Exclusive programming

In the default adjustment only absolute or incremental dimensioning may be selected in NC block. Redundant programming or programming of G90 and G91 in the same NC block is not allowed. That's why the position of G90/G91 inside the NC block has no meaning.

Programming example

: 
N10 X10 Y10 (Absolute dimensioning G90 is selected, Default) 
N20 G91 X20 Y20 (Deselection of absolute- and selection of relative) 
(programming) 
N30 X30 G90 Y30 (Deselection of relative- and selection of absolute) 
(programmig) 
: 
N100 G90 Z30 G90 (Error message: Redundant programming of G90/G91) 
N110 G91 X10 G90 Z30 (Error message: Redundant programming of G90/G91)