It automaticly determines the name of the Logfiles.
You need to extract the attached zip and enable the execution of scripts in your powershell enviroment.
I have tested it with my fr920xt, if someone can please test it with other watches.
e.g:
PS C:\Home\> .\ciqapplogs.ps1 -list HRV -print
GARMIN Drive <I:\>
Program File <A6227C9B.PRG>
Verzeichnis: I:\GARMIN\APPS\LOGS
Mode LastWriteTime Length Name
---- ------------- ------ ----
-a---- 30.06.2017 07:46 2 A6227C9B.TXT
=====BEGIN====
======END=====
ciqapplogs.zip