RS transmission buffer overflow
Fronius · Solar Energy
What does 7 mean?
This error occurs when the transmit buffer for the RS communication interface (likely RS-232/485) receives more data than it can process or hold. This can lead to data loss during transmission and disruption of serial communication.
Common Causes
- High data transmission rate exceeding buffer capacity
- Slow processing of data from the transmit buffer
- Incorrect communication settings (e.g., baud rate mismatch)
Repair Steps & Checklist
Click steps to track your progress.
- 1
Verify RS communication parameters (baud rate, data bits, parity, stop bits) on the Fronius device and the connected external system are identical.
- 2
Inspect the RS communication cabling for damage, proper termination, and secure connections between the Fronius device and the external system.
- 3
Check the external device's configuration and data transmission rate to ensure it is not overwhelming the Fronius communication buffer.
- 4
Cycle power to both the Fronius device and the connected external system to reset communication interfaces.