axis without limits

is it possible to move an axis without limit of length?

I need to rotate a roller incrementally without having a maximum and minimum limit , it's for a hot stampin machine.

performs a single axis setup, and an .ngc file with an incremental G code, but stops when it reaches the limit of the axis

How could I tell Linuxcnc that the axis does not have machine limits, so that the roller rotates infinitely ?

Thank You

If the limits are undefined in the [JOINT_] and [_AXIS] sections of the ini file then the values default to +-1E99.

I am using 2.7.15.

It is not possible to define an axis without limitis, an out of limit error occurs.

In order to carry out this project of making a roller rotate continuously, I need to have an axis without limits, since although there is a measure to be executed, which is the length of the paper to be moved, the sum of many displacements exceeds any minimum or maximum limit. required by Linuxcnc

Not sure about this as I only run 2.8 and later but it is stated in the documentation:

linuxcnc.org/docs/2.7/html/config/ini-co...s__lt_num_gt_section

• MIN_LIMIT = -1000 - The minimum limit for axis motion, in machine units. When this limit is reached, the controller aborts axis motion. The axis must be homed before MIN_LIMIT is in force. For a rotary axis with unlimited rotation having no MIN_LIMIT for that axis in the [AXIS_n] section then the value -1e99 is used.
• MAX_LIMIT = 1000 - The maximum limit for axis motion, in machine units. When this limit is reached, the controller aborts axis motion. The axis must be homed before MAX_LIMIT is in force. For a rotary axis with unlimited rotation having no MAX_LIMIT for that axis in the [AXIS_n] section then the value 1e99 is used.

Yes, I have read that, that's why I asked if it was possible in some way to program a free axis, or define it free without limits.

thank you

Don't make it an axis, rather just use hal to drive the motor. Take a look at my stepper winder example.

gnipsel.com/linuxcnc/examples.html

JT