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You can check that the 8061FLD file has been created by accessing the
ftp server using Windows Explorer. Open the station folder (the name is
its serial number).
8061FLD.txt file contains information related to the next data the station
should download when accessing the ftp server:
The above picture shows the content of 8061FLD file. After reading this file
the station will download data starting from the 28
th
December 2020 at 18:06.
Last information, "---"in this case, shows how many records have to be
downloaded.
"---" means "up to now" so: all data that have been acquired since the 28
th
December 2020 at 18:06.
A different information, let's say "80" instead of "---" means 80 records.
In which case the time period depends on the storing rate that have been set
for this station.
If the storing rate was 6min, 80 records means 6 x 80 minutes = 480 minutes
that means 8 hours:
th
Downloaded data will be: "Since" December 28
at 18:06 "Up to" December
th
29
at 02:06.
It is usual to set any monitoring station to download data "Since last
time" – "Up to now" so that everytime the station accesses the server, it
downloads all data that have been acquired since the last access to the
ftp server.
In case, due to some special need, a specific time period should be
downloaded by setting the parameters "Retrieve Data From –
Date&Time / Up to – Date&Time", continuity of data to be downloaded
later cannot be resolved automatically and a gap will be shown since
last data already downloaded up to the time of next connection.
After downloading, the requested specific time period the parameter
"Up to" will be automatically set to "Now".
The parameter "Retrieve Data From – Date&Time" should be then set
manually to recover data not downloaded automatically.
4-36
Point to Point and FTP Communication
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