Indirectly Programming Position Attributes (Gp) - Siemens SINUMERIK 840D sl Programming Manual

Nc programming

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3.1 Flexible NC programming

G[<group>]=<number>

Generally, only G commands that do not determine the syntax can be indirectly programmed.

Only G group 1 is possible from the G commands that determine the syntax.

The syntax-determining G commands of G groups 2, 3 and 4 are not possible.

Arithmetic functions are not permitted in the indirect G command programming. If it is

necessary to calculate the G command number, this must be done in a separate part program

line before the indirect G command programming.

Example 1: Adjustable work offset (G group 8)

Program code

N1010 DEF INT INT_VAR

N1020 INT_VAR=2

N1090 G[8]=INT_VAR G1 X0 Y0

N1100 INT_VAR=INT_VAR+1

N1110 G[8]=INT_VAR G1 X0 Y0

Example 2: Level selection (G group 6)

Program code

N2010 R10=$P_GG[6]

N2090 G[6]=R10

Indirectly programming position attributes (GP)

Position attributes, e.g. the incremental or absolute programming of the axis position, can be

indirectly programmed as variables in conjunction with the key word GP.

G command with extension (index)

Index parameter: G group

Variable for the G command number

; G command calculation

; Read active G command of G group 6

Programming Manual, 12/2019, 6FC5398-2EP40-0BA0

NC programming

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Sinumerik 840de sl