Communication Protocols

This section covers platform connectivity and field-bus configuration.

MQTT connection lifecycle

Protocols

Protocol	Page	Typical Use
MQTT	MQTT Configuration	Connect the device to FastBee or another broker, subscribe to control topics, and report telemetry
Modbus RTU	Modbus RTU Configuration	Configure serial parameters, RS485 direction, slave IDs, and register polling
Modbus Guide	Modbus RTU Debugging and Control	Troubleshoot function codes, addresses, register maps, and read/write behavior

Verification Checklist

• Network is online before protocol connection is attempted.
• Broker address, port, credentials, client ID, and topic prefix are consistent with the platform.
• Modbus baud rate, parity, stop bits, slave address, function code, and register base match the field device manual.
• Device logs show reconnects, failures, and register errors clearly enough for field diagnosis.

Catalog

• Modbus RTU Configuration
• Modbus RTU Debugging and Control
• MQTT Configuration