Creation Mode For Automatic Tool Protection Areas; System Variables: Protection Areas; Overview - Siemens SINUMERIK 840D sl Function Manual

The control system automatically models the protection area bodies based on the geometric
data of the tool active at the time of creation. The number of triangles correspondingly
increases:
● as the geometric complexity of the tool increases.
● as the parameterized collision tolerance decreases.
Note
Protection area bodies and collision tolerance
The protection area bodies of automatic tool protection areas are, as standard, created by the
control with a precision of 1/3 of the collision tolerance (Page 267).
6.2.2.7

Creation mode for automatic tool protection areas

The machine data defines how the control creates protection area bodies of automatic tool
protection areas.
MD18899 $MN_PROT_AREA_TOOL_MASK = <mode>
<Mode>
Bit
0
6.2.3

System variables: Protection areas

6.2.3.1

Overview

A protection area is parameterized with the following system variables:
Name
$NP_PROT_NAME
$NP_CHAIN_ELEM
$NP_PROT_TYPE
$NP_1ST_PROT
$NP_PROT_COLOR
$NP_PROT_D_LEVEL
$NP_BIT_NO
$NP_INIT_STAT
$NP_INDEX
Special functions
Function Manual, 01/2015, 6FC5397-2BP40-5BA2
Val‐ Meaning
ue
0 Do not apply heuristic model generation
1 Heuristic model generation using tool data
K8: Geometric machine modeling - only 840D sl
Meaning
Name of the protection area
Name of the kinematic element to which the protection area is as‐
signed
Type of the protection area
Name of the first protection area element
Color and transparency of the protection area.
Detail level for the protection area
Number of NC/PLC interface bits of the protection area
Initialization status of the protection area
Address of the geometric data of the machine element to be protected
(only relevant for automatic protection areas)
6.2 Commissioning
221