The puma configuration is a set of files that makes up a very basic LinuxCNC scara simulation using ini, tbl, var. It is very similar to the sim config template, yet with 4 joints defined.

scara.ini
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Config file for a SCARA type robot.

You need to specify what kinematics should get used (loadrt scarakins in your hal file)

If you change the HOME location in TRAJ, make sure you change the appropiate HOME locations of the AXES aswell, and make sure the position match (when run through the kinematics).