In my cr1000 in one station:
In Connect screen in table monitor: Status, I see
Memoryfree: 39832 bytes
But in Filecontrol:
Device CPU Bytes Free: 442.88kb
Why they are differents?
Memoryfree is the amount of unallocated RAM. If you have any autoallocated data tables, expect the value to similar to what you see.
The CPU drive is a flash memory chip for program storage.
Thank you
what about the USR drive?
The USR drive is 0 bytes by default. You can divide part of the RAM in the datalogger to use as the USR (user) drive. That is generally only needed if connecting a camera to the datalogger, or using the TableFile instruction.