Index: leahi_dialin/dd/modules/drybicart.py
===================================================================
diff -u -re16372ac648dd4efca346c889348b08c8653ee17 -re2b4c560c69fa8c593dd59020b7d315b7ee315a8
--- leahi_dialin/dd/modules/drybicart.py	(.../drybicart.py)	(revision e16372ac648dd4efca346c889348b08c8653ee17)
+++ leahi_dialin/dd/modules/drybicart.py	(.../drybicart.py)	(revision e2b4c560c69fa8c593dd59020b7d315b7ee315a8)
@@ -58,12 +58,14 @@
         self.dd_dry_bicart_last_fill_time = 0
         self.dd_dry_bicart_current_fill_time = 0
         self.dd_dry_bicart_timestamp = 0
+        self.dd_dryBiCartType = 0
+        self.dd_dryBiCartDrainTimePeriod = 0
 
     @publish(["msg_id_dd_dry_bicart_data",
               "dd_dry_bicart_fill_execution_state", "dd_bicarb_chamber_fill_execution_state", "dd_dry_bicart_drain_execution_state",
               "dd_dry_bicart_fill_cycle_counter", "dd_dry_bicart_max_fill_cycle_count",
               "dd_dry_bicart_fill_request", "dry_bicarb_chamber_fill_request", "dd_dry_bicart_drain_request",
-              "dd_dry_bicart_last_fill_time", "dd_dry_bicart_current_fill_time",
+              "dd_dry_bicart_last_fill_time", "dd_dry_bicart_current_fill_time", "dd_dryBiCartType", "dd_dryBiCartDrainTimePeriod",
               "dd_dry_bicart_timestamp"])
     def _handler_dry_bicart_sync(self, message, timestamp=0.0):
         """
@@ -93,6 +95,10 @@
             message['message'][MsgFieldPositions.START_POS_FIELD_9:MsgFieldPositions.END_POS_FIELD_9]))[0]
         self.dd_dry_bicart_current_fill_time = struct.unpack('I', bytearray(
             message['message'][MsgFieldPositions.START_POS_FIELD_10:MsgFieldPositions.END_POS_FIELD_10]))[0]
+        self.dd_dryBiCartType = struct.unpack('I', bytearray(
+            message['message'][MsgFieldPositions.START_POS_FIELD_11:MsgFieldPositions.END_POS_FIELD_11]))[0]
+        self.dd_dryBiCartDrainTimePeriod = struct.unpack('I', bytearray(
+            message['message'][MsgFieldPositions.START_POS_FIELD_12:MsgFieldPositions.END_POS_FIELD_12]))[0]
 
         self.dd_dry_bicart_timestamp = timestamp
 
@@ -254,4 +260,33 @@
             return received_message['message'][DenaliMessage.PAYLOAD_START_INDEX]
         else:
             self.logger.error("Timeout!!!!")
-            return False
\ No newline at end of file
+            return False
+    def cmd_dry_bicart_cartridge_size_override(self, small_large: int, reset: int = NO_RESET) -> int:
+        """
+        Constructs and sends the dry bicart cartridge size override command
+        Constraints:
+            Must be logged into DD.
+
+        @param small_large:  int - value for small or large dry bicart ( small = 0, large = 1
+        @return: 1 if successful, zero otherwise
+
+        """
+
+        cartridge_size = integer_to_bytearray(small_large)
+        reset_byte_array = integer_to_bytearray(reset)
+        payload = reset_byte_array + cartridge_size
+
+        message = DenaliMessage.build_message(channel_id=DenaliChannels.dialin_to_dd_ch_id,
+                                              message_id=MsgIds.MSG_ID_DD_BICART_CARTRIDGE_SELECT_OVERRIDE_REQUEST.value,
+                                              payload=payload)
+
+        # Send message
+        received_message = self.can_interface.send(message)
+
+        # If there is content...
+        if received_message is not None:
+            # response payload is OK or not OK
+            return received_message['message'][DenaliMessage.PAYLOAD_START_INDEX]
+        else:
+            self.logger.error("Timeout!!!!")
+            return False