Index: firmware/App/Controllers/DGInterface.c
===================================================================
diff -u -r174c9ba02da6790f01ea9141ab1cc1d28388f2f8 -r2c85a6499b030fa3021cd5d8567af9dbc01bf552
--- firmware/App/Controllers/DGInterface.c	(.../DGInterface.c)	(revision 174c9ba02da6790f01ea9141ab1cc1d28388f2f8)
+++ firmware/App/Controllers/DGInterface.c	(.../DGInterface.c)	(revision 2c85a6499b030fa3021cd5d8567af9dbc01bf552)
@@ -56,10 +56,10 @@
 
 // DG status
 static DG_OP_MODE_T dgCurrentOpMode = DG_MODE_INIT;             ///< Current DG operation mode.
-static U32 dgSubMode = 0;                                       ///< Current state (sub-mode) of current DG operation mode.
+static U32 dgSubMode = 0;                                       ///< Current state (sub-mode) of current DG operation mode.
+static BOOL dgStartCommandSent = FALSE;                         ///< Flag indicates command to start DG has been sent.
 static BOOL dgStarted = FALSE;                                  ///< Flag indicates whether we have commanded the DG to start or stop.
 static BOOL dgTrimmerHeaterOn = FALSE;                          ///< Flag indicates whether we have commanded the DG to start or stop the trimmer heater.
-static BOOL dgWaterSampled = FALSE;                             ///< Flag indicates whether we have commanded the DG to sample water.
 
 // State machine states
 /// Current state of treatment mode reservoir management.
@@ -105,8 +105,9 @@
 static DG_CMD_RESPONSE_T dgCmdResp[ NUM_OF_DG_COMMANDS ];       ///< Keep the latest DG command response for each command.
 
 // ********** private function prototypes **********
+
+static void checkDGRestart( void );
 
-
 /*********************************************************************//**
  * @brief
  * The initDGInterface function initializes the DGInterface module.
@@ -120,7 +121,6 @@
 
     dgStarted = FALSE;
     dgTrimmerHeaterOn = FALSE;
-    dgWaterSampled = FALSE;
     dgPrimaryTempSet = 0.0;
     dgTrimmerTempSet = 0.0;
     dgActiveReservoirSet = DG_RESERVOIR_2;
@@ -169,6 +169,9 @@
 void execDGInterfaceMonitor( void )
 {
     // TODO - make sure DG sensor/state data is coming in timely manner (e.g. load cells s/b every 100 ms)
+
+    // Check to see if DG has restarted
+    checkDGRestart();
 }
 
 
@@ -693,7 +696,7 @@
  *************************************************************************/
 void cmdStartDG( void )
 {
-    dgStarted = TRUE;
+    dgStartCommandSent = TRUE;
     sendDGStartStopCommand( START_DG_CMD );
 }
 
@@ -798,8 +801,22 @@
 {
     dgCmdResp[ DG_CMD_START_FILL ].commandID = DG_CMD_NONE;
     dgReservoirFillVolumeTargetSet = fillToVolMl;
-    sendDGFillCommand( fillToVolMl );
+    sendDGFillCommand( DG_CMD_START, fillToVolMl );
 }
+
+/*********************************************************************//**
+ * @brief
+ * The cmdStopDGFill function sends a fill command with stop parameter message to the DG.
+ * @details Inputs: none
+ * @details Outputs: fill command with stop parameter sent to DG.
+ * @return none
+ *************************************************************************/
+void cmdStopDGFill( void )
+{
+    dgCmdResp[ DG_CMD_STOP_FILL ].commandID = DG_CMD_NONE;
+    dgReservoirFillVolumeTargetSet = 0;
+    sendDGFillCommand( DG_CMD_STOP, 0 );
+}
 
 /*********************************************************************//**
  * @brief
@@ -828,10 +845,9 @@
  * @details Outputs: sample water command sent to DG.
  * @return none
  *************************************************************************/
-void cmdDGSampleWater( void )
+void cmdDGSampleWater( SAMPLE_WATER_CMD_T cmd )
 {
-    dgWaterSampled = TRUE;
-    sendDGSampleWaterCommand();
+    sendDGSampleWaterCommand( cmd );
 }
 
 /*********************************************************************//**
@@ -897,7 +913,33 @@
     return hasCommandResp;
 }
 
+/*********************************************************************//**
+ * @brief
+ * The checkDGRestart function checks to see if DG has restarted after started
+ * by HD and triggers appropriate alarm.
+ * @details Inputs: dgStarted
+ * @details Outputs: triggers a fault alarm if DG restarted
+ * @return none
+ *************************************************************************/
+static void checkDGRestart( void )
+{
+    if ( ( dgStartCommandSent == TRUE ) && ( DG_MODE_CIRC == dgCurrentOpMode ) )
+    {
+        dgStartCommandSent = FALSE;
+        dgStarted = TRUE;
+    }
 
+    if ( TRUE == dgStarted )
+    {
+        if ( ( DG_MODE_FAUL != dgCurrentOpMode ) && ( DG_MODE_CIRC != dgCurrentOpMode ) &&
+             ( DG_MODE_FILL != dgCurrentOpMode ) && ( DG_MODE_DRAI != dgCurrentOpMode ) )
+        {
+            activateAlarmNoData( ALARM_ID_DG_RESTARTED_FAULT );
+        }
+    }
+}
+
+
 /*************************************************************************
  *                       TEST SUPPORT FUNCTIONS
  *************************************************************************/