Trane SYMBIO 700 Troubleshooting Manual page 109

Export Data Logs
This page will not be available on Units sold through the residential
channel.
The export data log functionality will create a CSV file each trend
and save it to the attached USB mass storage device.
Format is <Controller name>_trend_<name of point trended>.csv
When there is no USB device connected or an unsupported device
an error message will occur.
Depending on the size and number of trends this can a few
minutes
.
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