Program Support Functions - Siemens SINUMERIK 802D sl Programming Manual

04.07
4.8

Program support functions (2)

4.8.1 Working area limitation (G22, G23)
The working area limitation function checks whether the present position of axes
operated manually or automatically enters the stored stroke limit (entry prohibited
area) which is set by G22. If an axis has entered the stroke end limit, operation is
stopped and an alarm occurs.
A protection zone predetermined by machine data setting must exist if G com-
mands G22 and G23 are used. Further, the following machine data need to be set:
$MN_NUM_PROTECT_AREA_NCK = 2 (minimum)
$MC_NUM_PROTECT_AREA_ACTIVE = 2 (minimum)
When programming G22, the area inside the boundary becomes the forbidden
area.
An upper (G23) and lower (G22) working area limit is defined for each axis. These
values apply immediately and are not lost on Reset and when the control is swit-
ched on again. The tool (milling tool) radius can be changed in the channel--speci-
fic machine data $MC_WORKAREA_WITH_TOOL_RADIUS.
Z
Basis- -
Koordinaten- -
System
Fig. 4-24
© Siemens AG 2007 All rights reserved
SINUMERIK 802D sl/840D/840D sl/840Di/840Di sl/810D ISO Milling (PGM) -- 04.07 Edition
Y
X
Enhanced Level Commands
4.8 Program support functions (2)
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