Index: sources/canbus/MessageGlobals.h
===================================================================
diff -u -rdd6c876521e397ff990f81e7363b4f007fe3e2d9 -ra89b5249df072be403141463d7d88728b66a848e
--- sources/canbus/MessageGlobals.h	(.../MessageGlobals.h)	(revision dd6c876521e397ff990f81e7363b4f007fe3e2d9)
+++ sources/canbus/MessageGlobals.h	(.../MessageGlobals.h)	(revision a89b5249df072be403141463d7d88728b66a848e)
@@ -92,6 +92,8 @@
     {Gui::GuiActionType::ID_AlarmUserActionReq                      ,   1 * 4       }, // 1 parameter  each 4bytes
     {Gui::GuiActionType::ID_AlarmActiveListReq                      ,   0 * 4       }, // 1 parameter  each 4bytes
     {Gui::GuiActionType::ID_AlarmActiveListRsp                      ,  12 * 4       }, // 1 parameter  each 4bytes
+    {Gui::GuiActionType::ID_AlarmVolumeSetReq                       ,   1 * 4       }, // 1 parameter  each 4bytes
+    {Gui::GuiActionType::ID_AlarmVolumeSetRsp                       ,   2 * 4       }, // 2 parameters  each 4bytes
 
     // ----
     {Gui::GuiActionType::ID_TreatmentRanges                         ,   6 * 4       }, // 6 parameters each 4bytes
@@ -286,6 +288,16 @@
 };
 
 /*!
+ * \brief   The Can_Source enum
+ * \details The allowable sources of the CANBus messages.
+ */
+enum Can_Source {
+    eCan_Unknown    = -1,
+    eCan_HD         =  0,
+    eCan_DG         =  1,
+};
+
+/*!
  * \brief   The Message struct
  * \details The message structure after it's been converted form hex bytes to meaningful struct for UI.
  */