Jog troubles

ts
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7 months 6 days ago #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

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JT
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7 months 3 days ago #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

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rodw
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7 months 3 days ago #344852 by rodw

Replied by rodw on topic Jog troubles

why jog before homing? I always disable it.

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ts
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7 months 3 days ago #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 )

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ts
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7 months 3 days ago #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

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JT
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7 months 2 days ago #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.

Code:

    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)

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