Bugs in uccnc 1.2117

[VLTechnology]

I have noticed several issues in the new beta version of UCCNC:
• Tool diameter compensation: It is not possible to set a negative tool diameter offset due to input range restrictions. If the minimum allowed value is manually modified in Screen Edit (removing the 0 limit), the function works correctly. The default value needs to be updated to allow negative inputs.
• =1/2 button on MPG XHC-HB04: This button has stopped working.
• "Move Spindle To/From Probe" function in the Probe Offset section: This function cannot be activated.
• Intermittent issue with the homing procedure for a slaved axis: My machine has two motors on the Y axis—one connected as the Y-axis motor and the other as the B-axis motor, with B slaved to Y. When I home the Y axis using the "HOME Y" button, sometimes both motors move correctly, but other times only the Y-axis motor moves while the slaved B-axis motor remains stationary. When this happens, the machine starts twisting the gantry, which can lead to mechanical damage. However, using the "HOME ALL" button always works correctly, homing both motors simultaneously. I have not been able to determine a clear pattern for when this issue occurs, but I first noticed it in version 1.2116.
In the 1.2117 version this problem occurs less often, but it still remains.
• Tool length sensor dependency on the last selected machining plane (G17, G18, G19): If the program stops while executing an arc in a plane other than G17 (e.g., G18), the tool length sensor remains active in that plane and prevents measurement. The user must manually switch back to G17 before proceeding. This issue specifically affects the Mobile Probe Fixed Probe measurement mode.
• Incorrect front view trajectory display: The front view of the toolpath is displayed incorrectly—rotated by 90 degrees. The machine table appears rotated in the front view, leading to a misrepresentation of the actual machining position.

[cncdrive]

-Yes, we could update the tool dia to allow negative tool diameter, but what is the reason to use negative tool diameter?
-Unfortunately we do not have a working HB04 MPG anymore, so we cannot test it. I will check the code though to see if it has any bug which can be seens without testing it.
- On which page and where is the "Moves spindle to/from probe" function? This plugin was developed by one of my collegue who dies in December, so I have to check this myself, but quickly looking I could not find this button.
- Yes, the homing had this issue, we corrected it, it should be fine in 1.2118
- Please further describe this issue. How to exactly reproduce it.
-I don't understand the last point about front view trajectory display.

[elenagilbert]

Thanks for pointing these issues out! The slaved axis homing bug sounds especially concerning for machines with dual-motor setups. I really hope they fix these problems soon to ensure smoother and more reliable operation.
build now gg

[cncdrive]

The homing issue as far as I remember only happens if the machine gets e-stoped while the dual axis is getting homed, but only if the 2 axis are unslaved which happens when one motor reached the home switch and afterr the other started homing but did not finish yet.