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Movement Control Commands

3.2 Determining the coordinate value input modes

04.07

3-59

SINUMERIK 802D sl/840D/840D sl/840Di/840Di sl/810D ISO Milling (PGM) -- 04.07 Edition

3.2 Determining the coordinate value input modes

This section describes the commands used to input coordinate values.

3.2.1 Absolute/incremental design atio n (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 Absolute/incremental designation G codes

G code

Function Group

G90 Absolute designation 03

G91 Incremental designation 03

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.

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