Event Run()
+        /// <summary>Run this operation</summary>
+        /// <returns>Event.ResultsPrinted</returns>
+        public Event Run()
 		{
-			return Event.ResultsPrinted;
-		}
+            string message;
+            if (printingCompleted || printerCfg.DebugLevel != DebugMode.Normal)
+            {
+                return Event.ResultsPrinted;
+            }
+            else if (PrinterStatus.IsOnline(printerCfg.PrinterName, out message))
+            {
+                if (statusDlgShown)
+                {
+                    statusDlgShown = false;
+                    if (modelessForm != null) modelessForm.Close();
+                }
 
-		/// <summary>Stop this operation</summary>
-		public void Stop()
+                /// Printer is online  =>  Print results now
+                foreach (var wm in batch.WaterMeters)
+                {
+                    var pd = new MunichPrintDocument(printerCfg.Version, wm, printerCfg.PageOrientation);
+                    if (!string.IsNullOrEmpty(printerCfg.PrinterName)) pd.PrinterSettings.PrinterName = printerCfg.PrinterName;
+                    pd.Print();
+                }
+
+                printingCompleted = true;
+                return Event.ResultsPrinted;
+            }
+            else
+            {
+                if (!statusDlgShown)
+                {
+                    statusDlgShown = true;
+                    modelessForm = new ModelessForm(message);
+                    new Thread(() => System.Windows.Forms.Application.Run(modelessForm)).Start();
+                }
+
+                return Event.Busy;
+            }
+        }
+
+        /// <summary>Stop this operation</summary>
+        public void Stop()
 		{
 		}
 	}
diff --git a/TBF/Rig/Output/Printers/OnePerBatch/Printer.cs b/TBF/Rig/Output/Printers/OnePerBatch/Printer.cs
index ea1df70dc..8ebb718be 100644
--- a/TBF/Rig/Output/Printers/OnePerBatch/Printer.cs
+++ b/TBF/Rig/Output/Printers/OnePerBatch/Printer.cs
@@ -5,9 +5,11 @@ using System;
 using System.Collections.Generic;
 using System.Globalization;
 using System.Threading;
+using log4net;
+using Common;
+using Common.Forms;
 using Results.Entities;
 using Results.Output.Printers.OnePerBatch;
-using log4net;
 
 namespace TBF.Rig.Output.Printers.OnePerBatch
 {
@@ -31,8 +33,12 @@ namespace TBF.Rig.Output.Printers.OnePerBatch
 		IList<Results.WMeterRsltItemSpec> testItems;
 		string footer;
 
+        bool printingCompleted = false;
+        bool statusDlgShown = false;
+        ModelessForm modelessForm;
 
-		public Printer() { }
+
+        public Printer() { }
 
 		public Printer(Generic.IComponentCfg cfg)
 			: base(cfg)
@@ -43,10 +49,19 @@ namespace TBF.Rig.Output.Printers.OnePerBatch
         public override void Initialize()
         {
             ApplyConfig();
-            log.FatalFormat("{0} initialized: {1}", Name, this);
+            if (printerCfg.DebugLevel == DebugMode.Normal)
+            {
+                string message;
+                if (!PrinterStatus.IsOnline(printerCfg.PrinterName, out message)) throw new ApplicationException(message);
+                log.FatalFormat("{0} initialized: {1}", Name, this);
+            }
+            else
+            {
+                log.FatalFormat("{0} simulated: {1}", Name, this);
+            }
         }
 
-		void ApplyConfig()
+        void ApplyConfig()
 		{
 			header = string.IsNullOrEmpty(printerCfg.Header) ? string.Empty : printerCfg.Header.Replace("~", Environment.NewLine);
 			commonItems = Results.WMeterRsltItemSpec.FromStrArray(printerCfg.CommonItems1);
@@ -150,49 +165,78 @@ namespace TBF.Rig.Output.Printers.OnePerBatch
 		/// <summary>Start this operation</summary>
 		public void Start()
 		{
-            CultureInfo oriCulture = Thread.CurrentThread.CurrentCulture;
-
-            if (printerCfg.Culture != Culture.system)
-            {
-                Thread.CurrentThread.CurrentCulture = new CultureInfo(printerCfg.Culture.ToString());
-            }
-
-            foreach (var wm in batch.WaterMeters)
-            {
-                if (wm != null && !wm.Disabled && (!printerCfg.GoodOnly || wm.Passed))
-                {
-                    string documentName;
-                    try
-                    {
-                        if (string.IsNullOrEmpty(printerCfg.DocName)) throw (new Exception());
-                        documentName = string.Format(printerCfg.DocName, wm.StartTime(), wm.EndTime(), wm.BatchNr(), wm.WMPosition, wm.SerialNr);
-                    }
-                    catch
-                    {
-                        documentName = string.Format("{0}", batch.BatchNr, wm.WMPosition);
-                    }
-
-                    /// The following condition prevents printing empty AutoTest results protocols
-                    if (string.IsNullOrEmpty(printerCfg.AutoTestParam) || wm.AutoMeterTestRslts(printerCfg.AutoTestParam).Count > 0)
-                    {
-                        PrintResults(batch, wm, documentName);
-                        break;
-                    }
-                }
-            }
-
-            Thread.CurrentThread.CurrentCulture = oriCulture;
+            printingCompleted = false;
+            statusDlgShown = false;
         }
 
-		/// <summary>Run this operation</summary>
-		/// <returns>Event.ResultsPrinted</returns>
-		public Event Run()
+        /// <summary>Run this operation</summary>
+        /// <returns>Event.ResultsPrinted</returns>
+        public Event Run()
 		{
-				return Event.ResultsPrinted;
-		}
+            string message;
+            if (printingCompleted || printerCfg.DebugLevel != DebugMode.Normal)
+            {
+                return Event.ResultsPrinted;
+            }
+            else if (PrinterStatus.IsOnline(printerCfg.PrinterName, out message))
+            {
+                if (statusDlgShown)
+                {
+                    statusDlgShown = false;
+                    if (modelessForm != null) modelessForm.Close();
+                }
 
-		/// <summary>Stop this operation</summary>
-		public void Stop()
+                /// Printer is online  =>  Print results now
+                CultureInfo oriCulture = Thread.CurrentThread.CurrentCulture;
+                if (printerCfg.Culture != Culture.system)
+                {
+                    Thread.CurrentThread.CurrentCulture = new CultureInfo(printerCfg.Culture.ToString());
+                }
+
+                foreach (var wm in batch.WaterMeters)
+                {
+                    if (wm != null && !wm.Disabled && (!printerCfg.GoodOnly || wm.Passed))
+                    {
+                        string documentName;
+                        try
+                        {
+                            if (string.IsNullOrEmpty(printerCfg.DocName)) throw (new Exception());
+                            documentName = string.Format(printerCfg.DocName, wm.StartTime(), wm.EndTime(), wm.BatchNr(), wm.WMPosition, wm.SerialNr);
+                        }
+                        catch
+                        {
+                            documentName = string.Format("{0}", batch.BatchNr, wm.WMPosition);
+                        }
+
+                        /// The following condition prevents printing empty AutoTest results protocols
+                        if (string.IsNullOrEmpty(printerCfg.AutoTestParam) || wm.AutoMeterTestRslts(printerCfg.AutoTestParam).Count > 0)
+                        {
+                            PrintResults(batch, wm, documentName);
+                            break;
+                        }
+                    }
+                }
+
+                Thread.CurrentThread.CurrentCulture = oriCulture;
+
+                printingCompleted = true;
+                return Event.ResultsPrinted;
+            }
+            else
+            {
+                if (!statusDlgShown)
+                {
+                    statusDlgShown = true;
+                    modelessForm = new ModelessForm(message);
+                    new Thread(() => System.Windows.Forms.Application.Run(modelessForm)).Start();
+                }
+
+                return Event.Busy;
+            }
+        }
+
+        /// <summary>Stop this operation</summary>
+        public void Stop()
 		{
 		}
 
diff --git a/TBF/Rig/Output/Printers/OnePerMeter/Printer.cs b/TBF/Rig/Output/Printers/OnePerMeter/Printer.cs
index 3ecb55608..ad9822d55 100644
--- a/TBF/Rig/Output/Printers/OnePerMeter/Printer.cs
+++ b/TBF/Rig/Output/Printers/OnePerMeter/Printer.cs
@@ -5,9 +5,11 @@ using System;
 using System.Collections.Generic;
 using System.Globalization;
 using System.Threading;
+using log4net;
+using Common;
+using Common.Forms;
 using Results.Entities;
 using Results.Output.Printers.OnePerMeter;
-using log4net;
 
 namespace TBF.Rig.Output.Printers.OnePerMeter
 {
@@ -31,8 +33,12 @@ namespace TBF.Rig.Output.Printers.OnePerMeter
 		IList<Results.WMeterRsltItemSpec> testItems;
 		string footer;
 
+        bool printingCompleted = false;
+        bool statusDlgShown = false;
+        ModelessForm modelessForm;
 
-		public Printer() { }
+
+        public Printer() { }
 
 		public Printer(Generic.IComponentCfg cfg)
 			: base(cfg)
@@ -43,10 +49,19 @@ namespace TBF.Rig.Output.Printers.OnePerMeter
         public override void Initialize()
         {
             ApplyConfig();
-            log.FatalFormat("{0} initialized: {1}", Name, this);
+            if (printerCfg.DebugLevel == DebugMode.Normal)
+            {
+                string message;
+                if (!PrinterStatus.IsOnline(printerCfg.PrinterName, out message)) throw new ApplicationException(message);
+                log.FatalFormat("{0} initialized: {1}", Name, this);
+            }
+            else
+            {
+                log.FatalFormat("{0} simulated: {1}", Name, this);
+            }
         }
 
-		void ApplyConfig()
+        void ApplyConfig()
 		{
 			header = string.IsNullOrEmpty(printerCfg.Header) ? string.Empty : printerCfg.Header.Replace("~", Environment.NewLine);
 			commonItems = Results.WMeterRsltItemSpec.FromStrArray(printerCfg.CommonItems1);
@@ -154,45 +169,74 @@ namespace TBF.Rig.Output.Printers.OnePerMeter
 		/// <summary>Start this operation</summary>
 		public void Start()
 		{
-            CultureInfo oriCulture = Thread.CurrentThread.CurrentCulture;
-
-            if (printerCfg.Culture != Culture.system)
-            {
-                Thread.CurrentThread.CurrentCulture = new CultureInfo(printerCfg.Culture.ToString());
-            }
-
-            foreach (var wm in batch.WaterMeters)
-            {
-                if (wm != null && !wm.Disabled && (!printerCfg.GoodOnly || wm.Passed))
-                {
-                    string documentName;
-                    try
-                    {
-                        if (string.IsNullOrEmpty(printerCfg.DocName)) throw (new Exception());
-                        documentName = string.Format(printerCfg.DocName, wm.StartTime(), wm.EndTime(), wm.BatchNr(), wm.WMPosition, wm.SerialNr, wm.SerialNrAux);
-                        ///                                                  {0}             {1}           {2}           {3}            {4}          {5}
-                    }
-                    catch
-                    {
-                        documentName = string.Format("{0}-{1}", batch.BatchNr, wm.WMPosition);
-                    }
-
-                    PrintResults(batch, wm, documentName);
-                }
-            }
-
-            Thread.CurrentThread.CurrentCulture = oriCulture;
+            printingCompleted = false;
+            statusDlgShown = false;
         }
 
-		/// <summary>Run this operation</summary>
-		/// <returns>Event.ResultsPrinted</returns>
-		public Event Run()
+        /// <summary>Run this operation</summary>
+        /// <returns>Event.ResultsPrinted</returns>
+        public Event Run()
 		{
-				return Event.ResultsPrinted;
-		}
+            string message;
+            if (printingCompleted || printerCfg.DebugLevel != DebugMode.Normal)
+            {
+                return Event.ResultsPrinted;
+            }
+            else if (PrinterStatus.IsOnline(printerCfg.PrinterName, out message))
+            {
+                if (statusDlgShown)
+                {
+                    statusDlgShown = false;
+                    if (modelessForm != null) modelessForm.Close();
+                }
 
-		/// <summary>Stop this operation</summary>
-		public void Stop()
+                /// Printer is online  =>  Print results now
+                CultureInfo oriCulture = Thread.CurrentThread.CurrentCulture;
+                if (printerCfg.Culture != Culture.system)
+                {
+                    Thread.CurrentThread.CurrentCulture = new CultureInfo(printerCfg.Culture.ToString());
+                }
+
+                foreach (var wm in batch.WaterMeters)
+                {
+                    if (wm != null && !wm.Disabled && (!printerCfg.GoodOnly || wm.Passed))
+                    {
+                        string documentName;
+                        try
+                        {
+                            if (string.IsNullOrEmpty(printerCfg.DocName)) throw (new Exception());
+                            documentName = string.Format(printerCfg.DocName, wm.StartTime(), wm.EndTime(), wm.BatchNr(), wm.WMPosition, wm.SerialNr, wm.SerialNrAux);
+                            ///                                                  {0}             {1}           {2}           {3}            {4}          {5}
+                        }
+                        catch
+                        {
+                            documentName = string.Format("{0}-{1}", batch.BatchNr, wm.WMPosition);
+                        }
+
+                        PrintResults(batch, wm, documentName);
+                    }
+                }
+
+                Thread.CurrentThread.CurrentCulture = oriCulture;
+
+                printingCompleted = true;
+                return Event.ResultsPrinted;
+            }
+            else
+            {
+                if (!statusDlgShown)
+                {
+                    statusDlgShown = true;
+                    modelessForm = new ModelessForm(message);
+                    new Thread(() => System.Windows.Forms.Application.Run(modelessForm)).Start();
+                }
+
+                return Event.Busy;
+            }
+        }
+
+        /// <summary>Stop this operation</summary>
+        public void Stop()
 		{
 		}
 
diff --git a/TBF/Rig/Output/Printers/PrinterStatus.cs b/TBF/Rig/Output/Printers/PrinterStatus.cs
new file mode 100644
index 000000000..27ec68a1b
--- /dev/null
+++ b/TBF/Rig/Output/Printers/PrinterStatus.cs
@@ -0,0 +1,136 @@
+///
+/// Copyright (c) 2023 Sensus Slovensko a.s.
+///
+using System;
+using System.Management;
+
+namespace TBF.Rig.Output.Printers
+{
+    public static class PrinterStatus
+    {
+        ///
+        /// See also https://learn.microsoft.com/en-us/windows/win32/cimwin32prov/win32-printer
+        ///
+
+        public enum DetectedErrorState : UInt16
+        {
+            Unknown = 0,
+            Other = 1,
+            No_Error = 2,
+            Low_Paper = 3,
+            No_Paper = 4,
+            Low_Toner = 5,
+            No_Toner = 6,
+            Door_Open = 7,
+            Jammed = 8,
+            Offline = 9,
+            Service_Requested = 10,
+            Output_Bin_Full = 11,
+        }
+
+        public enum ExtendedPrinterStatus : UInt16
+        {
+            Other = 1,
+            Unknown = 2,
+            Idle = 3,
+            Printing = 4,
+            Warming_Up = 5,
+            Stopped_Printing = 6,
+            Offline = 7,
+            Paused = 8,
+            Error = 9,
+            Busy = 10,
+            Not_Aavailable = 11,
+            Waiting = 12,
+            Processing = 13,
+            Initialization = 14,
+            Power_Save = 15,
+            Pending_Deletion = 16,
+            IO_Active = 17,
+            Manual_Feed = 18,
+        }
+
+        public static void GetStatus(string printerName)
+        {
+            /// Perform the search for printers and return the listing as a collection
+            var mgmtSearcher = new ManagementObjectSearcher("SELECT * FROM Win32_Printer");
+            var mgmtCollection = mgmtSearcher.Get();
+
+            foreach (ManagementObject wmiObj in mgmtCollection)
+            {
+                if (wmiObj["Name"].ToString().ToLower() == printerName.ToLower())
+                {
+                    /// Management object name fits the printer name
+
+                    var state = (ExtendedPrinterStatus)int.Parse(wmiObj["ExtendedPrinterStatus"].ToString());
+                    if (state == ExtendedPrinterStatus.Other ||
+                        state == ExtendedPrinterStatus.Unknown ||
+                        state == ExtendedPrinterStatus.Offline ||
+                        state == ExtendedPrinterStatus.Error ||
+                        state == ExtendedPrinterStatus.Not_Aavailable)
+                    {
+                        var message = string.Format("Printer '{0}' state is '{1}'", printerName, state.ToString().Replace('_', ' '));
+                        throw new ApplicationException(message);
+                    }
+
+                    var error = (DetectedErrorState)int.Parse(wmiObj["DetectedErrorState"].ToString());
+                    if (error != DetectedErrorState.No_Error)
+                    {
+                        var message = string.Format("Printer '{0}' error state is '{1}'", printerName, error.ToString().Replace('_', ' '));
+                        throw new ApplicationException(message);
+                    }
+                }
+            }
+        }
+
+        /// <summary>
+        /// Returns true when printer is online, without errors.
+        /// </summary>
+        /// <param name="printerName">Printer name</param>
+        /// <param name="message">Error message when printer is not online</param>
+        /// <returns>true when online, false when there are any errors or printer is not online</returns>
+        public static bool IsOnline(string printerName, out string message)
+        {
+            // TODO: Uncomment the following line and resolve problems : Unknown status/error always returned
+            // if (string.IsNullOrEmpty(printerName))
+            {
+                /// Default printer
+                message = string.Empty;
+                return true;
+            }
+
+            /// Perform the search for printers and return the listing as a collection
+            var mgmtSearcher = new ManagementObjectSearcher("SELECT * FROM Win32_Printer");
+            var mgmtCollection = mgmtSearcher.Get();
+
+            foreach (ManagementObject wmiObj in mgmtCollection)
+            {
+                if (wmiObj["Name"].ToString().ToLower() == printerName.ToLower())
+                {
+                    /// Management object name fits the printer name
+
+                    var state = (ExtendedPrinterStatus)int.Parse(wmiObj["ExtendedPrinterStatus"].ToString());
+                    if (state == ExtendedPrinterStatus.Other ||
+                        state == ExtendedPrinterStatus.Unknown ||
+                        state == ExtendedPrinterStatus.Offline ||
+                        state == ExtendedPrinterStatus.Error ||
+                        state == ExtendedPrinterStatus.Not_Aavailable)
+                    {
+                        message = string.Format("Printer '{0}' state is '{1}'", printerName, state.ToString().Replace('_', ' '));
+                        return false;
+                    }
+
+                    var error = (DetectedErrorState)int.Parse(wmiObj["DetectedErrorState"].ToString());
+                    if (error != DetectedErrorState.No_Error)
+                    {
+                        message = string.Format("Printer '{0}' error state is '{1}'", printerName, error.ToString().Replace('_', ' '));
+                        return false;
+                    }
+                }
+            }
+
+            message = string.Empty;
+            return true;
+        }
+    }
+}
diff --git a/TBF/Rig/Output/Printers/Zapiska/Printer.cs b/TBF/Rig/Output/Printers/Zapiska/Printer.cs
index 749c70290..8289c9ae2 100644
--- a/TBF/Rig/Output/Printers/Zapiska/Printer.cs
+++ b/TBF/Rig/Output/Printers/Zapiska/Printer.cs
@@ -5,8 +5,10 @@ using System;
 using System.Collections.Generic;
 using System.Globalization;
 using System.Threading;
-using Results.Output.Printers.Zapiska;
 using log4net;
+using Common;
+using Common.Forms;
+using Results.Output.Printers.Zapiska;
 
 namespace TBF.Rig.Output.Printers.Zapiska
 {
@@ -30,8 +32,12 @@ namespace TBF.Rig.Output.Printers.Zapiska
 		IList<Results.WMeterRsltItemSpec> testItems;
 		string footer;
 
+        bool printingCompleted = false;
+        bool statusDlgShown = false;
+        ModelessForm modelessForm;
 
-		public Printer() { }
+
+        public Printer() { }
 
 		public Printer(Generic.IComponentCfg cfg)
 			: base(cfg)
@@ -42,10 +48,19 @@ namespace TBF.Rig.Output.Printers.Zapiska
         public override void Initialize()
         {
             ApplyConfig();
-            log.FatalFormat("{0} initialized: {1}", Name, this);
+            if (printerCfg.DebugLevel == DebugMode.Normal)
+            {
+                string message;
+                if (!PrinterStatus.IsOnline(printerCfg.PrinterName, out message)) throw new ApplicationException(message);
+                log.FatalFormat("{0} initialized: {1}", Name, this);
+            }
+            else
+            {
+                log.FatalFormat("{0} simulated: {1}", Name, this);
+            }
         }
 
-		void ApplyConfig()
+        void ApplyConfig()
 		{
 			header = string.IsNullOrEmpty(printerCfg.Header) ? string.Empty : printerCfg.Header.Replace("~", Environment.NewLine);
 			commonItems = Results.WMeterRsltItemSpec.FromStrArray(printerCfg.CommonItems1);
@@ -137,38 +152,67 @@ namespace TBF.Rig.Output.Printers.Zapiska
 		/// <summary>Start this operation</summary>
 		public void Start()
 		{
-            CultureInfo oriCulture = Thread.CurrentThread.CurrentCulture;
-
-            if (printerCfg.Culture != Culture.system)
-            {
-                Thread.CurrentThread.CurrentCulture = new CultureInfo(printerCfg.Culture.ToString());
-            }
-
-            string documentName;
-            try
-            {
-                if (string.IsNullOrEmpty(printerCfg.DocName)) throw (new Exception());
-                documentName = string.Format(printerCfg.DocName, batch.StartTime, batch.EndTime, batch.BatchNr);
-            }
-            catch
-            {
-                documentName = string.Format("{0:yyyyMMdd-HHmm}", batch.EndTime);
-            }
-
-            PrintResults(batch, documentName);
-
-            Thread.CurrentThread.CurrentCulture = oriCulture;
+            printingCompleted = false;
+            statusDlgShown = false;
         }
 
-		/// <summary>Run this operation</summary>
-		/// <returns>Event.ResultsPrinted</returns>
-		public Event Run()
+        /// <summary>Run this operation</summary>
+        /// <returns>Event.ResultsPrinted</returns>
+        public Event Run()
 		{
-			return Event.ResultsPrinted;
-		}
+            string message;
+            if (printingCompleted || printerCfg.DebugLevel != DebugMode.Normal)
+            {
+                return Event.ResultsPrinted;
+            }
+            else if (PrinterStatus.IsOnline(printerCfg.PrinterName, out message))
+            {
+                if (statusDlgShown)
+                {
+                    statusDlgShown = false;
+                    if (modelessForm != null) modelessForm.Close();
+                }
 
-		/// <summary>Stop this operation</summary>
-		public void Stop()
+                /// Printer is online  =>  Print results now
+                CultureInfo oriCulture = Thread.CurrentThread.CurrentCulture;
+                if (printerCfg.Culture != Culture.system)
+                {
+                    Thread.CurrentThread.CurrentCulture = new CultureInfo(printerCfg.Culture.ToString());
+                }
+
+                string documentName;
+                try
+                {
+                    if (string.IsNullOrEmpty(printerCfg.DocName)) throw (new Exception());
+                    documentName = string.Format(printerCfg.DocName, batch.StartTime, batch.EndTime, batch.BatchNr);
+                }
+                catch
+                {
+                    documentName = string.Format("{0:yyyyMMdd-HHmm}", batch.EndTime);
+                }
+
+                PrintResults(batch, documentName);
+
+                Thread.CurrentThread.CurrentCulture = oriCulture;
+
+                printingCompleted = true;
+                return Event.ResultsPrinted;
+            }
+            else
+            {
+                if (!statusDlgShown)
+                {
+                    statusDlgShown = true;
+                    modelessForm = new ModelessForm(message);
+                    new Thread(() => System.Windows.Forms.Application.Run(modelessForm)).Start();
+                }
+
+                return Event.Busy;
+            }
+        }
+
+        /// <summary>Stop this operation</summary>
+        public void Stop()
 		{
 		}
 
@@ -215,7 +259,7 @@ namespace TBF.Rig.Output.Printers.Zapiska
                     Footer = printerCfg.Footer,
 				};
 
-                var pd = new Results.Output.Printers.Zapiska.ZapiskaPrintDocument(batch, cfg, documentName);
+                var pd = new ZapiskaPrintDocument(batch, cfg, documentName);
                 if (!string.IsNullOrEmpty(printerCfg.PrinterName)) pd.PrinterSettings.PrinterName = printerCfg.PrinterName;
                 pd.Print();
             }
diff --git a/TBF/TBF.csproj b/TBF/TBF.csproj
index f66437d1f..7552c4873 100644
--- a/TBF/TBF.csproj
+++ b/TBF/TBF.csproj
@@ -145,6 +145,7 @@
     <Reference Include="System.Data" />
     <Reference Include="System.Deployment" />
     <Reference Include="System.Drawing" />
+    <Reference Include="System.Management" />
     <Reference Include="System.Net.Http" />
     <Reference Include="System.Numerics" />
     <Reference Include="System.Security" />
@@ -1189,6 +1190,7 @@
     <Compile Include="Rig\Output\Printers\OnePerMeter\PrinterCfgCtrl.designer.cs">
       <DependentUpon>PrinterCfgCtrl.cs</DependentUpon>
     </Compile>
+    <Compile Include="Rig\Output\Printers\PrinterStatus.cs" />
     <Compile Include="Rig\Output\Printers\Zapiska\FactoryCompound.cs" />
     <Compile Include="Rig\Output\Printers\Zapiska\FactoryHeatMeters.cs" />
     <Compile Include="Rig\Output\Printers\Zapiska\FactorySingle.cs" />