SmartSwarm 300 Series
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75
10.2 EVENTS (WHEN)
On any row in the Rules and Topics table, click the
Event
field to see the drop-down list of available events:
Note:
Only one instance of each event type should be added to a register. Adding multiple events of the same type
will have no effect, as only the first instance of the event will take effect.
The following table summarizes the available event types:
Event
Description
None
The default selection. Nothing will be published.
Read
Trigger when the register is observed on the bus. Use with extreme caution as this can
result in a substantial amount of MQTT data being published.
Change
Trigger when the enriched register value changes from the last observed value.
High Threshold
Trigger when the enriched register value goes above a threshold.
Low Threshold
Trigger when the enriched register value goes below a threshold.
Delta
Trigger when the enriched register value changes by a specified amount from the last
published value.
High Rate
Trigger when the rate-of-change of the enriched register value increases by more than a
specified amount in a specified period.
Low Rate
Trigger when the rate-of-change of the enriched register value decreases by more than a
specified amount in a specified period.
Scheduled
Trigger periodically, on a user-defined interval.
Global Read
As for “Read”, but applies to ANY register of this type.
Global Change
As for “Change”, but applies to ANY register of this type.
Table 25. Event Types
The following table summarizes how each event type may be used with each register type:
