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If I understood your requirement correctly, then this is not possible. Once a movement is queued, it is executed once it is time and cannot be prematurely interrupted.

Thanks for your reply. If the motion is executed, then there has to be a way to interrupt that motion in between. I mean mcu is sending pulses for a given time period at a given frequency, so there has to be a way to stop that pulses at any given time. I do agree that it is not straightforward, bu…

I think what your looking for is something similar to a macro i wrote for homing filament using a runout sensor. This is possible through the use of delated gcode macros. Take for example this, the call to load_filament, triggers a delayed gcode by setting its duration [gcode_macro LOAD_FILAMENT]…

Hello @mjfsch ! Please use Preformatted Text for posting code instead of Blockquote. It’s better to read Leading spaces are not clipped off. [Format]

[image] ARP: I want to add this custom GCode within a conditional loop to interrupt the motion of my manual stepper. [image] Sineos: If I understood your requirement correctly, then this is not possible. Once a movement is queued, it is executed once it is time and cannot be prematurely i…

[image] ARP: I do agree that it is not straightforward, but I do not agree that it is impossible. I did not state that it is impossible. I stated that it is (currently) not possible. [image] mjfsch: This is possible through the use of delated gcode macros. Nice solution. The applicabi…

[image] mjfsch: I think what your looking for is something similar to a macro i wrote for homing filament using a runout sensor. Thanks for your insights! Could you describe the logical sequence of the macros along with the objective?

[image] cardoc: In order to maintain synchronized moves of multiple steppers, once a move is initiated Klipper has no method for canceling the move. The manual stepper I am using is isolated from the kinematics and its movements are asynchronous to other steppers. The primary function of this…

[image] cardoc: You could, however, break your move into small pieces and send multiple small moves out of your conditional loop. This is actually my last resort. But I want to believe that there might be a brute force way to interrupt single motion command :smile:

The macro example i posted, is a homing routine for a multi filament system, its triggered by filament been fed into a sensor and feeds till it triggers a second sensor. I limited the example shown to the course feeding as it seemed more applicable the actual macro i us then removes filament using …

Manual stepper: How to stop/interrupt ongoing/future motion?

General Discussion

cardoc August 3, 2025, 5:27pm 15

Could the endstop pin be a virtual pin?

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Manual stepper: How to stop/interrupt ongoing/future motion?

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