Index: firmware/App/Controllers/DGInterface.c
===================================================================
diff -u -rffaf9f13166d7a9beb4252fad804c488f870aaaa -r4d0c621f5994e1de8bf7d3337678f7835292ce73
--- firmware/App/Controllers/DGInterface.c	(.../DGInterface.c)	(revision ffaf9f13166d7a9beb4252fad804c488f870aaaa)
+++ firmware/App/Controllers/DGInterface.c	(.../DGInterface.c)	(revision 4d0c621f5994e1de8bf7d3337678f7835292ce73)
@@ -8,7 +8,7 @@
 * @file    DGInterface.c
 *
 * @author  (last)      Sean Nash
-* @date    (last)      07-Jul-2023
+* @date    (last)      14-Aug-2023
 *
 * @author  (original)  Sean
 * @date    (original)  08-Apr-2020
@@ -17,7 +17,7 @@
 
 #include <math.h> // To check for NaN
 
-#include "Battery.h"
+#include "CPLD.h"
 #include "DialInFlow.h"
 #include "Dialysis.h"
 #include "DGDefs.h"
@@ -96,14 +96,9 @@
 static BOOL dgOpModeDataFreshFlag = FALSE;                                  ///< Flag to signal the handleDGOpMode() to process fresh dg op mode data
 
 // Reservoir data
-static DG_RESERVOIR_ID_T dgActiveReservoir = DG_RESERVOIR_2;                ///< Latest active reservoir reported by the DG.
-static DG_RESERVOIR_ID_T dgActiveReservoirSet = DG_RESERVOIR_2;             ///< Active reservoir commanded.
+static DG_RESERVOIR_ID_T dgActiveReservoir;                                 ///< Latest active reservoir reported by the DG.
+static DG_RESERVOIR_ID_T dgActiveReservoirSet;                              ///< Active reservoir commanded.
 
-static U32 dgReservoirFillVolumeTarget = 0;                                 ///< Latest fill-to volume reported by the DG.
-static U32 dgReservoirFillVolumeTargetSet = 0;                              ///< Fill-to volume commanded.
-static U32 dgReservoirDrainVolumeTarget = 0;                                ///< Latest drain-to volume reported by the DG.
-static U32 dgReservoirDrainVolumeTargetSet = 0;                             ///< Drain-to volume commanded.
-
 static DG_DISINFECT_UI_STATES_T disinfectsStatus;                           ///< DG disinfects status.
 static DG_MIXING_RATIOS_T dgMixingRatios;                                   ///< DG mixing ratios.
 static HEATERS_DATA_T dgHeatersData;                                        ///< DG heaters data.
@@ -129,14 +124,13 @@
 {
     U32 i, j;
 
+    // NOTE: the active reservoir is set to reservoir 1 since DG will send active reservoir 1 as active on power up
     dgStarted                       = FALSE;
     dgTrimmerHeaterOn               = FALSE;
     dgTrimmerTempSet                = 0.0F;
     dgTrimmerTempCheckTimerCtr      = 0;
     dgActiveReservoirSet            = DG_RESERVOIR_2;
     dgActiveReservoir               = DG_RESERVOIR_2;
-    dgReservoirFillVolumeTargetSet  = 0;
-    dgReservoirDrainVolumeTargetSet = 0;
     dgDialysateTemp                 = 0.0F;
     dgCurrentOpMode                 = DG_MODE_INIT;
     dgSubMode                       = 0;
@@ -233,7 +227,7 @@
  *************************************************************************/
 void execDGInterfaceMonitor( void )
 {
-    if ( isACPowerLost() != TRUE )
+    if ( getCPLDACPowerLossDetected() != TRUE )
     {
         // Trigger alarm if not receiving new load cell data message in timely manner
         checkDGDataFreshness( ALARM_ID_HD_NEW_LOAD_CELL_DATA_MESSAGE_NOT_RECEIVE, &dgLoadCellDataFreshFlag );
@@ -468,7 +462,7 @@
  * The getDialysateTemperature function gets the latest dialysate temperature.
  * @details Inputs: dgDialysateTemp
  * @details Outputs: none
- * @return the current dialysate temperature
+ * @return the latest dialysate temperature
  *************************************************************************/
 F32 getDialysateTemperature( void )
 {
@@ -477,6 +471,19 @@
 
 /*********************************************************************//**
  * @brief
+ * The getRedundantDialysateTemperature function gets the latest redundant
+ * dialysate temperature.
+ * @details Inputs: dgRedundantDialysateTemp
+ * @details Outputs: none
+ * @return the latest redundant dialysate temperature
+ *************************************************************************/
+F32 getRedundantDialysateTemperature( void )
+{
+    return dgRedundantDialysateTemp;
+}
+
+/*********************************************************************//**
+ * @brief
  * The getHeatDisinfectTemperatureSensorValue function gets the latest
  * heat disinfect temperature sensor value.
  * @details Inputs: dgDialysateTemp
@@ -504,7 +511,7 @@
 /*********************************************************************//**
  * @brief
  * The getDGDisinfectsStates function returns the DG disinfects readings.
- * @details Inputs: none
+ * @details Inputs: disinfectsStatus
  * @details Outputs: none
  * @return the current DG disinfects readings
  *************************************************************************/
@@ -517,7 +524,7 @@
  * @brief
  * The getDGMixingRatios function returns the DG mixing ratios and the fill
  * prep time.
- * @details Inputs: none
+ * @details Inputs: dgMixingRatios
  * @details Outputs: none
  * @return getDGMixingRatios which is the DG mixing ratios
  *************************************************************************/
@@ -597,8 +604,7 @@
  * The setDGReservoirsData function sets the latest reservoir data
  * reported by the DG.
  * @details Inputs: none
- * @details Outputs: dgActiveReservoir, dgReservoirFillVolumeTarget,
- * dgReservoirDrainVolumeTarget, dgReservoirsDataFreshFlag
+ * @details Outputs: dgActiveReservoir, dgReservoirsDataFreshFlag
  * @param resID ID of active reservoir
  * @param fillVol Reservoir fill to volume reported by DG
  * @param drainVol Reservoir drain to volume reported by DG
@@ -609,8 +615,6 @@
     if ( resID < NUM_OF_DG_RESERVOIRS )
     {
         dgActiveReservoir = resID;
-        dgReservoirFillVolumeTarget = fillVol;
-        dgReservoirDrainVolumeTarget = drainVol;
     }
     else
     {
@@ -908,7 +912,6 @@
 void cmdStartDGFill( U32 fillToVolMl, F32 targetFlowLPM )
 {
     dgCmdResp[ DG_CMD_START_FILL ].commandID = DG_CMD_NONE;
-    dgReservoirFillVolumeTargetSet = fillToVolMl;
 
     sendDGFillCommand( DG_CMD_START, fillToVolMl, targetFlowLPM );
 }
@@ -923,7 +926,6 @@
 void cmdStopDGFill( void )
 {
     dgCmdResp[ DG_CMD_STOP_FILL ].commandID = DG_CMD_NONE;
-    dgReservoirFillVolumeTargetSet = 0;
 
     sendDGFillCommand( DG_CMD_STOP, 0, 0 );
 }
@@ -947,7 +949,6 @@
     payload.tareLoadCells                     = tareLoadCell;
     payload.rinseConcentrateLines             = rinse;
     payload.cmd                               = start;
-    dgReservoirDrainVolumeTargetSet           = drainToVolMl;
 
     sendDGDrainCommand( &payload );
 }
@@ -1310,7 +1311,7 @@
     U32 trimmerState  = dgHeatersData.trimmerHeaterState;
     DG_OP_MODE_T dgOp = getDGOpMode();
 
-    if ( isACPowerLost() != TRUE )
+    if ( getCPLDACPowerLossDetected() != TRUE )
     {
         if ( ( DG_MODE_GENE == dgOp ) || ( DG_MODE_FILL == dgOp ) || ( DG_MODE_DRAI == dgOp ) )
         {