Index: leahi_dialin/dd/modules/dialysate_pump.py
===================================================================
diff -u -re45b20cdc5d4c5dcff8cef530b173ca94cb2e422 -re48e2e9af260dc96a407bf4a26f4a18713318ae6
--- leahi_dialin/dd/modules/dialysate_pump.py	(.../dialysate_pump.py)	(revision e45b20cdc5d4c5dcff8cef530b173ca94cb2e422)
+++ leahi_dialin/dd/modules/dialysate_pump.py	(.../dialysate_pump.py)	(revision e48e2e9af260dc96a407bf4a26f4a18713318ae6)
@@ -58,25 +58,25 @@
                 dd_enum_repository.DDDialysatePumpAttributes.TARGET_RPM.name: 0.0,
                 dd_enum_repository.DDDialysatePumpAttributes.MEASURED_SPEED.name: 0.0,
                 dd_enum_repository.DDDialysatePumpAttributes.CURRENT_SPEED.name: 0.0,
-                dd_enum_repository.DDDialysatePumpAttributes.STATE.name: 0.0,
+                dd_enum_repository.DDDialysatePumpAttributes.STATE.name: 0,
                 dd_enum_repository.DDDialysatePumpAttributes.TARGET_PRESSURE.name: 0.0,
                 dd_enum_repository.DDDialysatePumpAttributes.MEASURED_PRESSURE.name: 0.0,
                 dd_enum_repository.DDDialysatePumpAttributes.MEASURED_CURRENT.name: 0.0,
-                dd_enum_repository.DDDialysatePumpAttributes.CONTROL.name: 0.0,
-                dd_enum_repository.DDDialysatePumpAttributes.DIRECTION_ERROR_COUNT.name: 0.0,
-                dd_enum_repository.DDDialysatePumpAttributes.MEASURED_DIRECTION.name: 0.0
+                dd_enum_repository.DDDialysatePumpAttributes.CONTROL.name: 0,
+                dd_enum_repository.DDDialysatePumpAttributes.DIRECTION_ERROR_COUNT.name: 0,
+                dd_enum_repository.DDDialysatePumpAttributes.MEASURED_DIRECTION.name: 0
             },
             dd_enum_repository.DDDialysatePumpNames.D48_PUMP.name: {
                 dd_enum_repository.DDDialysatePumpAttributes.TARGET_RPM.name: 0.0,
                 dd_enum_repository.DDDialysatePumpAttributes.MEASURED_SPEED.name: 0.0,
                 dd_enum_repository.DDDialysatePumpAttributes.CURRENT_SPEED.name: 0.0,
-                dd_enum_repository.DDDialysatePumpAttributes.STATE.name: 0.0,
+                dd_enum_repository.DDDialysatePumpAttributes.STATE.name: 0,
                 dd_enum_repository.DDDialysatePumpAttributes.TARGET_PRESSURE.name: 0.0,
                 dd_enum_repository.DDDialysatePumpAttributes.MEASURED_PRESSURE.name: 0.0,
                 dd_enum_repository.DDDialysatePumpAttributes.MEASURED_CURRENT.name: 0.0,
-                dd_enum_repository.DDDialysatePumpAttributes.CONTROL.name: 0.0,
-                dd_enum_repository.DDDialysatePumpAttributes.DIRECTION_ERROR_COUNT.name: 0.0,
-                dd_enum_repository.DDDialysatePumpAttributes.MEASURED_DIRECTION.name: 0.0
+                dd_enum_repository.DDDialysatePumpAttributes.CONTROL.name: 0,
+                dd_enum_repository.DDDialysatePumpAttributes.DIRECTION_ERROR_COUNT.name: 0,
+                dd_enum_repository.DDDialysatePumpAttributes.MEASURED_DIRECTION.name: 0
             }
         }
 
Index: leahi_dialin/dd/proxies/td_proxy.py
===================================================================
diff -u -r1cc1305826350e41fa085a2b6d1bd2f66a0c3ea0 -re48e2e9af260dc96a407bf4a26f4a18713318ae6
--- leahi_dialin/dd/proxies/td_proxy.py	(.../td_proxy.py)	(revision 1cc1305826350e41fa085a2b6d1bd2f66a0c3ea0)
+++ leahi_dialin/dd/proxies/td_proxy.py	(.../td_proxy.py)	(revision e48e2e9af260dc96a407bf4a26f4a18713318ae6)
@@ -115,14 +115,18 @@
 
 
     def cmd_td_send_dd_start_pre_gen_request(self, start: bool = 0, dialysate_rate: float = 0.0, dialysate_temp: float = 0.0,
-                                             acid_conv_factor: float = 0.0, bicarb_conv_factor: float = 0.0, sodium: int = 0, bicarb_volume: int = 0):
+                                             acid_conv_factor: float = 0.0, bicarb_conv_factor: float = 0.0, sodium: int = 0, bicarb_volume: int = 0, substitution_rate: float=0.0):
         """
-                Constructs and sends a TD start pre gen dialysate request to the DD.
-        :param start: start and stop boolean
-        :param dialysate_rate: dialysate rate in ml/min
-        :param dialysate_temp: dialysate temp in c
-        :param acid_type: acid type
-        :param bicarb_type: bicarb type
+        Constructs and sends a TD start pre gen dialysate request to the DD.
+
+        :param start: (Boolean) start and stop boolean
+        :param dialysate_rate: (Float) dialysate rate in ml/min
+        :param dialysate_temp: (Float) dialysate temp in c
+        :param acid_conv_factor: (Float) acid conversion factor
+        :param bicarb_conv_factor: (Float) bicarb conversion factor
+        :param sodium: (Integer) bicarb conversion factor
+        :param bicarb_volume: (Integer) bicarb volume
+        :param substitution_rate: (Float) substitution rate
         :return:
         """
         stt = integer_to_bytearray(start)
@@ -132,7 +136,8 @@
         bic = float_to_bytearray(bicarb_conv_factor)
         sod = integer_to_bytearray(sodium)
         bvl = integer_to_bytearray(bicarb_volume)
-        payload = stt + dial + temp + acd + bic + sod + bvl
+        sub = float_to_bytearray(substitution_rate)
+        payload = stt + dial + temp + acd + bic + sod + bvl + sub
 
         cmd_generic_override(payload = payload,
                              reset = None,