Basic Theory - Siemens Sinumerik 808D Operating Manual

Additional
Information
Part 2

Basic Theory

G110 Pole specification relative to the setpoint position last programmed
(in the plane, e.g. with G17: X/Y)
(when using G110, please always take the current position of the
tool as the reference point to specify the new pole)
Pole specification relative to the origin of the current workpiece
G111
coordinate system
(
Pole specification, relative to the last valid pole; retain plane
G112
Programming example
N10 G17
N20 G111 X17 Y36
AP=45 RP=50
...
N80 G112 X35.35 Y35.35
AP=45 RP=27.8
N90 ... AP=12.5 RP=47.679
N100 ... AP=26.3 RP=7.344 Z4
Operating and Programming — Milling
in the plane, e.g. with G17: X/Y
）
; X/Y plane
; pole coordinates in the current workpiece
coordinate system
; new pole, relative to the last pole as a
polar coordinate
; polar coordinate
; polar coordinate and Z axis（= cylinder
coordinate）
Additive
workpiece
offsets
The programmable workpiece offsets TRANS and ATRANS can be used
in the following cases:
● For recurring shapes/arrangements in various positions on the work-
piece
● When selecting a new reference point for dimensioning
This results in the current workpiece coordinate system.
TRANS X...Y... Z... ; programmable offset（absolute）
ATRANS X...Y... Z... ; programmable offset, additive to existing offset
（incremental）
TRANS ; without values, clears old commands for offset
Programming example
N20 TRANS X20.0 Y15.0
L10
Page 80
s
programmable offset
subprogram call
808D