Fagor 8025 T CNC, Operating Manual

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102 8025/8030 CNC PROGRAMMING MANUAL
6.28. G90 G91. ABSOLUTE AND INCREMENTAL PROGRAMMING
The programming of the coordinates of a point, may be carried out, either in absolute
coordinates G90 or in incremental coordinates G91.
When operating on G90, the coordinates of a point programmed, are referred to the point
of the coordinate origin.
When operating on G91, the coordinates of the point programmed, are referred to the
path’s previous point; i.e. the programmed values identify the distance to go along the
relevant axis.
When turning on and after executing M02,M30, EMERGENCY or RESET, the CNC
assumes the function G90.
The functions G90 and G91 are incompatible with each other when being in the same
block.
Absolute programming G90
N100 G90 G01 X40 Z30 P0 --> P1
N110 X60 Z20
P1 --> P2
Incremental programming G91
N100 G91 G01 X20 Z-20 P0 --> P1
N110 X20 Z-10 P1 —> P2