Index: dialin/dg/hd_proxy.py
===================================================================
diff -u -rf8387df23789b74fba26df353fb88a14b99de199 -rc5c80e34ed92dbcdb2129bd36491ec5de83a21a2
--- dialin/dg/hd_proxy.py	(.../hd_proxy.py)	(revision f8387df23789b74fba26df353fb88a14b99de199)
+++ dialin/dg/hd_proxy.py	(.../hd_proxy.py)	(revision c5c80e34ed92dbcdb2129bd36491ec5de83a21a2)
@@ -107,7 +107,7 @@
             self.logger.debug("Timeout!!!!")
             return False
 
-    def cmd_drain(self, volume=200):
+    def cmd_drain(self, volume=200, tareLoadCell=False):
         """
         Constructs and sends the drain command.
         Constraints:
@@ -119,7 +119,8 @@
         """
 
         vol = integer_to_bytearray(volume)
-        payload = vol
+        tare = integer_to_bytearray(tareLoadCell)
+        payload = vol + tare
 
         message = DenaliMessage.build_message(channel_id=DenaliChannels.dialin_to_dg_ch_id,
                                               message_id=MsgIds.MSG_ID_DG_DRAIN_CMD.value,