User Manual
Page 66
ELR 9000 Series
www.elektroautomatik.de
ea1974@elektroautomatik.de
EA Elektro-Automatik GmbH
Helmholtzstr. 31-33 • 41747 Viersen
Germany
Fon: +49 2162 / 3785-0
Fax: +49 2162 / 16230
Uploading of a table from a USB ash drive must use text les (.csv). Plausibility is checked on
loading (values not too high, number of values correct),and possible errors reported in which
case the table will not be loaded.
The 4096 values in the table are only checked for size and number. If all the values were to
be graphically plotted a curve would be created which could include signicant step changes
in current or voltage. That could lead to complications in the loading of the source if, e.g., the
internal voltage measurement in the electronic load swings slightly so that the load jumps
backwards and forwards between two values in the table, which, in the worst case, could be
0A and the maximum current.
3.8.12.1 Loading UI and IU tables from USB drive
The so-called UI / IU function generator requires to load tables from a com-
mon FAT32 formatted USB drive via the front side USB port. The les are
required to have a certain format and to meet following specications:
• The les names must always begin with IU or UI (not case-sensitive),
depending on the target function you want to load the table to
• The le must be a text le of type Excel CSV (semicolon as separator) and
must only contain one column with values
• The number of values in the table must be exactly 4096 and there must
be no gaps
• None of values may exceed the related maximum value of the device. For example if you have a 80V model you
are going to load the table for the UI function, it is assumed that all the values in the table are for voltage and
thus must not be bigger than 80 (the adjustment limits of the device are not in effect here)
• Values with decimal places must use the comma as decimal separator
• The les must be stored inside a folder called HMI_FILES with has to be in the root of the USB drive
If the le naming, path and le content specications are not met, the le is either not recognized at all or rejected.
So it is, for example, impossible to load a UI table (le name starts with UI) for the IU function and vice versa. The
USB drive may contain multiple les of which up to 10 are listed as a selection before loading.
► How to load a UI or IU table from USB ash drive:
1. Do not plug the USB drive yet or remove it.
2. Access the function selection menu of the function generator with MENU -> Function Generator -> UI-IU
3. In the next screen, either select “UI Table” or “IU Table”.
4. In the next screen you may also congure additional limits for U, I and P.
5. Tap on touch are and plug the USB drive when upon request. The device will try to read the ash
drive and to nd compatible les, which are then listed for selection. Select the desired le.
6. In case the le is not accepted because it does not meet the specications, the device will report an error
and reject the le. Correct the le or le name and repeat the above steps.
7. Once the le/table is successfully loaded, you are requested to remove the USB drive.
8. Load the function with , in order to start and operate the feature as described in „3.8.4.1. Func-
tion selection and control“.
3.8.13 Remote control of the function generator
The function generator can be remotely controlled but conguration and control of the functions with individual
commands is different from manual operation. The external documentation “programming guide ModBus & SCPI”
explains the approach. In general the following apply:
• The function generator is not controllable via the analog interface
• The function generator is unavailable if the device is in master-slave or in R/I mode
• All functions are based on the arbitrary generator and therefore, only this is available for remote control