MQTT Sparkplug B Driver Guide - Source (Status Attributes that are Specific to the MQTT Sparkplug B Driver)

Source

Associated with: MQTT Sparkplug™ B EoN Nodes, Devices, and Points

The Source attribute is common to many Status displays. The attribute indicates the location at which the item resides. The information shown varies, depending on the item.

The Source attribute displays the value Undefined if the item’s configuration is incomplete, in so far as the device with which the item is associated has not yet been specified.

With an item for which the Source content is only partially configured, the unpopulated part of that status attribute is typically indicated by two single straight quotation marks next to each other. Additionally, the item's Current Quality will provide further information about the issue.

With an MQTT Sparkplug B EoN Node, information is displayed in this format:

Broker:'<Broker Host Address>:<Port>' Group:'<Group Id>' EoN Node:'<EoN Node Id>'

Broker:'123.0.0.1:8883' Group:'A5' EoN Node:'Nd55'

(For an MQTT Sparkplug B Eon Node that is configured to use EoN Node Id 'Nd55'. The node is in the MQTT Sparkplug B Group that is configured to use Group Id 'A5'. The Group is associated with the MQTT Sparkplug B Broker that has the Broker Host Address 123.0.0.1 and listens on Port 8883.)

With an MQTT Sparkplug B EoN Device, information is displayed in this format:

Broker:'<Broker Host Address>:<Port>' Group:'<Group Id>' EoN Node:'<EoN Node Id>' Device:'<Device Id>'

Broker:'123.0.0.1:8883' Group:'A5' EoN Node:'Nd55' Device:'Dv23'

(For an MQTT Sparkplug B Device that is configured to use Device Id 'Dv23'. For details about the Eon Node to which the device is connected, along with the Group and Broker with which the EoN Node is associated, see the example above.)

With an MQTT Sparkplug B Point:

Information is displayed in this format if the point is on an EoN node:

Broker:'<Broker Host Address>:<Port>' Group:'<Group Id>' EoN Node:'<EoN Node Id>' <Point Type>: '<Metric Name>'
Information is displayed in this format if the point is on a Sparkplug B device that is connected to an EoN node:

Broker:'<Broker Host Address>:<Port>' Group:'<Group Id>' EoN Node:'<EoN Node Id>' Device:'<Device Id>' <Point Type>: '<Metric Name>'
If the point is a digital point, the above EoN node or Sparkplug B device content is appended with:

Digital: '<Metric Name>', Bits <Number of Bits>

Broker:'123.0.0.1:8883' Group:'A5' EoN Node:'Nd55' Device:'Dv23' Digital: 'Switch3', Bits 2

(For a 2-bit MQTT Sparkplug B Digital Point that is configured to use the Metric Name 'Switch3'. For details about the Sparkplug B Device, and Eon Node to which the device is connected, along with the Group and Broker with which the EoN Node is associated, see the example above.)