So this relates to a comment/problem regarding the older Turning centres, specifically Fanuc circa 80's and early 90's (0T through to 10 and 11T and even some of the 15T's). They have to have an inverted X-axis (X positive towards the center of spindle). Perhaps an option that is added to the generic Fanuc Turning post with a default as the regular X direction and option to invert.