Update README.md

README.md

@@ -64,8 +64,9 @@ LocaPack is available as a Node-RED Palette, ie a collection of nodes to produce
 
 ### JSON messages
 
-LocaPack messages are also available in JSON. Example of a Universal GNSS localisation packet:
+LocaPack messages are also available in JSON. 
 
+Example of a Universal GNSS localisation packet:
 ```json
 {
   "header": {
@@ -92,6 +93,37 @@ LocaPack messages are also available in JSON. Example of a Universal GNSS locali
 }
 ```
 
+Example of a Locally Referenced localisation packet:
+```json
+{
+    "LocaPack": {
+        "header": {
+            "protocol_version": 1,
+            "device_id_size": 2,
+            "packet_type": 2,
+            "movement_id_presence_flag": false,
+            "timestamp_presence_flag": true
+        },
+        "sequence_number": 163,
+        "timestamp": 1630289,
+        "device_id": 124,
+        "payload": [224,0,0,128,63,0,0,0,64,0,0,64,64,0,0,128,64,136,119,102,85,68,51,34,17],
+        "locallyReferencedPacket": {
+            "header": {
+                "z_presence_flag": true,
+                "dop_presence_flag": true,
+                "frameofref_id_presence_flag": true
+            },
+            "x": 1,
+            "y": 2,
+            "z": 3,
+            "dop": 4,
+            "frameofref_id": 9833440827789222000
+        }
+    }
+}
+```
+
 ## License
 
 Locapack is distributed under the GPLv3 license. Please refer to the `LICENSE` file.