Campbell Scientific LoggerNet Datalogger Support Software - Manual (Page 167)

Section 5. Real-Time Tools
CR1000/CR3000/CR800 Series Datalogger Run Now Options
When Run Now is checked, the program is compiled and run in the
datalogger. You may choose to preserve existing data tables on the
datalogger’s CPU if there has been no change to the data tables
( Preserve data if no table changed) or to delete data tables on the
CPU that have the same name as tables declared in the new program
( Delete associated data tables).
Neither of these options affects existing data files on a card
if one is being used. If a data table exists on the card that
has the same name as one being output with the new
program, the message will be returned “Data on Card is from
a different program or corrupted”. Data will not be written to
the card until the existing table is deleted. Data tables on
the card that have different names than those declared in
the new program will be maintained and will not affect card
data storage when the new program is running.
When using the Preserve data if no table changed option, existing
data and data table structures are retained unless one of the following
occurs:
• Data table name(s) change
• Data interval or offset change
• Number of fields per record change
• Number of bytes per field change
• Number of records per table (table size) change
• Field type, size, name, or position change
CAUTION
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