I am using currently a ModbusRTU-MQTT Gateway (HD67933-4-B2) to access a AC climatisation Device from Toshiba. A Intesis AC-Interface Device is converting the proprietary Toshiba Bus from the AC to Modbus RTU.

It is not working, and the devices does not provide any kind of debugging. I am looking for a different hardware that provides a better way to debug.

My question is: What alternative Modbus-MQTT Gateway Hardware can be used, that provides a better way to debug everything.


  • 2
    maybe you should be talking to Toshiba tech support
    – jsotola
    Nov 30, 2023 at 22:05


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