July 2010 23 – 389
23 Machine Operating Panel
23.1 Introduction
HEIDENHAIN machine operating panel MB 520 with axis-direction keys for up to 6 axes.
HEIDENHAIN machine operating panel MB 420 with axis-direction keys for up to 5 axes.
The MB is normally mounted below the TNC keyboard.
You can find the following on the machine operating panels:
The machine operating panel is connected to connector X46 of the MC.
The keys and buttons of the MB are transmitted as PLC inputs to the control.
The MB is provided with 8 PLC outputs (e.g., the lamps of the buttons can be controlled).
MB 520 MB 420
EMERGENCY STOP button
CONTROL ON button
NC START button
NC STOP button
Keys for spindle start and spindle stop
Axis direction keys for 6 axes
Various function keys
Two bore holes for additional buttons or
key switches (blocked with a cover when
shipped).
EMERGENCY STOP button
CONTROL ON button
NC START button
NC STOP button
Keys for spindle start and spindle stop
Axis direction keys for 5 axes
Various function keys
The MB keys are snap-ons, and can be switched.
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