Index: firmware/App/Services/SystemComm.c
===================================================================
diff -u -rb549cc9586c585902f891e1aac5e59b7de445f71 -r91de94219c869f3abdd5d985e3d99398c0d871af
--- firmware/App/Services/SystemComm.c	(.../SystemComm.c)	(revision b549cc9586c585902f891e1aac5e59b7de445f71)
+++ firmware/App/Services/SystemComm.c	(.../SystemComm.c)	(revision 91de94219c869f3abdd5d985e3d99398c0d871af)
@@ -7,8 +7,8 @@
 *
 * @file    SystemComm.c
 *
-* @author  (last)      Michael Garthwaite
-* @date    (last)      07-Feb-2023
+* @author  (last)      Dara Navaei
+* @date    (last)      13-Feb-2023
 *
 * @author  (original)  Dara Navaei
 * @date    (original)  05-Nov-2019
@@ -50,7 +50,7 @@
 #define MAX_COMM_CRC_FAILURE_WINDOW_MS  (10 * SEC_PER_MIN * MS_PER_SECOND)  ///< CRC error window
 
 #define MSG_NOT_ACKED_TIMEOUT_MS        150                                 ///< maximum time for a Denali message that requires ACK to be ACK'd
-#define MSG_NOT_ACKED_MAX_RETRIES       3                                   ///< maximum number of times a message that requires ACK that was not ACK'd can be re-sent before alarm
+#define MSG_NOT_ACKED_MAX_RETRIES       8                                   ///< maximum number of times a message that requires ACK that was not ACK'd can be re-sent before alarm
 #define PENDING_ACK_LIST_SIZE           25                                  ///< maximum number of Delanli messages that can be pending ACK at any given time
 
 #define MAX_FPGA_CLOCK_SPEED_ERRORS             3                           ///< maximum number of FPGA clock speed errors within window period before alarm
@@ -816,60 +816,60 @@
             handleAlarmClear( message );
             break;
 
-        case MSG_ID_RTC_EPOCH:
+        case MSG_ID_RTC_EPOCH_DATA:
             handleRTCSyncFromHD( message );
             break;
 
         case MSG_ID_SET_DG_DIALYSATE_TEMP_TARGETS:
             handleSetDialysateTemperatureCmd( message );
             break;
 
-        case MSG_ID_REQUEST_FW_VERSIONS:
+        case MSG_ID_FW_VERSIONS_REQUEST:
             handleFWVersionCmd( message );
             handleDGSerialNumberRequest();
             break;
 
-        case MSG_ID_DG_SWITCH_RESERVOIR_CMD:
+        case MSG_ID_DG_SWITCH_RESERVOIR_CMD_REQUEST:
             handleSwitchReservoirCmd( message );
             break;
 
-        case MSG_ID_DG_CHANGE_VALVE_SETTING_CMD:
+        case MSG_ID_DG_CHANGE_VALVE_SETTING_CMD_REQUEST:
             handleChangeValveSettingCmd( message );
             break;
 
-        case MSG_ID_DG_FILL_CMD:
+        case MSG_ID_DG_FILL_CMD_REQUEST:
             handleFillCmd( message );
             break;
 
-        case MSG_ID_DG_DRAIN_CMD:
+        case MSG_ID_DG_DRAIN_CMD_REQUEST:
             handleDrainCmd( message );
             break;
 
-        case MSG_ID_HD_OP_MODE:
+        case MSG_ID_HD_OP_MODE_DATA:
             handleSetHDOperationMode( message );
             break;
 
-        case MSG_ID_STARTING_STOPPING_TREATMENT_CMD:
+        case MSG_ID_STARTING_STOPPING_TREATMENT_CMD_REQUEST:
             handleStartStopTreatmentMsg( message );
             break;
 
-        case MSG_ID_DG_SAMPLE_WATER_CMD:
+        case MSG_ID_DG_SAMPLE_WATER_CMD_REQUEST:
             handleSampleWaterCmd( message );
             break;
 
-        case MSG_ID_HD_START_STOP_TRIMMER_HEATER_CMD:
+        case MSG_ID_HD_START_STOP_TRIMMER_HEATER_CMD_REQUEST:
             handleHDStartStopTrimmerHeaterCmd( message );
             break;
 
         case MSG_ID_DG_START_STOP_TRIMMER_HEATER_CMD:
             handleDGStartStopTrimmerHeater( message );
             break;
 
-        case MSG_ID_DG_START_STOP_FLUSH:
+        case MSG_ID_DG_START_STOP_FLUSH_CMD_REQUEST:
             handleStartStopDGFlush( message );
             break;
 
-        case MSG_ID_DG_START_STOP_HEAT_DISINFECT:
+        case MSG_ID_DG_START_STOP_HEAT_DISINFECT_CMD_REQUEST:
             handleStartStopDGHeatDisinfect( message );
             break;
 
@@ -889,35 +889,35 @@
             handleDGPOSTResultRequest( message );
             break;
 
-        case MSG_ID_HD_REQUEST_DG_SERVICE_RECORD:
+        case MSG_ID_HD_DG_SERVICE_RECORD_REQUEST:
             handleDGServiceScheduleRequest( message );
             break;
 
-        case MSG_ID_HD_REQUEST_DG_CONCENTRATE_MIXING_RATIOS:
+        case MSG_ID_HD_DG_CONCENTRATE_MIXING_RATIOS_REQUEST:
             handleDGSendConcentrateMixingRatios( message );
             break;
 
-        case MSG_ID_HD_REQUEST_DG_USAGE_INFO:
-            handleHDRequestDGUsageInfo( message );
+        case MSG_ID_HD_DG_SERVICE_MODE_REQUEST:
+            handleServiceModeRequest( message );
             break;
 
-        case MSG_ID_HD_REQUEST_DG_SERVICE_MODE:
-            handleServiceModeRequest( message );
+        case MSG_ID_HD_DG_USAGE_INFO_REQUEST:
+            handleHDRequestDGUsageInfo( message );
             break;
 
-        case MSG_ID_DG_SET_SERVICE_TIME:
+        case MSG_ID_DG_SET_SERVICE_TIME_REQUEST:
             handleSetDGServiceTime( message );
             break;
 
         case MSG_ID_DG_START_STOP_HEAT_DISINFECT_ACTIVE_COOL:
             handleStartStopDGHeatDisinfectActiveCool( message );
             break;
 
-        case MSG_ID_REQUEST_CPLD_STATUS:
+        case MSG_ID_CPLD_STATUS_REQUEST:
             handleCpldStatusRequest( message );
             break;
 
-        case MSG_ID_HD_REQUEST_DG_ALARMS:
+        case MSG_ID_HD_DG_ALARMS_REQUEST:
             handleResendAllAlarmsCommand( message );
             break;