machine-communication-presentation

PT 5000,50
ST

1st Byte - Sync Flag (Value: 0xff)
2nd Byte - Sync Flag / Protocol version
3rd Byte - Message Length (N) - Low Byte
4th Byte - Message Length (N) - High Byte
5th Byte - Checksum over message length
6th Byte - Topic ID - Low Byte
7th Byte - Topic ID - High Byte
N Bytes  - Serialized Message Data
Byte N+8 - Checksum over Topic ID and Message Data

--> {"jsonrpc": "2.0", "method": "add", "params": [42, 23], "id": 3}
<-- {"jsonrpc": "2.0", "result": 65, "id": 3}