Jog troubles
- ts
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25 Mar 2026 07:21 #344700
by ts
Jog troubles was created by ts
JT, hi. Its me again for today)
I have Cnc machine with axis - xyz and C. (C because it is rotated around Z axis).
when im powerup the machine and starting jogging it, i have to use axis C as axis for jog number 3 - jog_plus_pb_3. But after homing that axis became axis number 5. And after homing i have to use jog_plus_pb_5.
It is strange, and i found only that i could block jogging button for C axis until homing is conpleted. Is there any more flex solutolions for this issue?)
Thanks in advance!
TS
I have Cnc machine with axis - xyz and C. (C because it is rotated around Z axis).
when im powerup the machine and starting jogging it, i have to use axis C as axis for jog number 3 - jog_plus_pb_3. But after homing that axis became axis number 5. And after homing i have to use jog_plus_pb_5.
It is strange, and i found only that i could block jogging button for C axis until homing is conpleted. Is there any more flex solutolions for this issue?)
Thanks in advance!
TS
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27 Mar 2026 18:42 #344839
by JT
Replied by JT on topic Jog troubles
That's a LinuxCNC issue the joints are numbered 0-8 for xyzabcuvw so c is joint 5.
Maybe a jog axis button would work. I'd have to test.
JT
Maybe a jog axis button would work. I'd have to test.
JT
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28 Mar 2026 00:18 #344852
by rodw
Replied by rodw on topic Jog troubles
why jog before homing? I always disable it.
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28 Mar 2026 03:10 #344865
by ts
Replied by ts on topic Jog troubles
Yes, it will work. But only after homing.
Before homing its work as 3rd number (all axus numbers are 0-1-2-3 )
Before homing its work as 3rd number (all axus numbers are 0-1-2-3 )
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28 Mar 2026 03:14 #344866
by ts
Replied by ts on topic Jog troubles
Hi, Rodw! Glad to see you in this topic)
Jog before homing.. hmmm.. for example, edm machine , some emergency, estop pressed or power loss.. and mechanical of the machine stucked. I have to move before homing, because homing may broke everything on the work table
Jog before homing.. hmmm.. for example, edm machine , some emergency, estop pressed or power loss.. and mechanical of the machine stucked. I have to move before homing, because homing may broke everything on the work table
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28 Mar 2026 10:57 #344872
by JT
Replied by JT on topic Jog troubles
The following is the Python interface so it forces you to use joint number before homing then use index of axis after homing.
JT
joint_num_or_axis_index
For joint jog (jjogmode=1)
joint_number
For axis Cartesian coordinate jog (jjogmode=0)
zero-based index of the axis coordinate with respect to the known coordinate letters XYZABCUVW (x=>0,y=>1,z=>2,a=>3,b=>4,c=>5,u=>6,v=>7,w=>8)JT
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