I have a post for a Mori lathe, but I need to have it post out negative values in the X and need to swap the G2 and G3s.  

I have done some searching and cannot find exactly what I need to modify in my post in order for this to happen. I want to be able to open a MasterCam file and simply change the post and have it post correctly.  I do not want to have to modify the drawing or entities.  

I found this in another post, but it doesn't really say what needs change...just where to look.  

Can anyone please help me out and let me know what I am looking for and what I need to change in order for this to work?  

Thanks.

Quote

Most of the settings for reversing sign are in the Machining position turret/spindle array.

After you get the X axis to reverse sign, you will probably find that you will have to change the G2 to G3

 

This area of the post

 

# Decimal (required)
# I - Plane 0, X axis, 0 = normal, 1 = switch sign from basic
# J - Plane 0, Y axis, 0 = normal, 1 = switch sign from basic
# K - Plane 0, Z axis, 0 = normal, 1 = switch sign from basic
# L - Plane 1, X axis, 0 = normal, 1 = switch sign from basic
# M - Plane 1, Y axis, 0 = normal, 1 = switch sign from basic
# N - Plane 1, Z axis, 0 = normal, 1 = switch sign from basic
# O - Plane 2, X axis, 0 = normal, 1 = switch sign from basic
# P - Plane 2, Y axis, 0 = normal, 1 = switch sign from basic
# Q - Plane 2, Z axis, 0 = normal, 1 = switch sign from basic
use_only_tl : 1     #Use only Top turret/Left spindle settings (below) for
                    #all Mastercam turret/spindle selections
                    #When configuring for multi-spindle/turret set to 0

#Columns-       ABCDEFGH.IJKLMNOPQ #Turret/Spindle            #Path Type
scase_tl_c1  : "10000222.100100100"  #Top turret/Left spindle, Turning cut
scase_tl_c2  : "10000012.100100000"  #Top turret/Left spindle, Right Face cut
scase_tl_c_2 : "10110012.100100000"  #Top turret/Left spindle, Left Face cut
scase_tl_c3  : "10010102.100100000"  #Top turret/Left spindle, Cross cut (cuttype = 3)
scase_tl_c3r : "10001102.100100000"  #Top turret/Left spindle, Reverse Cross cut (cuttype = -3)
scase_tl_c4c : "10000222.100100000"  #Top turret/Left spindle, Y axis subs. Cycle
scase_tl_c4  : "10000122.100100000"  #Top turret/Left spindle, Y axis subs.scase_tl_c5  : "10000222.100100000"  #Top turret/Left spindle, Multisurf Rotary