diff --git a/aqhome/msg/ipc/m_ipc_tag16.c b/aqhome/msg/ipc/m_ipc_tag16.c
index d5726f10..eb51f494 100644
--- a/aqhome/msg/ipc/m_ipc_tag16.c
+++ b/aqhome/msg/ipc/m_ipc_tag16.c
@@ -26,28 +26,29 @@
  * ------------------------------------------------------------------------------------------------
  */
 
-#define AQH_IPCDATA_VALUE_TAGS_ID              0x01
-#define AQH_IPCDATA_VALUE_TAGS_DRIVER          0x02
-#define AQH_IPCDATA_VALUE_TAGS_NAMEFORDRIVER   0x03
-#define AQH_IPCDATA_VALUE_TAGS_NAMEFORSYSTEM   0x04
-#define AQH_IPCDATA_VALUE_TAGS_TYPE            0x05
-#define AQH_IPCDATA_VALUE_TAGS_UNITS           0x06
-#define AQH_IPCDATA_VALUE_TAGS_TIMEOFCREATION  0x07
-#define AQH_IPCDATA_VALUE_TAGS_DEVFORDRIVER    0x08
-#define AQH_IPCDATA_VALUE_TAGS_DEVFORSYSTEM    0x09
-#define AQH_IPCDATA_VALUE_TAGS_MODALITY        0x0a
+#define AQH_IPCDATA_VALUE_TAGS_ID               0x01
+#define AQH_IPCDATA_VALUE_TAGS_DRIVER           0x02
+#define AQH_IPCDATA_VALUE_TAGS_NAMEFORDRIVER    0x03
+#define AQH_IPCDATA_VALUE_TAGS_NAMEFORSYSTEM    0x04
+#define AQH_IPCDATA_VALUE_TAGS_TYPE             0x05
+#define AQH_IPCDATA_VALUE_TAGS_UNITS            0x06
+#define AQH_IPCDATA_VALUE_TAGS_TIMEOFCREATION   0x07
+#define AQH_IPCDATA_VALUE_TAGS_DEVFORDRIVER     0x08
+#define AQH_IPCDATA_VALUE_TAGS_DEVFORSYSTEM     0x09
+#define AQH_IPCDATA_VALUE_TAGS_MODALITY         0x0a
+#define AQH_IPCDATA_VALUE_TAGS_TIMEOFLASTCHANGE 0x0b
 
-#define AQH_IPCDATA_DEVICE_TAGS_ID             0x01
-#define AQH_IPCDATA_DEVICE_TAGS_DRIVER         0x02
-#define AQH_IPCDATA_DEVICE_TAGS_ROOMNAME       0x03
-#define AQH_IPCDATA_DEVICE_TAGS_NAMEFORDRIVER  0x04
-#define AQH_IPCDATA_DEVICE_TAGS_NAMEFORSYSTEM  0x05
-#define AQH_IPCDATA_DEVICE_TAGS_NAMEFORGUI     0x06
-#define AQH_IPCDATA_DEVICE_TAGS_LOCATION       0x07
-#define AQH_IPCDATA_DEVICE_TAGS_DESCRIPTION    0x08
-#define AQH_IPCDATA_DEVICE_TAGS_DEVTYPE        0x09
-#define AQH_IPCDATA_DEVICE_TAGS_MANUFACTURER   0x0a
-#define AQH_IPCDATA_DEVICE_TAGS_TIMEOFCREATION 0x0b
+#define AQH_IPCDATA_DEVICE_TAGS_ID              0x01
+#define AQH_IPCDATA_DEVICE_TAGS_DRIVER          0x02
+#define AQH_IPCDATA_DEVICE_TAGS_ROOMNAME        0x03
+#define AQH_IPCDATA_DEVICE_TAGS_NAMEFORDRIVER   0x04
+#define AQH_IPCDATA_DEVICE_TAGS_NAMEFORSYSTEM   0x05
+#define AQH_IPCDATA_DEVICE_TAGS_NAMEFORGUI      0x06
+#define AQH_IPCDATA_DEVICE_TAGS_LOCATION        0x07
+#define AQH_IPCDATA_DEVICE_TAGS_DESCRIPTION     0x08
+#define AQH_IPCDATA_DEVICE_TAGS_DEVTYPE         0x09
+#define AQH_IPCDATA_DEVICE_TAGS_MANUFACTURER    0x0a
+#define AQH_IPCDATA_DEVICE_TAGS_TIMEOFCREATION  0x0b
 
 #define AQH_IPCDATA_NODE_TAGS_BUSADDR             0x01 /* uint8_t */
 #define AQH_IPCDATA_NODE_TAGS_UID                 0x02 /* uint32_t */
@@ -312,7 +313,8 @@ void _writeValueFieldsAsTagsToBuffer(const AQH_VALUE *value, GWEN_BUFFER *buf)
     GWEN_Tag16_WriteStringTagToBuffer(AQH_IPCDATA_VALUE_TAGS_DEVFORSYSTEM, s, buf);
 
   GWEN_Tag16_WriteUint32TagToBuffer(AQH_IPCDATA_VALUE_TAGS_MODALITY, AQH_Value_GetModality(value), buf);
-  
+
+  GWEN_Tag16_WriteUint64TagToBuffer(AQH_IPCDATA_VALUE_TAGS_TIMEOFLASTCHANGE, AQH_Value_GetTimestampLastChange(value), buf);
 }
 
 
@@ -467,6 +469,9 @@ AQH_VALUE *_readValueFromTag(const uint8_t *ptr, uint32_t len)
       case AQH_IPCDATA_VALUE_TAGS_MODALITY:
         AQH_Value_SetModality(value, GWEN_Tag16_GetTagDataAsUint32(tag, 0));
         break;
+      case AQH_IPCDATA_VALUE_TAGS_TIMEOFLASTCHANGE:
+        AQH_Value_SetTimestampLastChange(value, GWEN_Tag16_GetTagDataAsUint64(tag, 0));
+        break;
       default:
         DBG_INFO(AQH_LOGDOMAIN, "Unhandled tag typ %d (%02x)", tagType, tagType);
         break;