MQTT

MQTT (Message Queuing Telemetry Transport) is a lightweight messaging protocol designed for devices with limited resources and networks with low bandwidth or high latency. MQTT uses a publish-subscribe model, which helps reduce network traffic and simplifies communication between devices.

MQTT overview

• Publish-subscribe model: Devices (clients) publish messages to topics. Other devices subscribe to those topics to receive messages.

• Broker: A central server that manages distribution between publishers and subscribers.

• Quality of Service (QoS): MQTT supports three levels of message delivery:

  • QoS 0: At most once (no confirmation).

    Note: Your device uses QoS 0.

  • QoS 1: At least once (confirmation required).

  • QoS 2: Exactly once (guaranteed delivery).

Your meter as an MQTT client

As an MQTT client, your meter can:

• Publish data: Publish data (such as voltage, current, or any other numeric value) to the broker (QoS 0).

• Communicate securely: TLS encryption and optional authentication help the meter secure data exchange with the MQTT broker.

For more information on the MQTT Export Module, including a detailed description of the payload format, see ION Reference Help.