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Various fixes and updates for Sparkplug 4.0.0 #537

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Merged
merged 7 commits into from
Jan 3, 2025
Merged

Various fixes and updates for Sparkplug 4.0.0 #537

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9fe34c7
[#447] Modified the spec to break out rebirth requests into their own…
wes-johnson Dec 27, 2024
7588d6f
[#535] Upticked max values for seq and bdSeq numbers from 255 to 1844…
wes-johnson Dec 27, 2024
da8f568
[#104] Added engUnit property to the MetaData fields
wes-johnson Dec 27, 2024
f716c30
[#124] Modified the spec to allow for omission of Metric level timest…
wes-johnson Dec 28, 2024
1f0cbf3
[#232] Modified the spec to use nanosecond timestamps instead of mill…
wes-johnson Dec 29, 2024
ef29918
[#306] Added 'source' field to the payload for REBIRTH and CMD messages
wes-johnson Dec 29, 2024
dd22abf
[#536] Added bd_seq optional field to the payload definition and modi…
wes-johnson Dec 31, 2024
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5 changes: 3 additions & 2 deletions specification/src/main/asciidoc/chapters/Sparkplug_1_Introduction.adoc
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Expand Up @@ -343,8 +343,9 @@ context of the Edge Node ID under which it exists.
Identifies a single 'tag change event' in the Sparkplug Payload. It represents an event that
occurred at the Edge Node or Device such as a value or quality of a data point changing. For
example, it could represent the value of an analog or boolean changing at a Sparkplug Device. A
Sparkplug Metric typically includes a name, value, and timestamp. Sparkplug Metrics are also used in
NCMD and DCMD messages to send messages to Edge Nodes and Devices to change values at the Edge.
Sparkplug Metric typically includes a name, value, quality, and timestamp. Sparkplug Metrics are
also used in NCMD and DCMD messages to send messages to Edge Nodes and Devices to change values at
the Edge.

[[introduction_datatypes]]
===== Data Types
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2 changes: 1 addition & 1 deletion specification/src/main/asciidoc/chapters/Sparkplug_2_Principles.adoc
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Expand Up @@ -86,7 +86,7 @@ timer.
=== Birth and Death Certificates

Birth and Death Certificates are used by both Edge Nodes and Host Applications. Death Certificates
for both are always registered in the MQTT CONNECT packet as the MQTT Will Message. By using the
for both, are always registered in the MQTT CONNECT packet as the MQTT Will Message. By using the
MQTT Will message, the Death Certificates will be delivered to subscribers even if the MQTT client
connection is lost ungracefully. For Edge Nodes, the Death Certificate uses the NDEATH Sparkplug
verb in the topic. For Host Applications, the spBv1.0/STATE/sparkplug_host_id topic is used. More
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