Oscilloscope; Note On Speed Curves; Tnc 415 B/Tnc - HEIDENHAIN TNC 415 Technical Manual

3.4 Oscilloscope

An oscilloscope has been integrated in the TNC 407/TNC 415 B/TNC 425 for trimming and
optimizing the speed and position controllers.
The characteristic curves which the oscilloscope records can be stored in 4 channels and for all axis.
The following curves can be displayed:
Feed rate
Position and trailing error
Speed
(digital speed control only)
Nominal value

Note on speed curves

Rotational speeds are recorded as feed rates in mm/min. The speed in rpm. can be calculated with
the help of the distance covered per revolution, i.e.
Rotational speed (rpm) =
The data recorded for the display are stored until an NC graphic is called. Likewise a computed
graphic simulation is deleted by the oscilloscope display.
A total of 5 colours can be selected in machine parameters for the oscilloscope display. They are
selected in exactly the same way as the 3-plane view in NC graphic simulation.
MP7361.0 Background
MP7261.1 Grid
MP7361.2 Non-selected channels
MP7361.3 Cursor line, data, screen window
MP7361.4 Selected channel
The "Oscilloscope" mode is entered by keying in code number 688 379.
If you leave the Oscilloscope mode you can re-enter it using the MOD key and the OSZI soft key.
The code number must only be re-keyed when the supply voltage has been switched off.
The following main display appears when the mode is called:
11-16 TNC 407/TNC 415/TNC 425
V ACTUAL Actual value [mm/min]
V NOMINAL Nominal value [mm/min]
S ACTUAL [mm]
S NOMINAL [mm]
D DIFF Trailing error for position control [mm]
N ACTUAL Actual speed [mm/min]
N NOMINAL Nominal speed [mm/min]
N INT Nominal/actual difference for speed controller
U ANALOGUE Analogue voltage [mV]
[ ]
Feed rate mm / min
[ ]
Traverse per rev. mm
3 Machine interfacing 01.98