Sutron 8310 - Page 130

Sutron Corporation 8310 & 7310 Users Manual 8800-1125Rev. 2.7 (BETA) 4/16/2014 pg. 130
Logs (2)
system.log ►
data.log ►
Add Log
Delete Log
End Logs
Add Log
When adding a log, the system prompts for the Location, Name, and Size properties, as well as
the “Wrap data when full” and “Ignore bad data” properties. See the following section for
descriptions of these properties.
When selecting the Location to store a log, you’ll normally select \Flash Disk. However, if you
have an SD card inserted, the system will allow you to select the location “\SD Card\”. When
creating a log on an SD card, be sure to leave the card inserted during normal operation.
When entering the Name of the log, you don’t need to add an extension, as the system will do
that for you.
See Station Setup/Logs/Log Details (below) for information on the remaining properties.
Delete Log
When you select Delete Log, the system will prompt to make sure you really want to delete the
log. This is because there is no way to retrieve the data stored in a log once it has been deleted.
Use with extreme caution.
Station Setup/Logs/Log Details
Selecting a log under the Station Setup/Logs menu and pressing RIGHT brings up a menu
showing the properties of the highlighted log, as shown below.
data.log
Log Size: 1000064 bytes
Wrap log when full? Yes
Ignore bad data? No
Header on export? Yes
Bad data value? Yes
Value for bad data: -99999
Add note to log
End data.log
Log Size
This property shows the size of the log. You can resize a log by changing its Log Size property. If
you make the size smaller, you will lose some of the data in the log.
Each logged data point takes 10 to 15 bytes of memory. Hence, a log file 60,000 bytes in size will
hold between 4000 and 6000 data points, or between 1.5 and 2 months of a single sensor
measurement, made every 15 minutes. Be careful about making logs too large, as this can slow
system performance, particularly where searching or exporting the log is involved.