Index: firmware/App/Services/TDInterface.c
===================================================================
diff -u -rbd522c8ffdf75130571e5b6a79d1b1d6acd78b1c -r57bbf4b3e97f2c3e966eb1305aa30395ea61897d
--- firmware/App/Services/TDInterface.c	(.../TDInterface.c)	(revision bd522c8ffdf75130571e5b6a79d1b1d6acd78b1c)
+++ firmware/App/Services/TDInterface.c	(.../TDInterface.c)	(revision 57bbf4b3e97f2c3e966eb1305aa30395ea61897d)
@@ -104,6 +104,7 @@
 static OVERRIDE_U32_T tdSodium;                                            ///< TD Sodium concentrate
 static OVERRIDE_U32_T tdBicarbonate;                                       ///< TD Bicarbonate concentrate
 static OVERRIDE_F32_T tdSubstitutionFlowRate;                              ///< TD Subsitution flow rate
+static BOOL tdDrainCancel;                                                 ///< TD Drain Cancel request
 
 // ********** private function prototypes **********
 
@@ -123,6 +124,7 @@
     tdSubMode                           = 0U;
     tdDialyzerBypass                    = FALSE;
     tdOpModeDataFreshFlag               = FALSE;
+    tdDrainCancel                       = FALSE;
 
     // Initialize treatment parameters from TD
     tdDialysateFlowrate.data            = 0.0F;
@@ -338,6 +340,20 @@
 
 /*********************************************************************//**
  * @brief
+ * The setTDDrainCancelRequest function sets the latest TD drain cancel request
+ * enable.
+ * @details \b Inputs: none
+ * @details \b Outputs: tdDrainCancel
+ * @param Drain Cancel.
+ * @return none.
+ *************************************************************************/
+void setTDDrainCancelRequest( BOOL drainCancel )
+{
+    tdDrainCancel = drainCancel;
+}
+
+/*********************************************************************//**
+ * @brief
  * The getTDDialysateFlowrate function gets the latest TD dialysate flow
  * rate.
  * @details \b Inputs: tdDialysateFlowrate
@@ -387,6 +403,7 @@
 {
     return getF32OverrideValue( &tdSubstitutionFlowRate );
 }
+
 /*********************************************************************//**
  * @brief
  * The getTDDialyzerBypass function gets the latest TD dailyzer bypass valve
@@ -460,6 +477,18 @@
 
 /*********************************************************************//**
  * @brief
+ * The getTDDrainCancelRequest function gets the latest TD Drain cancel request
+ * @details \b Inputs: tdDrainCancel
+ * @details \b Outputs: none
+ * @return Latest Drain cancel request
+ *************************************************************************/
+BOOL getTDDrainCancelRequest( void )
+{
+    return tdDrainCancel;
+}
+
+/*********************************************************************//**
+ * @brief
  * The handlePreGenDialysateRequestMsg function handles a pre gen dailysate
  * delivery request from TD to perform required self test and priming process.
  * @details Inputs: none