Index: firmware/App/Services/SystemCommMessages.c
===================================================================
diff -u -rbd738c0705e8640d2c532ecece876aaa3496ee32 -rc2b71cdf84febca251700488647c001604ba2e7b
--- firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision bd738c0705e8640d2c532ecece876aaa3496ee32)
+++ firmware/App/Services/SystemCommMessages.c	(.../SystemCommMessages.c)	(revision c2b71cdf84febca251700488647c001604ba2e7b)
@@ -24,7 +24,6 @@
 #include "DGInterface.h"
 #include "DialInFlow.h"
 #include "Dialysis.h"
-#include "MsgQueues.h"
 #include "ModeTreatment.h"
 #include "PresOccl.h"
 #include "WatchdogMgmt.h"
@@ -913,6 +912,35 @@
     return result;
 }
 
+/*************************************************************************
+ * @brief
+ * The broadcastHDOperationMode function constructs an HD operation mode \n
+ * broadcast message and queues the msg for transmit on the appropriate CAN channel.
+ * @details
+ * Inputs : none
+ * Outputs : HD operation mode msg constructed and queued
+ * @param mode : current HD operation mode.
+ * @return TRUE if msg successfully queued for transmit, FALSE if not
+ *************************************************************************/
+BOOL broadcastHDOperationMode( U32 mode )
+{
+    BOOL result;
+    MESSAGE_T msg;
+    U08 *payloadPtr = msg.payload;
+
+    // create a message record
+    blankMessage( &msg );
+    msg.hdr.msgID = MSG_ID_HD_OP_MODE;
+    msg.hdr.payloadLen = sizeof( U32 );
+
+    memcpy( payloadPtr, &mode, sizeof( U32 ) );
+
+    // serialize the message (w/ sync, CRC, and appropriate CAN padding) and add serialized message data to appropriate comm buffer
+    result = serializeMessage( msg, COMM_BUFFER_OUT_CAN_HD_BROADCAST, ACK_NOT_REQUIRED );
+
+    return result;
+}
+
 // ***********************************************************************
 // **************** Message Handling Helper Functions ********************
 // ***********************************************************************