No trigger on z after full movement

General Discussion
1

Basic Information:

Printer Model: RR 400
MCU / Printerboard: Octopus Pro 1.1 723h
Host / SBC - RPi4
klippy.log

Describe your issue:

I’m experiencing intermittent z-tilt failures reporting:

No trigger on probe after full movement

However, the system (presumably klipper/klippy) knows that a full movement has not been completed (see screenshot).

From the screenshot you can see that there was a successful probe at the first of the z-tilt locations. The probe is at the second of the locations and the reported z height is 18.92. The z_tilt configuration is pasted below but also in the logs, from it you can see that there is a z backoff of 20 mm. So, if the current z height is 18.92 this was not a full move.

2024-10-02_12-19
2024-10-02_12-191024×315 29.2 KB

[z_tilt]
z_positions = 
    0,0
    200,400
    400,0
points = 
    60, 37.5
    200, 317.5
    340, 37.5
horizontal_move_z = 20
retries = 10
retry_tolerance = 0.02
speed = 300

klippy.log (189.5 KB)

2

Digging into this, looks like it may in fact be a Beacon issue, as the error message is unique to their code.

3

In chatting with a member of the Annex Engineering Discord, they pointed out that the error is in fact from Klipper. Specifically from this section:

4

The error is not from Klipper, it’s the error message.
This occurs when after a certain movement no trigger signal (endstop, probe, etc.) is produced.

As for the log, all test points have been successfully been probed three times before.

When it came to the fourth time of probing, after the first point, the issue occurred.

Is this reproducible?
Have you checked proper moving of the z-axes?

BTW: You may tidy up your printer.cfg. Ther is [stepper_z] at the beginning and 500 lines later the other steppers and also the [tmc2240 stepper_z]

5

Yes, this is reproducible. We (Annex Enigneering and I) have found the root cause is a communication error. The error message in its above form is incorrect (there was no full move) and is being improved/changed: