User manual

Doc-ID: EAPCEN Page 12
Date: 16.12.2015
8. App „SeqLog“ (Sequencing and Logging)
Figure 8
A very important feature of EA Power Control is the ability to process sequence files (here: Sequencing) and to record
device data (here: Logging). A sequence is a set of rows with set values and a time x, which are stored in a text file of
type CSV (values separated by semicolon, not comma, due to Excel using the comma as decimal separator in most
european countries).
The software reads these sequence files row by row and send the values and status from the currently processed row
to the device, then waits for a certain time to achieve the period until the next step is processed. The period range is
quite big with 500 ms…99 h:59 m:59 s (step width: 100 ms).
Logging works similar, but vice versa. In selectable intervals (same definition as for sequencing), the software reads
actual values and statuses from the device and writes them step by step into a log file (text file, CSV format). The total
recording time and number of recorded entries is limited to a max. number of continuous log files of 1000.
Important! Sequencing of EA Power Control is different to what you can do with the sequences of the arbitrary
generator as featured in series ELR 9000 and PSI 9000s. Sequence file processing always sends the next values
as entered in the sequence file and thus the device cannot generate ramps to have a linear rise or fall between
two set values.
Logging and sequencing are configured in the “Options” window, which can be accessed from the “SeqLog” app window.
For both features it is required to select a separate file for EA Power Control to work with. Both, the sequencing and
the logging file, are also set separately for every unit used with sequencing & logging. It is not possible to record data of
multiple devices into one log file.
The log file doesn’t contain information to uniquely identify for what device it was created. Thus it is very important to
use file names which clearly assign a file to a device, perhaps by including the same user text in the file name.
For Sequencing you have to select an existing sequence file, which is checked for validity after every selection. The
sequence file format is defined (see below) and shown by an example file which is included in the installation and which
is the default sequence file when opening the SeqLog app the first time. Sequence file in arbitrary number can be created
outside of EA Power Control, with popular tools like Excel, other CSV tools or even text editors.