Index: MessagePayloads.h
===================================================================
diff -u -rf0a3820c00047b880091e48c085b3c97c2e3b98f -r22da40d9c34d259afdc36e01de40bc6947b32277
--- MessagePayloads.h	(.../MessagePayloads.h)	(revision f0a3820c00047b880091e48c085b3c97c2e3b98f)
+++ MessagePayloads.h	(.../MessagePayloads.h)	(revision 22da40d9c34d259afdc36e01de40bc6947b32277)
@@ -53,6 +53,10 @@
 typedef struct
 {
     BOOL start;                                         ///< Flag indicating whether to start pre-gen dialysate(TRUE) or stop (FALSE).
+    F32  dialRate;                                      ///< Set dialysate rate (mL/min).
+    F32  dialTemp;                                      ///< Set dialysate temperature (deg C).
+    U32  acidType;                                      ///< Type of acid being used to make dialysate.
+    U32  bicarbType;                                    ///< Type of bicarb being used to make dialysate.
 } PRE_GEN_DIALYSATE_REQ_PAYLOAD_T;
 
 /// Enumeration of operation modes.  These are in order of priority (highest to lowest).