Index: firmware/App/Services/DDInterface.c
===================================================================
diff -u -rfc697848283d289571f9d365b28acf44beb0883e -r9c833ef5623ce842267e284d958820ac0dc3a7fc
--- firmware/App/Services/DDInterface.c	(.../DDInterface.c)	(revision fc697848283d289571f9d365b28acf44beb0883e)
+++ firmware/App/Services/DDInterface.c	(.../DDInterface.c)	(revision 9c833ef5623ce842267e284d958820ac0dc3a7fc)
@@ -114,7 +114,6 @@
     dialysateDeliveryCmdSet.start             = FALSE;
     dialysateDeliveryCmdSet.dialRate          = 0.0F;
     dialysateDeliveryCmdSet.ufRate            = 0.0F;
-    dialysateDeliveryCmdSet.hdfRate           = 0.0F;    
     dialysateDeliveryCmdSet.dialTemp          = 0.0F;
     dialysateDeliveryCmdSet.bypassDialyzer    = TRUE;
     dialysateDeliveryCmdSet.acidConvFactor    = 0.0F;
@@ -383,7 +382,6 @@
  * @details \b Message \b Sent: Start/continue generate dialysate command.
  * @param qd Target dialysate flow rate (Qd).
  * @param quf Target ultrafiltration rate (Quf) (in mL/min).
- * @param qhdf Hemodiafiltration rate (Qhdf) (in mL/min).
  * @param dialTemp Target dialysate temperature in deg C.
  * @param bypass Flag indicating whether dialyzer should be bypassed.
  * @param acidConvFactor Conversion factor for the acid used.
@@ -392,12 +390,11 @@
  * @param bicarbonate Level of bicarbonate used in mEq/L.
  * @return none
  *************************************************************************/
-void cmdStartGenerateDialysate( F32 qd, F32 quf, F32 qhdf, F32 dialTemp, BOOL bypass, F32 acidConvFactor, F32 bicarbConvFactor, U32 sodium, U32 bicarbonate )
+void cmdStartGenerateDialysate( F32 qd, F32 quf, F32 dialTemp, BOOL bypass, F32 acidConvFactor, F32 bicarbConvFactor, U32 sodium, U32 bicarbonate )
 {
     dialysateDeliveryCmdSet.start            = TRUE;
     dialysateDeliveryCmdSet.dialRate         = qd;
     dialysateDeliveryCmdSet.ufRate           = quf;
-    dialysateDeliveryCmdSet.hdfRate          = qhdf;    
     dialysateDeliveryCmdSet.dialTemp         = dialTemp;
     dialysateDeliveryCmdSet.bypassDialyzer   = bypass;
     dialysateDeliveryCmdSet.acidConvFactor   = acidConvFactor;
@@ -464,31 +461,6 @@
 
 /*********************************************************************//**
  * @brief
- * The cmdChangeQhdf function sends a generate dialysate command to the DD
- * with a given new hemodiafiltration rate.
- * @details \b Inputs: none
- * @details \b Outputs: dialysateDeliveryCmdSet
- * @details \b Message \b Sent: Continue generate dialysate command w/ new Quf.
- * @param qhdf, hemodiafiltration flow rate (in mL/min).
- * @return none
- *************************************************************************/
-void cmdChangeQhdf( F32 qhdf )
-{
-    if ( TRUE == dialysateDeliveryCmdSet.start )
-    {
-        dialysateDeliveryCmdSet.hdfRate = qhdf;
-#ifndef TEST_UI_ONLY
-        sendMessage( MSG_ID_DD_GEN_DIALYSATE_REQUEST_DATA, COMM_BUFFER_OUT_CAN_TD_2_DD, (U08*)(&dialysateDeliveryCmdSet), sizeof( DIALYSATE_DELIVERY_REQ_PAYLOAD_T ) );
-#endif
-    }
-    else
-    {
-        // TODO - s/w fault?
-    }
-}
-
-/*********************************************************************//**
- * @brief
  * The cmdBypassDialyzer function sends a generate dialysate command to the DD
  * with a given flag indicating whether dialyzer should be bypassed.
  * @details \b Inputs: none