1514 HEIDENHAIN Technical Manual iTNC 530 HSCI
All keys are evaluated by the NC. Certain keys are mapped to markers.
Activation and
override
potentiometers
If the HR 420 is activated (via the handwheel key on the HR), a small pop-up
window appears on the screen of the iTNC and entries via the keys (keyboard
and horizontal soft keys) are disabled. However, the override potentiometers
of the keyboard remain active.
The activation of the HR 420 can be disabled by PLC. If you set the marker
M4680, the message HR not allowed appears in the handwheel's display. If
the marker is set and the user presses the handwheel activation key, the error
message Wrong operating mode for handwheel appears.
If the marker M4680 is set when the handwheel is active, the marker has no
effect.
If the override potentiometers of the handwheel are to become active, then
this can only be done with the <Ctrl> + <handwheel symbol> key combination
on the HR 420.
If this key combination is pressed, then a selection menu appears on the
handwheel, in which the potentiometers to be activated must be selected.
Display: Handwheel/ Operating panel
Soft keys on the handwheel:
• Soft key F1: HW (potentiometers on the handwheel become active)
• Soft key F2: KBD (potentiometers on the operating panel become active)
F1 F2 F3 F4 F5
XYZIVV
↑
Handwheel
active/
inactive
↓
–
(M4667)
Rapid
traverse
(M4663)
+
(M4666)
Spindle
start
(M4664)
Actual
position
capture
NC start
(M4661)
Spindle
stop
(M4665)
Ctrl
(M4668)
NC stop
(M4662)