Index: leahi_dialin/dd/modules/balancing_chamber.py
===================================================================
diff -u -r18c90a1b2b6c7339bdd192a2d2fac32f2b8a35df -r90f9b4334fd2c3e51dbe204b3b5e224ce5e88588
--- leahi_dialin/dd/modules/balancing_chamber.py	(.../balancing_chamber.py)	(revision 18c90a1b2b6c7339bdd192a2d2fac32f2b8a35df)
+++ leahi_dialin/dd/modules/balancing_chamber.py	(.../balancing_chamber.py)	(revision 90f9b4334fd2c3e51dbe204b3b5e224ce5e88588)
@@ -80,7 +80,7 @@
         self.switching_period = struct.unpack('I', bytearray(
             message['message'][MsgFieldPositions.START_POS_FIELD_4:MsgFieldPositions.END_POS_FIELD_4]))[0]
         self.bal_chamber_fill_in_progress = struct.unpack('I', bytearray(
-            message['message'][MsgFieldPositions.START_POS_FIELD_5:MsgFieldPositions.END_POS_FIELD_6]))[0]
+            message['message'][MsgFieldPositions.START_POS_FIELD_5:MsgFieldPositions.END_POS_FIELD_5]))[0]
         self.current_bal_chamber_switching_counter = struct.unpack('I', bytearray(
             message['message'][MsgFieldPositions.START_POS_FIELD_6:MsgFieldPositions.END_POS_FIELD_6]))[0]
         self.is_pressure_stabilized_during_fill = struct.unpack('I', bytearray(