jogging through Python interface fails for joints/axes != 0 (LinuxCNC master)

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9 years 8 months ago #88628 by DaBit
jogging through Python interface fails for joints/axes != 0 (LinuxCNC master) was created by DaBit
At some point in time I ran into the problem that I cannot jog an axis or joint other than 0 through the Python interface.
LinuxCNC is master, up to date.

When running sim.axis, axis_mm.ini, this code fails:
Code:
#!/usr/bin/env python import linuxcnc command = linuxcnc.command() status = linuxcnc.stat() status.poll() if status.task_mode != linuxcnc.MODE_MANUAL: print "Switching to manual mode.." command.mode(linuxcnc.MODE_MANUAL) # Switching TP mode does not make any difference #if status.motion_type == linuxcnc.TRAJ_MODE_TELEOP: #print "Switching to joint mode.." #command.traj_mode(linuxcnc.MODE_FREE) #command.teleop_enable(False) # axis/joint 0, this works command.jog(linuxcnc.JOG_INCREMENT,0,False,100,1) # axis/joint 1, produces bad axis num cmd=48 error. It also fails if we want to jog in Joint mode. command.jog(linuxcnc.JOG_INCREMENT,1,False,100,1)

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Link to the doc for the Python interface: linuxcnc.org/docs/devel/html/config/pyth...ommand_tt_attributes


Previously it worked, but I don't know exactly when it stopped doing that. Bug or user error?

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9 years 8 months ago #88630 by dgarrett
Replied by dgarrett on topic jogging through Python interface fails for joints/axes != 0 (LinuxCNC master)
In the master branch, as updated for joints_axes, the second
parameter to the jog() command is a joint-flag to select
jointmode (True) or teleop (False) jogging and the third
parameter is an axis-or-joint-number

so your failing commmand:

command.jog(linuxcnc.JOG_INCREMENT,1,False,100,1)

should probably be:

command.jog(linuxcnc.JOG_INCREMENT,False,1,100,1)


updated docs:
git.linuxcnc.org/gitweb?p=linuxcnc.git;a...a457bd6ffdece845920c
git.linuxcnc.org/gitweb?p=linuxcnc.git;a...6fe92f55c04b30937edf

eventually these will show up here:
linuxcnc.org/docs/devel/html/config/python-interface.html

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9 years 8 months ago #88636 by DaBit
Replied by DaBit on topic jogging through Python interface fails for joints/axes != 0 (LinuxCNC master)
I can confirm that swapping axis-num and joint-flag solves the problem

Thanks!

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