HEIDENHAIN TNC 640 User Manual page 818

19
19.4 Test run
Application
In the Test Run operating mode, you can simulate programs and
program sections in order to reduce NC programming errors when
programs are running. The control checks the programs for the
following:
Geometrical incompatibilities
Missing data
Impossible jumps
Violation of the machine's working space
Using disabled tools
The following functions are also available:
Blockwise test run
Interruption of test at any block
Optional block skip
Functions for graphic simulation
Measure machining time
Additional status display
Keep the following in mind when performing a test run
With cuboid workpiece blanks, the control starts a test run after a
tool call at the following position:
In the working plane in the center of the defined BLK FORM
In the tool axis, 1 mm above the MAX point defined in the BLK
FORM
With rotationally symmetrical workpiece blanks, the control starts a
test run after a tool call at the following position:
In the machining plane at the position X=0, Y=0
In the tool axis 1 mm above the defined workpiece blank
Danger of collision!
In the Test Run operating mode, the control does not take all
axis movements of the machine into consideration (e.g., PLC
positioning movements as well as movements from tool-change
macros and M functions). This can cause a test performed
without errors to later deviate from the machining operation.
Danger of collision during machining!
Test the NC program at the later machining position (BLANK
IN WORK SPACE)
Program a safe intermediate position after the tool change
and before prepositioning
Carefully test the NC program in the Program run, single
block operating mode
If possible, use the Dynamic Collision Monitoring (DCM)
function
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NOTICE
HEIDENHAIN | TNC 640 | Conversational Programming User's Manual | 10/2017
Test Run and Program Run | Test run