Index: dialin/dg/hd_proxy.py
===================================================================
diff -u -rfffbd99bcd6d15ce790e490e3b455fda43e34b8d -r8bdc5afe603faab1247807fce2b875834468cefe
--- dialin/dg/hd_proxy.py	(.../hd_proxy.py)	(revision fffbd99bcd6d15ce790e490e3b455fda43e34b8d)
+++ dialin/dg/hd_proxy.py	(.../hd_proxy.py)	(revision 8bdc5afe603faab1247807fce2b875834468cefe)
@@ -82,19 +82,19 @@
             self.logger.debug("Timeout!!!!")
             return False
 
-    def cmd_fill(self, volume=1500):
+    def cmd_fill(self, volume=1500, start=1):
         """
         Constructs and sends the fill command.
         Constraints:
             DG must be in re-circulate water state of re-circulate mode.
             Given fill to volume must be between 0 and 1950 mL.
 
         @param volume:  unsigned int - volume (in mL) to fill inactive reservoir to.
+        @param start: unsigned int - 1 = start fill, 0 = stop fill.
         @return: 1 if successful, zero otherwise
         """
 
-        vol = integer_to_bytearray(volume)
-        payload = vol
+        payload = integer_to_bytearray(volume) + integer_to_bytearray(start)
 
         message = DenaliMessage.build_message(channel_id=DenaliChannels.dialin_to_dg_ch_id,
                                               message_id=MsgIds.MSG_ID_DG_FILL_CMD.value,
@@ -121,6 +121,7 @@
             Given drain to volume must be between 0 and 1950 mL.
 
         @param volume:  unsigned int - volume (in mL) to drain the inactive reservoir to.
+        @param tareLoadCell:  bool - flag indicates to tare loadcell.
         @return: 1 if successful, zero otherwise
         """