HEIDENHAIN ITNC 530 - 6-2010 DIN-ISO PROGRAMMING User Manual page 445

As soon as you have activated the handwheel with the handwheel
activation key, the operating panel is locked. This is indicated by a pop-
up window on the TNC screen.
The HR 5xx handwheels feature the following operating elements:
1 EMERGENCY STOP button
2 Handwheel display for status display and function selection, for
further information, See "Handwheel display" on page 446.
3 Soft keys
4 Axis selection keys; can be exchanged by the machine
manufacturer depending on the axis configuration
5 Handwheel activation key
6 Arrow keys for defining handwheel sensitivity
7 Permissive button
8 Key for TNC traverse direction of the selected axis
9 Rapid traverse superimposition for direction key
10 Spindle switch-on (machine-dependent function, key can be
exchanged by the machine manufacturer)
11 "Generate NC block" key (machine-dependent function, key can
be exchanged by the machine manufacturer)
12 Spindle switch-off (machine-dependent function, key can be
exchanged by the machine manufacturer)
13 CTRL key for special functions (machine-dependent function, key
can be exchanged by the machine manufacturer)
14 NC start (machine-dependent function, key can be exchanged by
the machine manufacturer)
15 NC stop (machine-dependent function, key can be exchanged by
the machine manufacturer)
16 Handwheel
17 Spindle speed potentiometer
18 Feed rate potentiometer
19 Cable connection, not available with the HR 550 FS wireless
handwheel
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