Remap Heater Channels for Hotends



  • Hello!
    I'm currently building a new printer with a Duet2 Wifi and a Duex5. I'm planning on using up to four hotends.

    My wire layout would be the cleanest, if I only plug my hotend heater cartriges in the Duex. The default is extruder 0 and 1 on the Duet and exturder 2 and 3 on the duex. How do I change that? I found a thread that kind of exlains how to do it for the heatbed ("Remap heater channel / pin."). But I wan't to do it with the hotend heaters.

    Best regards and thanks in advance,
    Leo



  • @Leo-Lautsprecher Which firmware are you using (or planning to use)? The procedure is a lot different between RRF 2 and RRF 3.



  • The default is that all drivers on the Duex are extruders; see https://duet3d.dozuki.com/Wiki/Choosing_and_connecting_stepper_motors#Section_Stepper_Driver_Numbering

    Where you normally define the extruders, in M584, it would be something like:
    M584 X0 Y1 Z2 E3:4:5:6:7:8:9
    Try
    M584 X0 Y1 Z2 E5:6:7:8

    Then define heaters, and then tools that use the heaters and extruders.

    By defining the extruders specifically, you 'undefine' the remaining axes. The only problem with this is if you're using a PanelDue, which sort of ignores the definitions, and shows all the heaters/extruders up to the last defined one.

    Ian



  • Thanks to both of you. I'm currently using RRF 2. I thought it might be smarter to stick with a version thats been around for longer to I find answers to my problems more easily. Should I upgrade?

    By defining the extruders specifically, you 'undefine' the remaining axes. The only problem with this is if you're using a PanelDue, which sort of ignores the definitions, and shows all the heaters/extruders up to the last defined one.

    I am using a PanelDue. 😞
    Does anyone know if this is improved in RRF3?


  • administrators

    @Leo-Lautsprecher said in Remap Heater Channels for Hotends:

    I am using a PanelDue.
    Does anyone know if this is improved in RRF3?

    Yes. In RRF3 you can remap heaters 0, 1, 2 etc. to whatever pins you like. This means you can still use heater numbers 1,2,3,4 for your hot ends (which is what PanelDue assumes) even though they are all connected to the DueX.



  • Thanks a lot! I'm up and running wir RRF3 now 🙂


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