Poor work G28

Nikolay81

ytliu Posted at 2018-7-21 16:21
G28 instruction format: G28X_Y_Z_A_
Among them, X, Y, Z, A are the coordinates of the intermediate ...

Many thanks. G28 works correctly. G153, also works, but not quite right. In G53 you can set the speed. A G153 moves the X and Y axes at a speed of G0, and the Z axis with speed  "Z axies lifting protection speed". In the case G53, I write G53 G0 X1 Y-1 Z-1 and all the axes go to the point X1 Y-1 Z-1 with the speed G0 . Or I write G53 G1 Х1 Y-1 Z-1 F800 and all the axes go to the point Х1 Y-1 Z-1 at a speed of 800. With the G153 command this does not work. Can you add a change in speed to G153? Or, at least, to make the z-axis move at a speed G0?

ytliu

Nikolay81 Posted at 2018-7-20 17:43
Also, the G53 command, which many like, works incorrectly with the Z axis. For example, G90 G53 Х0  ...

G28 instruction format: G28X_Y_Z_A_
Among them, X, Y, Z, A are the coordinates of the intermediate point (below the current workpiece coordinate system) when returning to the machine zero. After the command is executed, all controlled axes will be quickly positioned to the intermediate point and then from the intermediate point to the machine zero.
If you want to return an axis directly to the machine zero via the G28 command, such as the Z axis, use:
G91G28Z0

In the DDCSV system, G53 is not a machine coordinate system movement command. The slib.nc in the attachment expands the G153 command for you. By this command, the tool can be moved to the desired machine coordinate position.

Nikolay81

Also, the G53 command, which many like, works incorrectly with the Z axis. For example, G90 G53 Х0 У0 will send the X and Y axes to the machine 0. Аnd G90 G53 Z0 will move the z-axis to the machine coordinate -19mm. Can you fix this command?

Nikolay81

ytliu Posted at 2018-7-20 08:22
Hi Nikolay81:
According to your request, I have changed the implementation of G28 (O9028) in slib.nc ...

Many thanks! Now the Z can be parked separately from other axes. But, as before, with the command G90 G28 X0 Y0 Z0, the axes first go to 0 of the current coordinate system, and only then, to machine zero. Can I have them go straight to the machine zero?

ytliu

Hi Nikolay81:
According to your request, I have changed the implementation of G28 (O9028) in slib.nc, Unzip the attachment and reinstall slib.nc on the controller.