# Question about the fields in DataLog files

**URL:** <https://opensourceleg.discourse.group/t/question-about-the-fields-in-datalog-files/178>\
**Category:** Software\
**Created:** [January 15, 2026, 8:29pm UTC](https://opensourceleg.discourse.group/t/question-about-the-fields-in-datalog-files/178 "2026-01-15T20:29:36Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![malizade](https://avatars.discourse-cdn.com/v4/letter/m/8baadc/32.png) [@malizade](https://opensourceleg.discourse.group/u/malizade)\
**Post date:** [January 15, 2026, 8:29pm UTC](https://opensourceleg.discourse.group/t/question-about-the-fields-in-datalog-files/178/1 "2026-01-15T20:29:36Z")

</div>

Hi. When running the example codes in the dephy folder, measurements related to the motor are also recorded in the DataLog folder. A few questions:

1- What is sys\_time?

2- What is state\_time?

3- Is it possible to retrieve the voltage command in the inner loop of the motor? The closest thing I could find is the Q-axis voltage measurement (motor\_volt) but I believe this also includes the back EMF.