Climaveneta W3000 Modbus Patched [portable] -

RS485 is sensitive to + and - wire inversion.

Connect a shielded, twisted-pair cable (e.g., Belden 9841) from the W3000 to your master controller. climaveneta w3000 modbus patched

Update your polling interval. Avoid polling the W3000 faster than once every 2 to 5 seconds to prevent overloading the controller's processor. RS485 is sensitive to + and - wire inversion