Index: firmware/App/Modes/ModeStandby.c
===================================================================
diff -u -rb30c057e2f4371a0ef49248303b85f321adf7a23 -r45517234d6f05c3dad87f4206c790a771b2057da
--- firmware/App/Modes/ModeStandby.c	(.../ModeStandby.c)	(revision b30c057e2f4371a0ef49248303b85f321adf7a23)
+++ firmware/App/Modes/ModeStandby.c	(.../ModeStandby.c)	(revision 45517234d6f05c3dad87f4206c790a771b2057da)
@@ -75,6 +75,9 @@
 /// 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 );