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NameData TypeDescription
Delete UNS TagsBooleanWriteable tag to delete all UNS namespace tags associated with this Sparkplug Edge Node. Tag is set to read-only by default
Next ServerBooleanWriteable tag to request the Edge Node to walk to the next MQTT server
RebirthBoolean

Writeable tag to request the Edge Node to 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.

Node Info

The tags below are general information tags with respect to Sparkplug Edge Nodes. These are created, managed and updated by MQTT Engine based on messages arriving from each given Edge Node.

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NameData TypeDescription
Delete UNS TagsBooleanWriteable tag to delete all UNS namespace tags associated with this Sparkplug Device. Tag is set to read-only by default
RebirthBoolean

Writeable tag to request the Edge Node to resend its cached DBIRTH message for the specific Device 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.

Note: Block Device Commands must be disabled in order the DCMD to be published by Engine

Device Info

The tags below are general information tags with respect to Sparkplug Devices. These are created, managed and updated by MQTT Engine based on messages arriving from each given Device.

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NameData TypeDescription
Enable Tag TrackingBooleanWritable tag to control whether or not to update Tags Per Seconds (added 4.0.17)
Queued MessagesDatasetA dataset showing the current message count for each message queue
Queued Messages TotalIntegerThe count of all current queued messages
Rebirth (Last) CauseStringThe reason for the last rebirth request to be issued by MQTT Engine (added 4.0.22)
Rebirth (Last) DateTimeDateTimeThe time at which the last rebirth was issued by MQTT Engine (added 4.0.22)
Rebirth (Last) NodeStringThe Sparkplug EdgeNode ID for which the last rebirth was issued by MQTT Engine (added 4.0.22) 
Rebirth CountIntegerThe count of rebirth requests issued by MQTT Engine (added 4.0.22)
Redundancy RoleStringThe redundancy configuration of the Ignition system that MQTT engine is installed on. Options are Independent, Master and Backup
Redundancy StateStringThe redundancy status of the Ignition system that MQTT engine is installed on. Options are Active or Cold
Reordered Mesg CountIntegerThe number of messages that have been reordered by MQTT Engine (added 4.0.22)
Reordered Mesg ResetBooleanWritable tag to reset the Reordered Mesg Count metric (added 4.0.22)
System-Wide Reset InfoBooleanWriteable tag to 'reset' all Engine metrics
Tag CountLongThe sum of tags included in the last NBIRTH and DBIRTH messages received from each Edge Node. When an LWT is received form the Edge Node, the tag count for that Edge Node is set to 0 and repopulated on connect when the next BIRTH messages are received (added 4.0.17)
Tags Per SecondLongThe number of tags changes received per second with the value updated every two seconds (added 4.0.17)
Total Bytes Recvd (bytes)IntegerThe number of bytes received by Engine since the last time the info metrics were reset via the System-Wide Reset Info tag
Total Bytes Xmit (bytes)IntegerThe number of bytes sent from Engine since the last time the info metrics were reset via the System-Wide Reset Info tag
Total Data Mesg CountIntegerThe number of messages received by Engine since the last time the info metrics were reset via the System-Wide Reset Info tag
VersionStringThe version MQTT Engine currently installed

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