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Fax: +49 2162 / 16230
www.elektroautomatik.de
PSI 9000 DT Series
3.10.10.1 Loading and saving the arbitrary function
The 99 sequence points of the arbitrary function, which can be manually configured with the control panel of the
device and which are applicable either to voltage (U) or current (I), can be saved to or loaded from a common
USB stick via the front side USB port. Generally, all 99 points are saved or loaded using a text file of type CSV
(semicolon separator), which represents a table of values.
In order to load a sequence point table for the arbitrary generator, following requirements have to be met:
•
The table must contain exactly 99 rows (100 are also accepted for compatibility to older firmwares) with 8 sub
-
sequent columns and must not have gaps
•
The column separator (semicolon or comma) must be as selected by MENU parameter “USB file separator
format”; it also defines the decimal separator (dot or comma) of values
•
The files must be stored inside a folder called HMI_FILES which has to be in the root of the USB drive
•
The file name must always start with WAVE_U or WAVE_I (not case-sensitive)
•
All values in every row and column have to be within the specified range (see below)
•
The columns in the table have to be in a defined order which must not be changed
Following value ranges are given for use in the CSV file, related to the manual HMI configuration of the arbitrary
generator (column headers named like in Excel):
Column Parameter
Range
A
AC start amplitude
0...50% U or I
B
AC end amplitude
0...50% U or I
C
Start frequency
0...10000 Hz
D
End frequency
0...10000 Hz
E
AC start angle
0...359°
F
DC start offset
0...(Nominal value of U or I) - AC start amplitude
G
DC end offset
0...(Nominal value of U or I) - AC end amplitude
H
Sequence point time in μs
100...36.000.000.000 (36 billion μs)
For details about the parameter and the arbitrary function refer to
„3.10.10. Arbitrary function“.
Example CSV:
The example shows that only the first two sequence points are configured, while all others are set to default
values. The table could be loaded as WAVE_U or WAVE_I when using, for example, the model PSI 9080-60 DT,
because the values would fit both, voltage and current. The file naming, however, is unique. A filter prevents you
from loading a WAVE_I file after you have selected “Arbitrary --> U” in the function generator menu. The file would
not be listed at all.
► How to load a sequence point table from an USB stick
1.
Do not plug the USB stick yet or remove it again.
2.
Access the function selection menu of the function generator with
MENU -> Function Generator -> Arbitrary -> U/I, to see the main screen
of the sequence selector, as depicted to the right.
3.
Tap touch area
, then
and follow the instructions
on screen. If at least one valid file has been detected (for file and path
), the device will show a list of files to select
from with
. Put the check mark next to desired file.
4.
Tap touch area
in the bottom right corner. The selected file is then checked and loaded, if valid.
In case it isn’t valid, the device will show an error message. Then the file must be corrected and the steps
repeated.
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