Index: firmware/App/Modes/ModeStandby.c
===================================================================
diff -u -r16c791301d13ab6517185c84cb00db53fe16564b -rfe3a4b13527ae0cdd2377d9c8971bc541979e2d5
--- firmware/App/Modes/ModeStandby.c	(.../ModeStandby.c)	(revision 16c791301d13ab6517185c84cb00db53fe16564b)
+++ firmware/App/Modes/ModeStandby.c	(.../ModeStandby.c)	(revision fe3a4b13527ae0cdd2377d9c8971bc541979e2d5)
@@ -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 );