38
USB Stick as a Data Logger and for Updating Invert-
er Software
USB stick as a da-
talogger
If a USB stick is connected to the USB A socket it can function as a datalogger for an in-
verter.
At any time, the logging data stored on the USB stick can be
- imported into the Fronius Solar.access software using the FLD file that was logged at 
the same time,
- viewed directly in third-party programs (e.g. Microsoft® Excel) using the CSV file 
logged at the same time.
Older versions (before Excel 2007) are limited to a maximum of 65,536 rows.
Suitable USB 
flash drives
Due to the variety of USB flash drives available on the market, it cannot be guaranteed that 
every USB flash drive will be detected by the inverter.
Fronius recommends that only certified USB flash drives suitable for building sites are used 
(look out for the USB-IF logo).
The inverter supports USB flash drives with the following file systems:
- FAT12
- FAT16
- FAT32
Fronius recommends that the USB flash drives employed should only be used for record-
ing logging data or updating the inverter software. The USB flash drives should not contain 
any other data.
Further information on "Data on a USB stick", "Data volume and storage capacity" as well 
as "Buffer memory" can be found at:
  http://www.fronius.com/QR-link/4204260171EN