HEIDENHAIN TNC 415 (259 9x0) Service Manual - Manual (Page 137)

SERVICE MANUAL TNC 415B/425
Page 132
Issue: 20.08.95
Channel 1 to Channel 4
Four channels can be selected for recording. The assignment of the axes to the channels is variable;
select the axis to be changed, press ENT to switch the channel.
For each channel a characteristic line is selected. It consists of the following values:
Feed rate V ACTL actual value (mm/min)
V NOML nominal value (mm/min)
Shaft speed N ACTL actual value (mm/min)
N NOML nominal value (mm/min)
Speed controller N INT difference of nominal/actual value for the speed controller (mm/min)
Position S ACTL actual value (mm)
S NOML nominal value(mm)
Servo lag S DIFF servo lag for position controller (mm)
Analogue voltage U ANALOG analogue voltage output (V)
Channel OFF channel is displayed
SAVED channel is stored
Recording is started by pressing the START soft key. A soft key row is displayed which only contains a
STOP key. The process can be interrupted at any time.
During recording the stored channels cannot be displayed simultaneously, since it is not possible to
synchronise the stored channels and the newly recorded channels.
Evaluation of the recorded channels via cursor
Whereas the entire memory contents is displayed after start, the time window selected before the start is
displayed after re-setup of the screen.
On the left side of the screen the time T1 (time of trigger event) is displayed. Below there is the absolute
value in
[
mm/min
]
,
[
mm
]
or
[
mV
]
.
If an additional cursor with the time T2 is displayed by means of the key CURSOR 1/2, it can be shifted with
the arrow keys on the TNC operating panel. The time T2 is the difference to T1; the numerical value displayed
below is the difference to the value belonging to T1.
The T2 display and the additional cursor can be erased by pressing the soft key END or "Cursor 1/2".
Vertical Zoom
For the display of each selected channel the vertical grid can be changed in steps via soft key. The vertical grid
size is displayed on the left side of the screen below the designations of the channel and the recording.
Centering the Display
The vertical resolution is selected such that an optimum display is ensured.
Returning to the original vertical resolution:
By pressing NOENT the original display of the stored data is re-established.
Horizontal Zoom
The recording comprises 4096 evaluated data. The time resolution (i.e. the clock time of the recorded data)
can be set between 0.6 and 6 ms. The range for extension and compression is limited as follows:
evaluated data data: pixels
minimum display 4096 8 : 1
max. extended display 64 1 : 8
The length of the displayed detail and its starting point as absolute position within the duration of the recorded
data is depicted as scroll bar in the status window.