Index: leahi_dialin/common/dd_defs.py
===================================================================
diff -u -rcf2068872f9d6c000e67ede2dca3e207aa1d041e -rbeb046149da1b7cf85dbdadb500467490f350fb8
--- leahi_dialin/common/dd_defs.py	(.../dd_defs.py)	(revision cf2068872f9d6c000e67ede2dca3e207aa1d041e)
+++ leahi_dialin/common/dd_defs.py	(.../dd_defs.py)	(revision beb046149da1b7cf85dbdadb500467490f350fb8)
@@ -162,4 +162,71 @@
 class DDDialysatePumpsStates(DialinEnum):
     DIALYSATE_PUMP_OFF_STATE = 0
     DIALYSATE_PUMP_RAMP_UP_STATE = 1
-    DIALYSATE_PUMP_CONTROL_TO_TARGET_STATE = 2
\ No newline at end of file
+    DIALYSATE_PUMP_CONTROL_TO_TARGET_STATE = 2
+
+@unique
+class HeatersStartStop(DialinEnum):
+    STOP = 0
+    START = 1
+
+@unique
+class HeatersState(DialinEnum):
+    HEATER_EXEC_STATE_OFF = 0
+    HEATER_EXEC_STATE_RAMP_TO_TARGET = 1
+    HEATER_EXEC_STATE_CONTROL_TO_TARGET = 2
+    HEATER_EXEC_STATE_CONTROL_TO_DISINFECT_TARGET = 3
+    NUM_OF_HEATERS_STATE = 4
+
+@unique
+class HeatersNames(DialinEnum):
+    D5_HEAT = 0
+    D45_HEAT = 1
+    NUM_OF_DD_HEATERS = 2
+
+@unique
+class HeatersAttributesEnum(DialinEnum):
+    HEAT_DUTY_CYCLE = 0
+    HEAT_TARGET_TEMP = 1
+    HEAT_STATE = 2
+    DUTY_CYCLE_COUNT = 3
+    PWM_PERIOD = 4
+    ADJUSTED_TARGET_TEMP = 5
+    TARGET_TEMP_TD = 6
+
+@unique
+class DDLevelSensorEnum(DialinEnum):
+    D6_LEVEL = 0  # floater switch low, medium and high status
+    D63_LEVEL = 1  # bicarb level low or high status
+    D46_LEVEL = 2  # Spent dialysate air separation chamber level low or high status
+    NUM_OF_LEVELS = 3
+
+@unique
+class DDPistonPumpsEnum(DialinEnum):
+    ACID = 0  # Acid piston pump
+    BICARB = 1  # Bicarbonate piston pump
+    UF = 2  # Ultrafilteration piston pump
+    NUM_OF_PISTON_PUMPS = 3  # Number of piston pumps
+
+@unique
+class DDPistonPumpAttributesEnum(DialinEnum):
+    CONTROL_STATE = 0,
+    SW_COUNTER = 1,
+    CYCLE_COUNTER = 2
+
+@unique
+class PressureNames(DialinEnum):
+    # Pressure Sensor IDs
+    M1_PRES = 0                          # Water Inlet pressure before regulator (PRi)
+    M3_PRES = 1                          # Water Inlet pressure after regulator (PRo)
+    D9_PRES = 2                          # Hydraulics outlet pressure (PHo/Pn)
+    D66_PRES = 3                         # Dry Bicarb pressure (PDB/PCb)
+    D51_PRES = 4                         # Spent Dialysate pressure (PDs)
+    D18_PRES = 5                         # Fresh Dialysate pressure (PDf)
+    D41_PRES = 6                         # Transmembrane pressure (Ptm)
+    BARO_PRES = 7                        # Barometric pressure sensor
+    NUM_OF_PRESSURE_SENSORS = 8
+
+@unique
+class PressureAttributesEnum (DialinEnum):
+    PRES = 0
+    TEMP = 1
\ No newline at end of file