Unique Broadband Systems Ltd. DRU2KW Manual De Usuario

Manual No. x75mk3-11

x75-man-Rev11-0815.indd

administrator password is necessary for this change.

The label on the top right will update to show how long the log will run before 

beginning to overwrite the earliest entry.

To display stored data, choose the start date/time of the period of interest using the 

date spinner box (upper left in the graph control section).  Then select a time span 

from the upper right (choices are 1hr, 12 hrs, 24hr, 7 days, 30 days).

Next choose which parameter you would like to examine using the parameter 

combo-box.

Finally, to display the data, click the REFRESH button at the bottom.  This will also 

load the latest data from the controller at this time.  If no data is available the graph 

will be blank.

The data in the controller is only saved to permanent memory once every hour.  This 

is because the permanent store is based on flash memory.  Saving more often would 

shorten the flash memory’s life, particularly for the more frequent logging times.

This means that under some circumstances (e.g. loss of power) recent data can be 

lost as it is only in volatile memory.  To force a save of the data to the permanent 

store, click the FORCE SAVE button.

The controller will take steps to save data if it is aware of a pending power down.  

It will also save the data in the permanent store before it opens the LVD, which is 

the most common way that the controller will lose power.

A log entry always overwrites the oldest data.

The controller scans the data log at start up to work out the correct place in the log 

to start writing.

If desired the data log can be completely erased.  This might be useful after 

commissioning or testing where the data is no longer needed.  This can be 

accomplished by clicking the CLEAR HISTORY button.

Log data is stored in 10 files in the file system in the html directory.  The files are 

named dataLogN.dat  where N is a digit from 0 to 9.  These files can be retrieved using 

FTP.  It is not recommended to delete these files using FTP.  The file is formatted in 

32 byte blocks.  The format of each block is as follows: