Specifications

Section 12. Memory and Data Storage
12-2
TABLE 10-1. CR1000 Memory Allocation
NOTE: As of September 2007, all new CR1000s have 4 MB SRAM.
Internal Flash
EEPROM SRAM 2 or 4 MB
Device Configuration
Settings Backup
~ 1K
“CPU” Drive for files
~ 98K
Internal Serial Flash
128K or 512K
See Table 10-2.
A backup of all the Device Configuration Settings, such
as PakBus Address, Station Name, Beacon Intervals,
Neighbor lists, etc., rebuilt approximately every hour.
Serial flash is slower, but adequate for storing files.
When a program is compiled and run in SRAM, a copy
is also put here to be loaded on subsequent power-up.
Users can also store files, including program files, here
for future use. Shows up as “CPU:” in LoggerNet’s File
Control screen. Status Table field - CPUDriveFree
CRD: Drive resides on a Compact Flash (CF) card used
in an optional accessory CF module, which attaches to
the peripheral port. Cards should be industrial grade
and not exceed 2 Gbytes. If the DataTable declarations
in the CR1000 program use the CardOut instruction,
final storage data can also be stored to the CF card. The
CR1000 provides data first from internal CPU memory
and if additional records are needed (that have been
overwritten in CPU, the CR1000 sends it from the CF
card. Data as files can also be retrieved from the CF
card with the File Control utility, in which case it is
saved on the PC as a file in a binary format that must be
converted using CardConvert software.
Notes
External Compact
Flash (Variable size)
“CRD” Drive for files