Data Memory; Data Tables - Campbell CR300 Series Product Manual

17. Data memory

The data logger includes three types of memory: RAM, Flash, and Serial Flash.
CPU Drive: 80 MB serial flash
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Data Storage: 30 MB serial flash
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Operating System: 2 MB flash
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Settings, Calibration, TLS Certificates and Key, System Information: 3 MB serial flash
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Background Tasks and Table Information, Buffers, System Memory, Program Variables:
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756 KB RAM

17.1 Data tables

Measurement data is primarily stored in data tables within serial flash. Data is usually erased from
this area when a program is sent to the data logger. Final-data memory for the CR300 series is
organized in 4 KB sectors. Each sector is rated for 100,000 serial flash erases.
During data table initialization, memory sectors are assigned to each data table according to the
parameters set in the program. Program options that affect the allocation of memory include the
Size parameter of the
DataInterval()
the
way that maximizes the life of its memory. See the CRBasic Editor help for detailed instruction
information and program examples:
By default, data memory sectors are organized as ring memory. When the ring is full, oldest data
is overwritten by newest data. Using the
the data table when it is full, and no more data is stored until the table is reset. To see the total
number of records that can be stored before the oldest data is overwritten, or to reset tables, go
to Station Status > Table Fill Times in your data logger support software.
Data concerning the data logger memory are posted in the Status and DataTableInfo tables. For
additional information on these tables, see
For additional information on data logger memory, visit the Campbell Scientific blog
to Know when Your Datalogger Memory is Getting Full
DataTable() instruction, the Interval and Units parameters of
instruction. The data logger uses those parameters to assign sectors in a
https://help.campbellsci.com/crbasic/cr300/
FillStop
Information tables and settings
statement sets a program to stop writing to
.
.
(advanced) (p. 202).
article, How
17. Data memory 88