The version of the firmware I am using is VERSION: 1.09k-dc42
On start-up the Machine Control screen has orange Home X, Y and Z buttons (presumably as befits a Cartesian printer).
This is despite the fact that the loaded Config File (accessed via the Settings page of the Duet web control screen) does correctly show the M665 command.
Re-entering the M665 command via the G-Code Console screen results in the Machine Control screen re-setting to the version for a delta printer (i.e. only a blue ‘Home All’ button).
Their is a long pause (shows’ busy’ on the Machine Control screen) followed by the error message “Attempt to move head of a delta printer before homing the towers”.
Homing or moving X, Y or Z are not possible, all resulting in the same error message.
My conclusion is the Configuration File and the M665 command are being loaded from the SD card, but for some reason the M665 cannot be processed properly.
However I am still at a loss to know what to do.
Thank you for your help.