Siemens SINUMERIK 840D sl Function Manual page 115

End of definition
The end of definition is defined by the following subroutine:
EXECUTE(NOT_USED)
Parameters Type
NOT_USED
The definition of a machine-specific or channel-specific protection zone is completed with the
subroutine EXECUTE(n).
2.2.4 Definition via system variable
General
If the protection zones are defined with part program instructions (see Chapter: Definition for
each part program instructions), the protection zone data are stored in system variables. The
system variables can also be written directly so that the definition of protection areas can
also be performed directly in the system variables.
The same supplementary conditions apply for the definition of the contour of a protection
zone as for a protection-zone definition via part program instructions.
System variables
The protection zone definitions cover following system variables:
System variable
$SN_PA_ACTIV_IMMED[n]
$SC_PA_ACTIV_IMMED[n]
$SN_PA_T_W[n]
$SC_PA_T_W[n]
$SN_PA_ORI[n]
$SC_PA_ORI[n]
Basic logic functions: Axis monitoring, protection zones (A3)
Function Manual, 11/2006, 6FC5397-0BP10-2BA0
Description
Error variable has no effect in protection zones with EXECUTE.
INT
Type
BOOL
INT
INT
Significance
Activation type
The protection zone is active/not active immediately after
the power up of the control and the referencing of the axes.
not immediately active
FALSE
immediately active
TRUE
Protection zone type
0 Workpiece-related protection zone
1 reserved
2 reserved
3 Tool-related protection zone
Orientation of the protection zone, i.e. polygon definition in
the plane of:
0 1. and 2nd geometry axis
1 3. and 1st geometry axis
2 2. and 3ard geometry axis
Detailed description
2.2 Protection zones
49