Yes. That tag is writable, so you can send a SparkPlug payload to that topic and change the scanner interval.
Cool. I looked over the Tahu examples and gave it a try by sending a NCMD with the metric to write. Not clear yet what’s happening, but I somehow triggered (from the MQTT logs).
ERROR|2022-03-02 07:35:13,972|MqttHub.java|445|messagearrived(), exception reported: null
As for “Device Control/Rebirth”, it sounds like this is actually standard (not just an example, which the Sparkplug specs describe it as). The reason I wouldn’t expect this to work for the Groov Rio is that the NBIRTH payload does not include a “Device Control/Rebirth” metric. The Sparkplug specification 7.7 states:
The DCMD topic provides the Topic Namespace used to publish metrics to any connected device. This means sending a new metric value to an associated metric included in the DBIRTH metric list
Since I don’t see “Device Control/Rebirth” in the DBIRTH payload, I wouldn’t expect it to be supported. This investigation led to a couple of other issues with my MQTT broker, so this isn’t fully explained yet. Thanks!