Index: firmware/App/Controllers/PresOccl.c
===================================================================
diff -u -r4cb7ce68f0458ecca1ba1fbb596bc26a4bc39226 -r28310e94db333fdc125918afa74d212b511e2425
--- firmware/App/Controllers/PresOccl.c	(.../PresOccl.c)	(revision 4cb7ce68f0458ecca1ba1fbb596bc26a4bc39226)
+++ firmware/App/Controllers/PresOccl.c	(.../PresOccl.c)	(revision 28310e94db333fdc125918afa74d212b511e2425)
@@ -87,6 +87,7 @@
 
 #define PSI_TO_MMHG                         ( 51.7149F )                                    ///< Conversion factor for converting PSI to mmHg.
 
+// The new arterial pressure sensor is the same as the venous pressure sensor
 #define VENOUS_PRESSURE_NORMAL_OP           0                                               ///< Venous pressure status bits indicate normal operation.
 #define VENOUS_PRESSURE_CMD_MODE            1                                               ///< Venous pressure status bits indicate sensor in command mode.
 #define VENOUS_PRESSURE_STALE_DATA          2                                               ///< Venous pressure status bits indicate data is stale (no new data since last fpga read).
@@ -938,7 +939,6 @@
                 }
             }
         }
-
         // Check for occlusion in Treatment modes where pumps are moving
         else if ( MODE_TREA == hdMode )
         {
Index: firmware/App/Modes/ModeStandby.c
===================================================================
diff -u -r2f68e3a96bb03d12141a84f1da6df83e66fed72d -r28310e94db333fdc125918afa74d212b511e2425
--- firmware/App/Modes/ModeStandby.c	(.../ModeStandby.c)	(revision 2f68e3a96bb03d12141a84f1da6df83e66fed72d)
+++ firmware/App/Modes/ModeStandby.c	(.../ModeStandby.c)	(revision 28310e94db333fdc125918afa74d212b511e2425)
@@ -76,6 +76,9 @@
 /// Interval (in task intervals) at which to publish standby mode data to CAN bus.
 static OVERRIDE_U32_T standbyModePublishInterval = { DISINFECTS_DATA_PUB_INTERVAL, DISINFECTS_DATA_PUB_INTERVAL, DISINFECTS_DATA_PUB_INTERVAL, 0 };
 
+static const U32 SERVICE_TIME_INTERVAL_S = (U32)( 365 * 0.5 * SECONDS_IN_A_DAY );              ///< HD/DG 6-month service interval in seconds.
+static BOOL homingInitiated;                                                                   ///< Flag indicates actuator homing has been initiated from standby mode.
+
 // ********** private function prototypes **********
 
 static HD_STANDBY_STATE_T handleStandbyModeStartState( void );