Index: leahi_dialin/dd/proxies/td_proxy.py
===================================================================
diff -u -re45b20cdc5d4c5dcff8cef530b173ca94cb2e422 -r1cc1305826350e41fa085a2b6d1bd2f66a0c3ea0
--- leahi_dialin/dd/proxies/td_proxy.py	(.../td_proxy.py)	(revision e45b20cdc5d4c5dcff8cef530b173ca94cb2e422)
+++ leahi_dialin/dd/proxies/td_proxy.py	(.../td_proxy.py)	(revision 1cc1305826350e41fa085a2b6d1bd2f66a0c3ea0)
@@ -85,7 +85,8 @@
 
 
     def cmd_td_send_dd_gen_dialysate_request(self, start: bool = 0, dial_rate: float = 0, uf_rate: float = 0,
-                                             dial_temp: float = 0, bypass: int = 0, acid_conv_factor: float = 0.0, bicarb_conv_factor: float = 0.0, sodium: int = 0, bicarb_volume: int = 0):
+                                             dial_temp: float = 0, bypass: int = 0, acid_conv_factor: float = 0.0,
+                                             bicarb_conv_factor: float = 0.0, sodium: int = 0, bicarb_volume: int = 0, sub_rate: float = 0):
         """
         Constructs and sends a TD gen dialysate request to the DD.
 
@@ -100,7 +101,8 @@
         bic = float_to_bytearray(bicarb_conv_factor)
         sod = integer_to_bytearray(sodium)
         bvl = integer_to_bytearray(bicarb_volume)
-        payload = stt + dial + uf + temp + byp + acd + bic + sod + bvl
+        sub = float_to_bytearray(sub_rate)
+        payload = stt + dial + uf + temp + byp + acd + bic + sod + bvl + sub
 
         cmd_generic_override(payload = payload,
                              reset = None,