Smart Meter Communication

What does 702 mean?

This status code indicates a communication error with the Smart Meter connected to the Fronius Primo GEN24 208-240 inverter. This typically results from loose or incorrect wiring, improper Smart Meter configuration (e.g., Modbus address), or a defective Smart Meter itself, preventing accurate energy flow measurement.

• Loose, incorrect, or damaged communication wiring (e.g., RS485) between the inverter and the Smart Meter.
• Incorrect Smart Meter configuration, such as an incorrect Modbus address or other communication settings within the inverter parameters.
• The Smart Meter device itself is defective and unable to communicate.

Click steps to track your progress.

1. 1

   Check the communication wiring (e.g., A/B lines for RS485) between the inverter and the Smart Meter for proper connection, polarity, and continuity.

2. 2

   Verify the Smart Meter's Modbus address and other communication settings (e.g., baud rate) in the inverter's user interface, ensuring they match the Smart Meter's configuration.

3. 3

   De-energize both the Smart Meter and the inverter, wait for 5 minutes, then re-energize them in sequence (Smart Meter first, then inverter) to reset communication.

4. 4

   If the message persists, the Smart Meter may require replacement.