HEIDENHAIN iTNC 530 349
11.5 Global Program Settings (Software Option)
Technical prerequisites
To be able to use the handwheel superimposition function, 
HEIDENHAIN recommends the use of the HR 520 handwheel (see 
“Traversing with electronic handwheels” on page 444). Direct 
selection of the virtual tool axis is possible with the HR 520.
In principle, you can then use the HR 410 handwheel, but your 
machine tool builder must then assign a function key of the handwheel 
to selection of the virtual tool axis and program it in his PLC program.
The global program settings function is a software 
option and must be enabled by your machine tool builder.
To be able to use all functions without limits, the following 
machine parameters must be set:
 MP7641, bit 4 = 1:
Permit selection of the virtual axis on the HR 420
 MP7503 = 1:
Traverse in active tool-axis direction is active in the 
Manual operating mode and during a program 
interruption
 MP7682, bit 9 = 1:
Automatically transfer the tilted condition from the 
automatic mode to the Manual mode
 MP7682, bit 10 = 1:
Permit 3-D compensation with active tilted working 
plane and active M128 (TCPM)