Index: firmware/App/Services/Messaging.c
===================================================================
diff -u -r6408d79e3a9a543e90b2fa7ab823be348befd391 -r9ff57b5ab7490ee5bbc2c51b25f738ee6c569ec1
--- firmware/App/Services/Messaging.c	(.../Messaging.c)	(revision 6408d79e3a9a543e90b2fa7ab823be348befd391)
+++ firmware/App/Services/Messaging.c	(.../Messaging.c)	(revision 9ff57b5ab7490ee5bbc2c51b25f738ee6c569ec1)
@@ -24,6 +24,7 @@
 #include "ConcentratePumps.h"
 #include "DialysatePumps.h"
 #include "Heaters.h"
+#include "FpgaDD.h"
 #include "Level.h"
 #include "Messaging.h"
 #include "MessagePayloads.h"
@@ -228,7 +229,7 @@
     &testHeaterPWMPeriodOverride,
     &testDDPreGenDialysateDataPublishIntervalOverride,
     &testDDPostGenDialysateDataPublishIntervalOverride,
-    &testDDStartPreGenDialysateOverride,                                              //65
+    &testDDStartPreGenDialysateOverride,                                               //65
     &handlePreGenDialysateRequestMsg,
     &testDDStopPreGenDialysateOverride,
     &testDDStopGenDialysateOverride,
@@ -249,6 +250,9 @@
 /// List of message IDs that are requested not to be transmitted.
 //static BLOCKED_MSGS_DATA_T blockedMessagesForXmit = { 0, 0, 0, 0, 0, 0, 0, 0 };
 
+/// UI version information
+static UI_VERSIONS_T uiVersionRecord = { 0, 0, 0, 0, 0 };
+
 // ********** private function prototypes **********
 
 static BOOL sendTestAckResponseMsg( MSG_ID_T msgID, BOOL ack );
@@ -642,7 +646,43 @@
     return status;
 }
 
+/*********************************************************************//**
+ * @brief
+ * The handleVersionRequestMessage function handles a UI request for DD
+ * version information.
+ * @details \b Message \b Sent: MSG_ID_DD_VERSION_REPONSE
+ * @details \b Inputs: none
+ * @details \b Outputs: UI version info.
+ * @param message Pointer to the UI version request message which contains
+ * the UI version information as well.
+ * @return TRUE if request handled successfully, FALSE if not
+ *************************************************************************/
+BOOL handleVersionRequestMessage( MESSAGE_T *message )
+{
+    BOOL result = FALSE;
 
+    if ( message->hdr.payloadLen == sizeof( UI_VERSIONS_T ) )
+    {
+        DD_VERSIONS_T ddVersionRecord;
+
+        // Record UI version information
+        memcpy( (U08*)(&uiVersionRecord), &message->payload, sizeof( UI_VERSIONS_T ) );
+
+        // Build TD version record
+        ddVersionRecord.major            = DD_VERSION_MAJOR;
+        ddVersionRecord.minor            = DD_VERSION_MINOR;
+        ddVersionRecord.micro            = DD_VERSION_MICRO;
+        ddVersionRecord.build            = DD_VERSION_BUILD;
+        getFPGAVersions( &ddVersionRecord.fpgaId, &ddVersionRecord.fpgaMajor, &ddVersionRecord.fpgaMinor, &ddVersionRecord.fpgaLab );
+        ddVersionRecord.compatibilityRev = SW_COMPATIBILITY_REV;
+
+        // Send TD version information
+        result = sendMessage( MSG_ID_DD_VERSION_REPONSE, COMM_BUFFER_OUT_CAN_DD_BROADCAST, (U08*)&ddVersionRecord, sizeof( DD_VERSIONS_T ) );
+    }
+
+    return result;
+}
+
 /*************************************************************************
  *                       TEST SUPPORT FUNCTIONS
  *************************************************************************/