My G code macro would look something like this
G00 Z5.0 M09 lift tool off of the work piece and turn off coolant
(tool change to T2) note to self
G21 G40 G54 go to absolute coordinates
G00 Z88.0 M05 bring Z up to tool change position, turn off spindle (align?)
G01 A200.00 F10. move tool changer in
G01 B20.0 release retention knob
G01 Z0. Z up out of the way
G01 C100.0 rotate carousel to position 2
G01 Z88.0 Z back onto the tool
G01 B0.0 lock retention knob
G01 A0.0 carousel back to home
G21 G43 G55 back to program
Once programmed into my post processor this would be easy.
Any alignment problems would be corrected by changing the travel distance.
Timothy