Specifications

Section 12. Memory and Data Storage
12-9
if “keep CF data”
keep CF data from overwritten program
if current program = overwritten program
keep CPU data
keep cache data
else
erase CPU data
erase cache data
end if
end if
if “erase CF data”
erase CF data from overwritten program
erase CPU data
erase cache data
end if
FIGURE 12.6-1. Summary of the Effect of CF Data Options
on CR1000 Data.
12.6.2 CF Power-up
Hard Knocks in a Real World
Uploading an OS or program in the field can be challenging, particularly
during weather extremes. Heat, cold, snow, rain, altitude, sand in your eyes,
distance to hike - all can influence how easily programming with a laptop or
palm PC may be. One alternative is to simply carry a light weight CF card into
the field, on which a program or OS is written. Inserting a properly configured
CF card into a CR1000 CF module (CF100 or NL115), then cycling CR1000
power, will result in the OS or program automatically uploading and running
without further input from the user. OS upload from a CF card is very fast.
CAUTION. Test this option in the lab before going to the field to make sure
you have it configured correctly. Carry your laptop or palm PC with you, but
with CF Power-up, you will be overjoyed when you don’t need to pull the
computer out.
Power-up functions of CompactFlash(R) cards can include
a) Sending programs to the CR1000
b) Setting attributes of CR1000 program files
c) Setting disposition of old CF files
d) Sending an OS to the CR1000
e) Formatting memory drives
f) Deleting data files