Contents
Cirrus Link Resources
Cirrus Link Website
Contact Us (Sales/Support)
Forum
Cirrus Link Modules Docs for Ignition 7.9.x
Inductive Resources
Ignition User Manual
Knowledge Base Articles
Inductive University
Forum
Prerequisites
- Knowledge of Ignition and Module installation process: Cirrus Link Module Installation
- Installation of the following Cirrus Link MQTT modules selecting the version compatible with your Ignition installation :
- MQTT Distributor
- MQTT Engine
- MQTT Transmission
- MQTT Recorder
- Installed SQL database such as MySQL (Ver 14.14 Distrib 5.7.12)
Overview
Within MQTT Transmission, a record is a collection of tags under an Ignition folder which are treated as a single entity and published on demand. They are usually used for, but not restricted to, sending flow computer records such as events, alarms and history data.
Records are published via an MQTT client using a Sparkplug-like format such as spBv1.0/Group/NRECORD/Edge or spBv1.0/Group/DRECORD/Edge/Device with a JSON payload.
Records received at MQTT Engine are passed to MQTT Recorder which automatically generates database tables and populates the rows within the tables with records as they are received.
This tutorial shows how to configure the MQTT Transmission module to generate records and publish them as MQTT messages via MQTT Distributor to be passed through MQTT Engine and passed to MQTT Recorder and stored in an MySQL database.
The topology of this example shows MQTT Distributor, MQTT Engine, Record Store, and MQTT Transmission all running in the same Ignition instance. This is done for simplicity of the tutorial, but this isn't required or even intended to be a real use case. In a more realistic scenario MQTT Transmission and MQTT Engine would be located on separate machines.
Overview
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