Axis C1511 User Manual page 31

AXIS C15 Series
The web interface
Payload: Enter the content for the default message.
Retain: Select to keep the state of client on this Topic
QoS: Change the QoS layer for the packet flow.
MQTT publication
Use default topic prefix: Select to use the default topic prefix, that is defined in the device topic prefix in the MQTT client tab.
Include topic name: Select to include the topic that describes the condition in the MQTT topic.
Include topic namespaces: Select to include ONVIF topic namespaces in the MQTT topic.
Include serial number: Select to include the device's serial number in the MQTT payload.
Add condition: Click to add a condition.
Retain: Defines which MQTT messages are sent as retained.
• None: Send all messages as non-retained.
• Property: Send only stateful messages as retained.
• All: Send both stateful and stateless messages as retained.
QoS: Select the desired level for the MQTT publication.
MQTT subscriptions
Add subscription: Click to add a new MQTT subscription.
Subscription filter: Enter the MQTT topic that you want to subscribe to.
Use device topic prefix: Add the subscription filter as prefix to the MQTT topic.
Subscription type:
• Stateless: Select to convert MQTT messages into a stateless message.
• Stateful: Select to convert MQTT messages into a condition. The payload is used as the state.
QoS: Select the desired level for the MQTT subscription.
MQTT overlays
Note
Connect to an MQTT broker before you add MQTT overlay modifiers.
Add overlay modifier: Click to add a new overlay modifier.
Topic filter: Add the MQTT topic that contains the data you want to show in the overlay.
Data field: Specify the key for the message payload that you want to show in the overlay, assuming the message is in JSON format.
Modifier: Use the resulting modifier when you create the overlay.
• Modifiers that start with #XMP show all of the data received from the topic.
• Modifiers that start with #XMD show the data specified in the data field.
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