MQTT Engine can request a Node or Device level REBIRTH request using the Rebirth tag under the Node Control or Device Control folders. See the ME: Tags documentation for details.
When MQTT Transmission receives the Rebirth command it will resend its cached NBIRTH and DBIRTH messages without disconnecting or sending DEATH messages first. This means a that the new BIRTH will only contain the same metrics/tags that were in the original BIRTH message.
| Block Device Commands must be disabled in order the DCMD to be published by Engine |
Setting the Refresh tag at MQTt Transmission will force all Edge Nodes to disconnect and reconnect resulting in the sending of NDEATH, NBIRTH and DBIRTH messages. A refresh does a full scan of the tag tree and will include any new tags that may have been added since the last BIRTH.
| A refresh can be performed at the Transmission level for all Edge Nodes or on an individual Edge Node. See the MT: Tags documentation for details |