Index: leahi_dialin/ui/td_messaging.py
===================================================================
diff -u -r1b42314e7ec473f90ea1343fe66e985a34fd3fda -r6c3691ac6a0ce63906e51339eb00ce7409be2197
--- leahi_dialin/ui/td_messaging.py	(.../td_messaging.py)	(revision 1b42314e7ec473f90ea1343fe66e985a34fd3fda)
+++ leahi_dialin/ui/td_messaging.py	(.../td_messaging.py)	(revision 6c3691ac6a0ce63906e51339eb00ce7409be2197)
@@ -513,7 +513,7 @@
                                             payload=payload)
 
         self.can_interface.send(message, 0)
-    
+
     def td_treatment_time(  self, 
                             tx_duration_s       : int , 
                             tx_elapsed_s        : int , 
@@ -607,6 +607,32 @@
 
         self.can_interface.send(message, 0)
 
+
+    def td_blood_prime_progress(self,
+                       target_volume     : float ,
+                       delivered_volume  : float ):
+        """
+        Broadcasts blood prime data (Msg ID: 0x4F, 79)
+        Args:
+            @param target_volume    (float) : Target Volume
+            @param delivered_volume (float) : Delivered Volume
+        @return: None
+        """
+
+        if not self.can_enabled:
+            raise ValueError("CAN Interface is not enabled")
+
+        payload =  conversions.float_to_bytearray   (target_volume      )
+        payload += conversions.float_to_bytearray   (delivered_volume   )
+
+        message = CAN.DenaliMessage.build_message(
+            channel_id=CAN.DenaliChannels.td_sync_broadcast_ch_id,
+            message_id=msg_ids.MsgIds.MSG_ID_TD_BLOOD_PRIME_PROGRESS_DATA.value,
+            payload=payload)
+
+        self.can_interface.send(message, 0)
+
+
     def td_versions(self, major: int, minor: int, micro: int, build: int,
                         fpga_id: int, fpga_major: int, fpga_minor: int, fpga_lab: int,
                         compatibility_rev: int):