772 HEIDENHAIN Technical Manual iTNC 530 HSCI
Virtual tool axis
(VT)
With the iTNC 530, handwheel superimposed traverse in the active tool axis
system "Virtual Tool Axis VT" is possible when TCPM is active. This function is
available in the Global Program Settings (option 44). When the HR 5xx is
connected, the position of the virtual tool axis is displayed separately. It can be
used in automatic mode when the HR 5xx/HR 410 is connected.
Requirements that must be met for using the Virtual Tool Axis VT:
TCPM (Tool Center Point Management) function must be active.
DCM (Dynamic Collision Monitoring) must be deactivated.
MP7641 bit 4 "Handwheel superimposition in the active tool-axis direction"
must be set.
MP7503 "Virtual tool axis" must be set.
MP7682 bit 9 "Load tilted working plane" should be set for the tilting values
to be loaded into the Manual Operation mode during a program
interruption.
T must be entered in MP410.x for the virtual tool axis (VT).
Global Program Setting software option (option 44) must be activated.
In the Global Program Settings you must define the permissible traverse
range for the VT axis (as with M118).
Marker M4576 "Disable handwheel pulses" must not be set.
Associated new functions:
In the Global Program Settings for handwheel superimposition, the axis VT
can also be activated for the active tool-axis direction.
If an HR 5xx is used, the axis VT can be selected for it in the axis menu.
When an HR 410 handwheel is connected, the axis VT can be selected via
PLC module 9036 (selection parameter 6 (handwheel axis); axis value -1).
If selection parameter 10 (handwheel axis) is selected, PLC Module 9035
supplies the value $8000000 (bit 31 is set) if the VT axis is active.
If the handwheel traverses an offset in this axis, the tool length
compensation will change (additional DL).
This additional length compensation is retained after a tool change.
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