the card is removed, the size of the table in SRAM is shown. For more information, see File
system error codes (p. 161).
When a new program is compiled that sends data to the card, the data logger checks if a card is
present and if the card has adequate space for the data tables. If no card is present, or if space is
inadequate, the data logger will warn that the card is not being used. However, the CRBasic
program runs anyway and data is stored to SRAM. When a card is inserted later, data
accumulated in the SRAM table is copied to the card.
A microSD card can also facilitate the use of powerup.ini (see File management via powerup.ini
(p. 123) for more information).
5.5.1 Formatting microSD cards
The data logger accepts microSD cards formatted as FAT16 or FAT32; however, FAT32 is
recommended. Otherwise, some functionality, such as the ability to manage large numbers of
files (>254) is lost. The data logger formats memory cards as FAT32.
Because of the way the FAT32 card format works, you can avoid long data logger compile times
with a freshly formatted card by first formatting the new card on a computer, then copying a
small file to the card from the computer, and then deleting the file with the computer. When the
small file is copied to the card, the computer updates a sector on the card that allows the data
logger program to compile faster. This only needs to be done once when the card is formatted. If
you have the data logger update the card sector, the first data logger program compile with the
card can take up to 10 minutes. After that, compile times will be normal.
5.5.2 MicroSDī£card precautions
Observe the following precautions when using optional memory cards:
l Before removing a card from the data logger, disable the card by pressing the Eject button
and wait for the green LED. You then have 15 seconds to remove the card before normal
operations resume.
l Do not remove a memory card while the drive is active, or data corruption and damage to
the card may result.
l Prevent data loss by collecting data before sending a program. Sending a program to the
data logger often erases all data.
5.5.3 Act LED indicator
When the data logger is powered and a microSD card installed, the Act (Activity) LED will turn on
according to card activity or status:
5. Data memory 62
To Next Page
Loading...
