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The Edge Nodes folder tags provide information on the connected Edge Nodes

Name	Data Type	Description
Last Node to Connect	String	The Sparkplug ID of the last node to connect
Last Node To Disconnect	String	The Sparkplug ID of the last node to disconnect
NodesOffline	Integer	The number of Sparkplug Edge Nodes offline. This is determined by whether the last lifecycle message was an NBIRTH or NDEATH
NodesOnline	Integer	The number of Sparkplug Edge Nodes online. This is determined by whether the last lifecycle message was an NBIRTH or NDEATH
NodeUnitCount	Integer	The total number of Sparkplug Edge Nodes as determined by the received NBIRTH messages
Offline Nodes	Dataset	A dataset containing the Sparkplug ID and timestamp for all offline Sparkplug edge nodes
Online Nodes	Dataset	A dataset containing the Sparkplug ID and timestamp for all online Sparkplug edge nodes

The Latches folder tags provide a tag path to any configured tag latches in the MQTT Engine configuration

Name	Data Type	Description
TagName as defined in the MQTT Engine configuration	Boolean	Writeable tag to 'reset' the tag latch

The MQTT Clients folder tags provide information on the connected MQTT Clients.

Name	Data Type	Description
Latency Check Period (ms)	Integer	Frequency in milliseconds that the message latency for each MQTT Client is checked if the Enable Latency Check is checked

For each configured MQTT Engine Set, the following tags are available for each identified MQTT Client:

Name	Data Type	Description
Connected Nodes	Integer	Number of currently connected Sparkplug Edge Nodes to this MQTT Client
Enable Latency Check	Integer	Writable tag to enabled message latency checking for each MQTT Client
Message Processing Latency (ms)	Integer	The amount of time to process the last Sparkplug message
Messages Per Second	Integer	The number of MQTT messages received by Engine per second
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
Online DateTime	DateTime	The last time at which the MQTT Client successfully connected to the MQTT Server
Server Latency (ms)	Integer	The amount of time that it takes for a test MQTT message to be sent and received back by MQTT Engine
Target Server URL	String	The URL of the target MQTT Server to connect to

For each identified MQTT Client, the following folders and tags are available:

Name	Name	Data Type	Description
Primary Host State/PrimaryHostName		Folder	Folder named as the Primary Host ID configured in MQTT Engine
	Payload	String	Status of the Primary Host. Options are {"online":true,"timestamp":1681780081657} or {"online":true,"timestamp":1681780081657} where the timestamp is the time of the last status change
	Retain	Boolean	Retain status of the LWT message for the Primary Host
Legacy Primary Host State/PrimaryHostName		Folder	Folder named as the Primary Host ID configured in MQTT Engine if Enable Legacy State messages is True under the Severs > Legacy State configuration
	Payload	String	Status of the Legacy Primary Host. Options are OFFLINE or ONLINE
	Retain	Boolean	Retain status of the LWT message for the Primary Host

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