Index: DialysateGenerator.py
===================================================================
diff -u -r775bd1d38729a446678d843b8d36a5ae0eae5f97 -rf074dd41fb66e0e082a2904068bae426839dc575
--- DialysateGenerator.py	(.../DialysateGenerator.py)	(revision 775bd1d38729a446678d843b8d36a5ae0eae5f97)
+++ DialysateGenerator.py	(.../DialysateGenerator.py)	(revision f074dd41fb66e0e082a2904068bae426839dc575)
@@ -39,6 +39,9 @@
 
     """
 
+    DG_MSG_ID_FILL_COMMAND = 0xA000
+    DG_MSG_ID_BROADCAST = 0XA100
+
     def __init__(self, can__interface="can0"):
         """
             DG constructor using can bus
@@ -55,7 +58,7 @@
         # Create listener
         self.__can_interface = DenaliCanMessenger(can_interface=can__interface)
         self.__can_interface.registerReceivingPublicationFunction(channel_id=DenaliChannels.dg_sync_broadcast_ch_id,
-                                                                  message_id=0x7100,
+                                                                  message_id=self.DG_MSG_ID_BROADCAST,
                                                                   function=PublicationReceiverHandler)
         self.__can_interface.start()
 
@@ -71,7 +74,7 @@
         payload = [1] if start_or_stop == 'start' else [0]
 
         msg = DenaliMessage.buildMessage(channel_id=DenaliChannels.hd_to_dg_ch_id,
-                                         message_id=1000,
+                                         message_id=self.DG_MSG_ID_FILL_COMMAND,
                                          payload=payload)
 
         # Send message