diff --git a/dll/commdll.dll b/dll/commdll.dll
index ae44bfe..2511c30 100644
Binary files a/dll/commdll.dll and b/dll/commdll.dll differ
diff --git a/dll/commdllD.dll b/dll/commdllD.dll
index 3e071da..5dd89e7 100644
Binary files a/dll/commdllD.dll and b/dll/commdllD.dll differ
diff --git a/dll/iodll.dll b/dll/iodll.dll
index 1d6e5c8..261ef5f 100644
Binary files a/dll/iodll.dll and b/dll/iodll.dll differ
diff --git a/dll/iodllD.dll b/dll/iodllD.dll
index 58d98d0..acaaee5 100644
Binary files a/dll/iodllD.dll and b/dll/iodllD.dll differ
diff --git a/dll/mcctrdll.dll b/dll/mcctrdll.dll
index ddc4d84..118ef88 100644
Binary files a/dll/mcctrdll.dll and b/dll/mcctrdll.dll differ
diff --git a/dll/mcctrdllD.dll b/dll/mcctrdllD.dll
index a02a9e8..6cbf11d 100644
Binary files a/dll/mcctrdllD.dll and b/dll/mcctrdllD.dll differ
diff --git a/dll/secsgemdll.dll b/dll/secsgemdll.dll
index 6d168c8..951fc82 100644
Binary files a/dll/secsgemdll.dll and b/dll/secsgemdll.dll differ
diff --git a/dll/secsgemdllD.dll b/dll/secsgemdllD.dll
index 16866f4..cc3fe59 100644
Binary files a/dll/secsgemdllD.dll and b/dll/secsgemdllD.dll differ
diff --git a/dll/utility.dll b/dll/utility.dll
index 8312687..6110305 100644
Binary files a/dll/utility.dll and b/dll/utility.dll differ
diff --git a/dll/utilityD.dll b/dll/utilityD.dll
index acc4cf4..28ed542 100644
Binary files a/dll/utilityD.dll and b/dll/utilityD.dll differ
diff --git a/secsgemdll/Include/SGManager.h b/secsgemdll/Include/SGManager.h
index 160e451..a20a8cb 100644
--- a/secsgemdll/Include/SGManager.h
+++ b/secsgemdll/Include/SGManager.h
@@ -1,7 +1,7 @@
 #pragma once
 
 // STL
-#include <map>
+#include <unordered_map>
 #include <string>
 #include <memory>
 #include <variant>
@@ -11,7 +11,6 @@
 // project
 #include "ISGManager.h"
 #include "BufferedSocket.h"
-#include "SGLogger.h"
 
 #define MAXSOCKBUF 4096
 
@@ -186,6 +185,8 @@ protected:
     virtual void NotifyHandler(WPARAM wParam, LPARAM lParam);
 
 private:
+    void InitCommandMap();
+
     /************************** private methods *************************/
     bool static SkipToNextData(char** ppStr);
     std::string GetNextData(char** ppStr);
@@ -205,7 +206,7 @@ private:
         "SCHEDULE"
     };
 
-    const std::map<std::string, int> m_vecMainModes{
+    const std::unordered_map<std::string, int> m_vecMainModes{
         { "NOMATERIAL", NOMATERIAL_MODE },
         { "PRODUCTION", PRODUCTION_MODE },
         { "ENGINEERING", ENGINEERING_MODE },
@@ -220,6 +221,9 @@ private:
         "SUPER USER"
     };
 
+    using CommandHandler = std::function<void(char*&)>;
+    std::unordered_map<std::string, CommandHandler> m_commandMap;
+
     /************************** private fields **************************/
     int                 m_nSGPort{ 2000 };
     std::string         m_strSGIpAddress;
@@ -245,7 +249,6 @@ private:
     std::string m_sGeneralCmdReceived;
 
     std::string m_sSecsGemDataFile;
-    CSGLogger   m_logger;
 
     std::unique_ptr<CBufferedSocket> m_pSocketSecsGem;
 };
diff --git a/utility/Include/DebugLog.h b/utility/Include/DebugLog.h
index cb98b18..88041c1 100644
--- a/utility/Include/DebugLog.h
+++ b/utility/Include/DebugLog.h
@@ -80,6 +80,24 @@ void GUIEventLog(fmt::format_string<Args...> _fmt, Args&&... args)
     CLoggerManagerSingleton::Instance().LoggerManager().GetLogger(eLOGGER::GUI_EVENT_LOG).Log(_fmt, args...);
 }
 
+template <typename... Args>
+void SGDebugLog(fmt::format_string<Args...> _fmt, Args&&... args)
+{
+    CLoggerManagerSingleton::Instance().LoggerManager().GetLogger(eLOGGER::SG_DEBUG_LOG).Log(_fmt, args...);
+}
+
+template <typename... Args>
+void SGDebugLogError(fmt::format_string<Args...> _fmt, Args&&... args)
+{
+    CLoggerManagerSingleton::Instance().LoggerManager().GetLogger(eLOGGER::SG_DEBUG_LOG).Error(_fmt, args...);
+}
+
+template <typename... Args>
+void SGDebugLogInfo(fmt::format_string<Args...> _fmt, Args&&... args)
+{
+    CLoggerManagerSingleton::Instance().LoggerManager().GetLogger(eLOGGER::SG_DEBUG_LOG).Info(_fmt, args...);
+}
+
 std::shared_ptr<spdlog::logger> UTILITYDLL GetLogger(const std::string& strName);
 
 // on demand flush to file
@@ -89,6 +107,7 @@ void UTILITYDLL FlushDebugLogTiming();
 
 void UTILITYDLL FlushGuiEventLog();
 
+void UTILITYDLL FlushSGDebugLog();
 //
 void UTILITYDLL ShutdownLogging();
 
@@ -103,4 +122,7 @@ bool UTILITYDLL IsDebugLogTimingStarted();
 
 // All GUI Activities Events Log
 void UTILITYDLL StartGUIEventLog();
-void UTILITYDLL StopGUIEventLog();
\ No newline at end of file
+void UTILITYDLL StopGUIEventLog();
+
+void UTILITYDLL StartSGDebugLog();
+void UTILITYDLL StopSGDebugLog();
\ No newline at end of file
diff --git a/utility/Include/LogManager.h b/utility/Include/LogManager.h
index 95d96f2..b6ea3b2 100644
--- a/utility/Include/LogManager.h
+++ b/utility/Include/LogManager.h
@@ -15,6 +15,7 @@ namespace mitech::utils::logging
         DEBUG_LOG,
         DEBUG_TIMING_LOG,
         GUI_EVENT_LOG,
+        SG_DEBUG_LOG,
         MAX_LOGGER
     };
 
@@ -33,7 +34,8 @@ namespace mitech::utils::logging
         const std::map<eLOGGER, std::string> m_mapLoggerSettingFile{
             { eLOGGER::DEBUG_LOG, R"(d:\machine\config\debugLogSetting.json)" },
             { eLOGGER::DEBUG_TIMING_LOG, R"(d:\machine\config\debugLogTimingSetting.json)" },
-            { eLOGGER::GUI_EVENT_LOG, R"(d:\machine\config\guiEventLogSetting.json)" }
+            { eLOGGER::GUI_EVENT_LOG, R"(d:\machine\config\guiEventLogSetting.json)" },
+            { eLOGGER::SG_DEBUG_LOG, R"(d:\machine\config\SGDebugLogSetting.json)" }
         };
 
         const std::string m_LoggerGlobalSettingFile{ R"(d:\machine\config\GlobalLogSetting.json)" };
diff --git a/utility/Include/MitechSGDebugLog.h b/utility/Include/MitechSGDebugLog.h
new file mode 100644
index 0000000..83c6297
--- /dev/null
+++ b/utility/Include/MitechSGDebugLog.h
@@ -0,0 +1,33 @@
+#pragma once
+
+#include <memory>
+#include <string>
+
+#include "spdlog/spdlog.h"
+
+#include "Logger.h"
+#include "LogSettings.h"
+
+namespace mitech::utils::logging
+{
+    class CMitechSGDebugLog : public CLogger
+    {
+    public:
+        explicit CMitechSGDebugLog(const std::string& strName, const stLogOption& mySetting);
+        ~CMitechSGDebugLog() final;
+
+    private:
+        void InitLogger(const stLogOption& mySetting);
+
+        // Inherited via CLogger
+        void DoStart() override;
+        void DoFlush() override;
+        void DoLogging(const std::string& strMsg) override;
+        void DoTrace(const std::string& strMsg) override;
+        void DoInfo(const std::string& strMsg) override;
+        void DoError(const std::string& strMsg) override;
+
+        std::shared_ptr<spdlog::logger> m_logger;
+        std::string                     m_strPathFilename{ R"(d:\machine\log\SGDebugLog.log)" };
+    };
+}
\ No newline at end of file
diff --git a/utility/lib/utility.lib b/utility/lib/utility.lib
index 3c852b9..8dc6378 100644
Binary files a/utility/lib/utility.lib and b/utility/lib/utility.lib differ
diff --git a/utility/lib/utilityD.lib b/utility/lib/utilityD.lib
index edbd813..0fc8aad 100644
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