For the MQTT client driver acting as a SCADA/IIoT host. Enable if you want the driver to use the legacy pre- 3.0.0 STATE topic and message format.
Current format
State topic example: "spBv1.0/STATE/SCADAHostID"
Message payload (JSON format): {"online" : true or false, "timestamp" : ts}
Legacy format
State topic example: "STATE/SCADAHostID"
Message payload: OFFLINE or ONLINE
Section: System
Default: SparkplugLegacySTATE = 0
*No restart required (Settings.Dynamic property)
