11-16 TNC 407/TNC 415/TNC 425 3 Machine interfacing 01.98
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 V ACTUAL
V NOMINAL
Actual value [mm/min]
Nominal value [mm/min]
Position and trailing error S ACTUAL
S NOMINAL
D DIFF
[mm]
[mm]
Trailing error for position control [mm]
Speed
(digital speed control only)
N ACTUAL
N NOMINAL
N INT
Actual speed [mm/min]
Nominal speed [mm/min]
Nominal/actual difference for speed controller
Nominal value U ANALOGUE Analogue voltage [mV]
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) =
[]
[]
Feed rate mm / min
Traverse per rev. mm
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:
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