Index: dialin/common/msg_ids.py
===================================================================
diff -u -r821d2c94ccc6542a7733a9453e59b751bfd0ef75 -re8f9ead3fe058b688c0b42c599886375e1730008
--- dialin/common/msg_ids.py	(.../msg_ids.py)	(revision 821d2c94ccc6542a7733a9453e59b751bfd0ef75)
+++ dialin/common/msg_ids.py	(.../msg_ids.py)	(revision e8f9ead3fe058b688c0b42c599886375e1730008)
@@ -470,6 +470,7 @@
     MSD_ID_DG_RTC_CTL_REG3_STATUS_OVERRIDE = 0xA063
     MSG_ID_DG_NELSON_DISINFECT_SUPPORT = 0xA064
     MSG_ID_DG_SET_DIALYSATE_MIXING_RATIOS = 0xA065
+    MSG_ID_DG_SET_TEST_CONFIGURATION = 0xA066
 
     MSG_ID_HD_DEBUG_EVENT = 0xFFF1
     MSG_ID_DG_DEBUG_EVENT = 0xFFF2
Index: dialin/common/test_config_defs.py
===================================================================
diff -u
--- dialin/common/test_config_defs.py	(revision 0)
+++ dialin/common/test_config_defs.py	(revision e8f9ead3fe058b688c0b42c599886375e1730008)
@@ -0,0 +1,18 @@
+
+from enum import unique
+from ..utils.base import DialinEnum
+
+
+@unique
+class DGTestConfigEnums(DialinEnum):
+    # NOTE: This enum has been commented out because two enums cannot have the same value but the firmware is assigned
+    # to the enum number.
+    TEST_CONFIG_ENABLE_MIXING_WITH_WATER = 0                      # Test configuration enable mixing with water.
+    # TEST_CONFIG_FIRST = TEST_CONFIG_ENABLE_MIXING_WITH_WATER,   # Test configuration first configuration.
+    NUM_OF_TEST_CONFIGS = 1                                       # Number of test configurations.
+
+
+@unique
+class HDTestConfigEnums(DialinEnum):
+    pass
+    # TODo update
Index: dialin/dg/dg_test_configs.py
===================================================================
diff -u
--- dialin/dg/dg_test_configs.py	(revision 0)
+++ dialin/dg/dg_test_configs.py	(revision e8f9ead3fe058b688c0b42c599886375e1730008)
@@ -0,0 +1,80 @@
+
+import struct
+import time
+from enum import unique
+from logging import Logger
+from time import sleep
+
+from ..common.msg_defs import MsgIds, MsgFieldPositions
+from ..common.test_config_defs import DGTestConfigEnums
+from ..protocols.CAN import DenaliMessage, DenaliChannels
+from .constants import NO_RESET, RESET
+from ..utils.conversions import integer_to_bytearray
+from ..utils.base import AbstractSubSystem, DialinEnum
+
+
+class DGTestConfig(AbstractSubSystem):
+    """
+
+    Dialysate Generator (DG) Dialin API sub-class for setting and getting the test configurations.
+    """
+
+    def __init__(self, can_interface, logger: Logger):
+        """
+
+        @param can_interface: Denali CAN Messenger object
+        """
+        super().__init__()
+
+        self.can_interface = can_interface
+        self.logger = logger
+        self.dg_test_configs = dict()
+
+        for config in DGTestConfigEnums.__members__:
+            if 'NUM_OF_TEST_CONFIGS' not in config:
+                self.dg_test_configs[config] = 0
+
+    def cmd_get_test_config_status(self, config: int):
+        """
+        Returns the status of a test config
+
+        @param config: (int) Test config to set
+        @return: the status of a test config
+        """
+        return self.dg_test_configs[DGTestConfigEnums(config).name]
+
+    def cmd_set_test_config(self, config: int, reset: int = NO_RESET):
+        """
+        Constructs and sends the DG test config
+        Constraints:
+            Must be logged into DG.
+
+        @param config: (int) Test config to set
+        @param reset: (int) 1 to reset a previous override, 0 to override
+        @return: 1 if successful, zero otherwise
+        """
+        reset_value = integer_to_bytearray(reset)
+        c = integer_to_bytearray(config)
+        payload = reset_value + c
+
+        message = DenaliMessage.build_message(channel_id=DenaliChannels.dialin_to_dg_ch_id,
+                                              message_id=MsgIds.MSG_ID_DG_SET_TEST_CONFIGURATION.value,
+                                              payload=payload)
+
+        if reset == NO_RESET:
+            self.logger.debug("Setting {}".format(DGTestConfigEnums(config).name))
+        else:
+            self.logger.debug("Resetting {}".format(DGTestConfigEnums(config).name))
+
+        # Send message
+        received_message = self.can_interface.send(message)
+
+        # If there is no 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.debug("Timeout!!!!")
+            return False
+
+
Index: dialin/dg/sw_configs.py
===================================================================
diff -u -r9bc00e997e91dab8b404aa877b02ae3d4100d417 -re8f9ead3fe058b688c0b42c599886375e1730008
--- dialin/dg/sw_configs.py	(.../sw_configs.py)	(revision 9bc00e997e91dab8b404aa877b02ae3d4100d417)
+++ dialin/dg/sw_configs.py	(.../sw_configs.py)	(revision e8f9ead3fe058b688c0b42c599886375e1730008)
@@ -182,7 +182,7 @@
                 self.dg_sw_config_record_timestamp = timestamp
                 self._handler_received_complete_dg_sw_config_record()
 
-    @publish(["dg_sw_config_record_timestamp","dg_sw_config_record"])
+    @publish(["dg_sw_config_record_timestamp", "dg_sw_config_record"])
     def _handler_received_complete_dg_sw_config_record(self):
         """
         Publishes the received software configuration record
Index: tests/dg_tests.py
===================================================================
diff -u -r6eb7388c7884a276c3c8b93aa8060feaab38081b -re8f9ead3fe058b688c0b42c599886375e1730008
--- tests/dg_tests.py	(.../dg_tests.py)	(revision 6eb7388c7884a276c3c8b93aa8060feaab38081b)
+++ tests/dg_tests.py	(.../dg_tests.py)	(revision e8f9ead3fe058b688c0b42c599886375e1730008)
@@ -522,7 +522,7 @@
     f = open(address, "w")
     #dg.heaters.cmd_heaters_broadcast_interval_override(50)
     #sleep(1)
-    dg.hd_proxy.cmd_start_stop_dg_heat_disinfect()
+    #dg.hd_proxy.cmd_start_stop_dg_heat_disinfect()
     #dg.hd_proxy.cmd_start_stop_dg_heat_disinfect_active_cool()
 
     try:
@@ -672,7 +672,7 @@
     hd.cmd_log_in_to_hd()
     sleep(1)
 
-    #run_heat_disinfect()
+    run_heat_disinfect()
 
     #run_flush_mode()
 
@@ -708,8 +708,8 @@
 
     #hd.ui.cmd_set_ro_only_mode_status(1)
 
-    while True:
-        print(get_dg_voltages_info())
-        sleep(1)
+    #while True:
+    #    print(get_dg_voltages_info())
+    #    sleep(1)