Data Logger MQTT API

Campbell Scientific data loggers support MQTT for automated data collection and remote device control. A substantial set of custom topics and message structures has been developed on top of the standard MQTT protocol. The Data Logger MQTT Guide will be better understood with familiarity with MQTT protocols and experience programming Campbell Scientific data loggers.

• Topic Structure
• MQTT Settings
• Command and Control
• Onboarding
• Recipes
• JSON Data Formats
• State
• Status
• Metadata
• CRBasic MQTT Integration
• Binary Configuration File

Warning

This documentation is provided for informational and guidance purposes only. The MQTT API, associated behaviors, and implementation details described on these pages are subject to change without notice as the software, firmware, and supporting systems evolve. While reasonable efforts are made to keep the information accurate and up to date, this documentation may not reflect the most current behavior of the dataloggers or services at any given time. This content is not a legal document, does not constitute a contractual commitment, and should not be relied upon as the sole source of truth for production, compliance, or safety-critical decisions. Users are responsible for validating functionality against the specific firmware version and environment in which the MQTT API is used.