Duet Ethernet and RS-485



  • Hello all!

    We are revising our electronics and I would like to use an OMRON PID in conjunction with the Duet3D to control the temperature of an extruder. The PID supports communication via a proprietary protocol & RS-485. I am curious if the Duet has the ability to send bits via the GPIO pins on the expansion header? If so, can the bits be configured via gcode? It would be great if I could poll the PID for temperature or set the temperature from the Duet.

    Unfortunately I can't use the Duet to directly control the temperature as the noise coming from the thermocouple was causing temperature spikes which I was never able to fully diagnose / remedy. :C

    Link to the communication protocol manual: https://assets.omron.eu/downloads/manual/en/v1/h175_e5_c_communications_manual_en.pdf

    Thanks!

    -kevin



  • Have you considered changing to a PT100 based setup?


  • administrators

    @kzamani said in Duet Ethernet and RS-485:

    Unfortunately I can't use the Duet to directly control the temperature as the noise coming from the thermocouple was causing temperature spikes which I was never able to fully diagnose / remedy. :C

    Which version of the thermocouple board were you using? The newer MAX31856-based board is much less noise-sensitive than the older MAX31855-based one.


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