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MQTT Transmission automatically creates a known set of folders containing tags for Transmission Control and Transmission Info.

The tables below describe the tags.

Table of Contents

Transmission Control

Name	Data Type	Description
Discover Edge Nodes	Boolean	A writeable tag to request the BIRTH sequence for any new Edge Nodes to be published and the info tags created in the Transmission Info folder.
Discover Edge Nodes Required	Boolean	A tag indicating that new Edge Nodes have been added and identified by Transmission
Last Refresh	DateTime	The time at which the last refresh request was completed
Refresh	Boolean	A writeable tag to request a MQTT Transmission refresh. This will force all Edge Nodes to disconnect and reconnect resulting in the sending of NDEATH, NBIRTH and DBIRTH messages

Name	Data Type	Description
Refresh Required	Boolean	A tag indicating that new tags have been identified by Transmission and a refresh is required. The refresh can be accomplished with a full refresh of Transmission or by refreshing the individual Edge Node affected

For each Transmitter, a tag tree will be created with the tag path of TransmitterName > Tag Path > GroupID > EdgeNodeID

Name	Data Type	Description
Largest Mesg Xmit (bytes)	Long	The largest message size in bytes sent by the Edge Node since the last time the metrics were reset via the Edge Node Reset Metrics tag
Largest Mesg Xmit Timestamp	DateTime	The time at which the largest message was sent by the Edge Node since the last time the metrics were reset via the Edge Node Reset Metrics tag
Last Refresh	DateTime	The time at which the last Edge Node refresh request was completed
Refresh Edge Node	Boolean	A writeable tag to request a refresh of the Edge Node. This will force the Edge Node to disconnect and reconnect resulting in the sending of NDEATH, NBIRTH and DBIRTH messages
Refresh Required	Boolean	A tag indicating the new tags have been identified by Transmission for this Edge Node and a refresh is required.
Reset Metrics	Boolean	A writable tag to reset the metrics for this Edge Node
Total Bytes Xmit (bytes)	Long	The number of bytes sent by the Edge Node since the last time the metrics were reset via the Edge Node Reset Metrics tag
Total Mesg Xmit	Long	The number of messages sent by the Edge Node since the last time the metrics were reset via the Edge Node Reset Metrics tag

Name	Data Type	Description
Command Latency (ms)	Long	The amount of time for a test MQTT command message to be sent and received back by the MQTT Client
Enable Latency Check	Boolean	Writeable tag to enable command latency checking for each MQTT Client
MQTT Client ID	String	The Client ID for the MQTT Client
Offline DateTime	DateTime	The last time at which the MQTT Client successfully disconnected from the MQTT Server
Online	Boolean	A read-only tag showing the connection status of the MQTT Client
OnlineDateTime	DateTime	The last time at which the MQTT Client successfully connected to the MQTT Server
Primary Host ID	String	The Primary Host ID configured for this MQTT Client
Target Server URL	String	The URL of the target MQTT Server to connect to