Determining The Coordinate Value Input Modes; Absolute/Incremental Designation (G90, G91) - Siemens SINUMERIK 802D sl Programming Manual

04.07
3.2

Determining the coordinate value input modes

This section describes the commands used to input coordinate values.
3.2.1

Absolute/incremental designation (G90, G91)

These G codes specify whether dimension values specified following an axis
address are given in an absolute value or incremental value.
Using the G90/G91 command
Features of G90 and G91
Table 3-3
G90
G91
S G90 and G91 are modal G code belonging to 03-group. If G90 and G91 are
specified in the same block, the one specified later is valid.
S The power-ON state, that is the G90 or G91 mode that is valid when the power
is turned ON, can be set to MD 20154:
EXTERN_GCODE_RESET_VALUES[2].
Command format
S For the commands specified in and after the G90 block, the dimension values
specified following an address of X, Y, Z, 4th are treated as absolute values.
S For the commands specified in and after the G91 block, the dimension values
are treated as incremental values.
© Siemens AG 2007 All rights reserved
SINUMERIK 802D sl/840D/840D sl/840Di/840Di sl/810D ISO Milling (PGM) - - 04.07 Edition
3.2 Determining the coordinate value input modes
Absolute/incremental designation G codes
G code
Absolute designation
Incremental designation
Movement Control Commands
Function
03
03
Group
3-59