As someone who has been diving into home automation, connecting devices via MODBUS has been an exciting challenge. I recently set up a MODBUS/IP to MODBUS-RTU gateway for integrating my SDM-230 power meter into my home control system. The journey was filled with both triumphs and hurdles, and I wanted to share my experience in case it helps others facing similar issues.
Initially, I configured my configuration.yaml with the necessary settings for the MODBUS gateway. The gateway itself worked flawlessly when tested with MODBUS POLL, delivering the expected data from the meter. However, when integrating with Home Assistant (HA), I encountered an issue where HA established a TCP connection but failed to send any polling requests. This was puzzling, especially since the gateway logs confirmed the connection was established.
After some research and troubleshooting, I discovered that adjusting the scan_interval and ensuring the message_wait_milliseconds were optimized made a significant difference. I also realized the importance of verifying the MODBUS slave ID and register addresses to ensure they matched the meter’s specifications. These tweaks finally allowed HA to start polling the meter reliably.
Reflecting on this experience, I learned the value of meticulous configuration and the importance of reviewing documentation thoroughly. It’s also clear that community support plays a crucial role in overcoming such challenges. If anyone else is struggling with MODBUS integration, I’d be happy to share more details or help troubleshoot!
Happy automating! 