CALIBRATE_Z command raised internal error

[dukeduck1984]

Hi,

When I executed CALIBRATE_Z, an error was raised as following:

16:12:09  $ CALIBRATE_Z
16:12:09  // Klipper state: Shutdown
16:12:09  !! Internal error on command:"BASE_CALIBRATE_Z"
16:12:09  !! Internal error on command:"CALIBRATE_Z"

And also a pop warning message float argument required, not NoneType.

This is what I found by looking at the traceback in the klippy.log:

Internal error on command:"BASE_CALIBRATE_Z"
Traceback (most recent call last):
  File "/home/pi/klipper/klippy/gcode.py", line 182, in _process_commands
    handler(gcmd)
  File "/home/pi/klipper/klippy/gcode.py", line 120, in <lambda>
    func = lambda params: origfunc(self._get_extended_params(params))
  File "/home/pi/klipper/klippy/gcode.py", line 120, in <lambda>
    func = lambda params: origfunc(self._get_extended_params(params))
  File "/home/pi/klipper/klippy/extras/z_calibration.py", line 140, in cmd_CALIBRATE_Z
    self._log_config()
  File "/home/pi/klipper/klippy/extras/z_calibration.py", line 233, in _log_config
    self.probe_bed_site[0], self.probe_bed_site[1]))
TypeError: float argument required, not NoneType
Transition to shutdown state: Internal error on command:"BASE_CALIBRATE_Z"

I commented out both probe_bed_x & probe_bed_y in z_calibration.cfg, but did have relative_reference_index configured in bed_mesh section in printer.cfg.

Is there anything else I might have missed?

Thanks for the help in advance.

Kaiyuan

[dukeduck1984]

The same error occured even when I had set the value for probe_bed_x & probe_bed_y.

Both the Klipper & the Moonraker are the lastest version.

[dukeduck1984]

I had tried commenting out line 225 & 233 in method _log_config(), and the same error occured again but the traceback pointed to probe_switch_site - apparently the list probe_switch_site contained None as well. So I commented out line self._log_config() from method cmd_CALIBRATE_Z() and then it worked.

Any way to fix this?

[aaron-neal]

I'm also struggling with this setup on a clean install. I think the error is the same.

[julianschill]

I figured the problem is, that some variables get initialized on homing of Z. So they are None until Z is homed. https://github.com/protoloft/klipper_z_calibration/blob/cb68379941dfb6189cc9b2a4904cc3d6ce23024f/z_calibration.py#L116-L131

Best thing would be to query if Z is homed before continuing. It doesn't make sense to calibrate without Z being homed.

[TitusLabs]

Oh no, there is no check for homed Z axis :see_no_evil: I will add it...

[TitusLabs]

I've added a check for homed axes.