By Salamandra , 3 September, 2025

Help Needed: RS485 Communication with Hexing Meter

Forums
General discussion

Hi!

I'm working on a project with some Hexing meters. I was able to connect to the meter via the optical port using HDLCWithModeE at 300 baud, 7E1, with GURUX DLMS Director and Python, and publish the data via MQTT. However, I don’t know how to establish a connection through RS485. I’ve tried multiple baud rates, servers, and users using the baud rate scan in GURUX DLMS Director, but without success.

The final goal is to have an ESP32 connect to the meter via RS485 and publish the acquired data to my MQTT server.