July 2013 8.6 DCM – Dynamic Collision Monitoring 1477
Automatic
activation/
deactivation of
fixture situations
With the NC functions SEL FIXTURE and FIXTURE SELECTION RESET you
can activate or deactivate previously saved fixture situations in automatic
operation.
With SEL FIXTURE you can add a measured fixture to collision monitoring. The
fixture must be archived in a .zip file for this purpose. The file name can be
entered relative to TNC:\system\Fixture\archiv or as an absolute path. The
file extension ".zip" does not have to be entered.
FIXTURE SELECTION RESET removes all fixtures from all insertion points of
the collision monitoring.
A new pallet prototype ToPalPrFix.P was introduced for pallet management.
This prototype contains an additional FIXTURE column. In this column, the
name of a fixture can be entered in PAL-type lines. Using the FN18 SYSREAD
ID510 NR7 function, the pallet macro can check whether a fixture has been
entered in the pallet line and whether it can be activated. An existing fixture
can be activated with the FN17 SYSWRITE ID510 NR8 function.
Please note that the activation of a fixture is effective globally for the machine
beyond the end of program execution.
8.6.3 Tool carrier kinematics and DCM
DCM collision monitoring (software option 40) of the iTNC 530 already
protected tool carriers from collisions. The tool carriers to be monitored can be
selected from a list in the same way as machine kinematics. If necessary, the
operator can select the desired tool-carrier kinematics from the KINEMATIC
column in the tool table TOOL.T.
The ASSIGN KINEMATICS soft key is available to the operator in the tool table
for this. The list shows the operator all tool-carrier kinematics in *.TAB format
that are in the PLC:\Toolkinematics directory, as well as all tool-carrier
kinematics that are in *.CFX format from the TNC:\system\Toolkinematics
directory
If the operator selects a *.CFX file from the TNC directory as tool-carrier
kinematics for a tool, then when the TOOL CALL for this tool is performed, the
file is converted to a *.TAB file in the background. This is then saved to the
SYS partition and used for DCM collision monitoring.
If you change the carrier kinematics by editing the cfx file, you must re-
assign the carrier kinematics description to a tool in the tool table, and
execute a TOOL CALL. Not until the TOOL CALL does the TNC convert the
cfx file into *.TAB format and then activate the corrected carrier kinematics
description.
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