Keep in mind the directions indicate the direction the TOOL moves, not the table. The long axis is typically X, and runs parallel to the front of the machine, with Y running front to back. When looking at the machine from the front, X+ will move the tool to the right (or the table to the left), X- will move the tool to the left (or the table to the right). Y+ will move the tool towards the rear of the table (or the table towards the front, away from the column), and Y- moves the tool towards the front of the machine (or the table towards the rear, towards the column). Z is the vertical axis, and Z+ moves the tool up (or the table down), Z- moves the tool down (or the table up).
Regards,
Ray L.