Index: firmware/App/Modes/ModePreTreat.c
===================================================================
diff -u -r633861a3e472c1a288fa10a52ec0f7e7153e4dce -rb6b733b8d1f25bc2dbe2a94c620cd80aa3ae06f7
--- firmware/App/Modes/ModePreTreat.c	(.../ModePreTreat.c)	(revision 633861a3e472c1a288fa10a52ec0f7e7153e4dce)
+++ firmware/App/Modes/ModePreTreat.c	(.../ModePreTreat.c)	(revision b6b733b8d1f25bc2dbe2a94c620cd80aa3ae06f7)
@@ -24,6 +24,7 @@
 #include "SelfTests.h"
 #include "SampleWater.h"
 #include "SystemCommMessages.h"
+#include "TaskGeneral.h"
 
 /**
  *  @addtogroup HDPreTreatmentMode
@@ -32,16 +33,21 @@
 
 // ********** private definitions **********
 
+///< Interval (ms/task time) at which the pre-treatment state data is published on the CAN bus.
+#define PRE_TREATMENT_DATA_PUB_INTERVAL        ( MS_PER_SECOND / TASK_GENERAL_INTERVAL )
+
 // ********** private data **********
 
 static BOOL treatStartReqReceived = FALSE;                              ///< Flag indicates user requests treatment begin.
 static BOOL alarmActionStopReceived = FALSE;                            ///< Flag indicates an alarm w/ stop property was triggered.
 static BOOL alarmActionResumeReceived = FALSE;                          ///< Flag indicates alarm action resume received.
 
 static HD_PRE_TREATMENT_MODE_STATE_T currentPreTreatmentState;          ///< Current state of pre-treatment mode state machine.
+static U32 preTreatmentPublishTimerCounter;                             ///< Pre-treatment data broadcast timer counter used to schedule when to transmit data.
 
 // ********** private function prototypes **********
 
+static void publishPreTreatmentState( void );
 static void resetSignalFlags( void );
 
 static HD_PRE_TREATMENT_MODE_STATE_T handleWaterSampleState( void );
@@ -142,6 +148,9 @@
     // Alarm response request flags should be handled at this point, reset in case not handled in current state
     resetSignalFlags();
 
+    // Broadcast pre-treatment data
+    publishPreTreatmentState();
+
     return (U32)currentPreTreatmentState;
 }
 
@@ -206,6 +215,34 @@
 
 /*********************************************************************//**
  * @brief
+ * The publishPreTreatmentState function broadcasts pre-treatment sub-mode
+ * and current sub-mode state.
+ * @details Inputs: pre-treatment sub-mode, state
+ * @details Outputs: pre-treatment sub-mode, state messages sent on interval
+ * @return none
+ *************************************************************************/
+static void publishPreTreatmentState( void )
+{
+    // Broadcast treatment time and state data at interval
+    if ( ++preTreatmentPublishTimerCounter >= PRE_TREATMENT_DATA_PUB_INTERVAL )
+    {
+        PRE_TREATMENT_STATE_DATA_T preTreatmentData;
+
+        preTreatmentData.preTreatmentSubMode = currentPreTreatmentState;
+        preTreatmentData.sampleWaterState = getSampleWaterState();
+        preTreatmentData.noCartSelfTestsState = getNoCartSelfTestsState();
+        preTreatmentData.installState = 0; // TODO: Add install state from the module
+        preTreatmentData.drySelfTestsState = getDrySelfTestsState();
+        preTreatmentData.primeState = getPrimeState();
+        preTreatmentData.patientConnectionState = 0; // TODO: Add patient connection state from the module
+
+        broadcastPreTreatmentState( &preTreatmentData );
+        preTreatmentPublishTimerCounter = 0;
+    }
+}
+
+/*********************************************************************//**
+ * @brief
  * The resetSignalFlags function resets all signal flags.
  * @details Inputs: none
  * @details Outputs: signal flags set to FALSE