Using File to Save Logged Data

The software allows you to save logged data in CSV/TXT/LDF files and view the data later. Hence, the size of the battery backed RAM or the buffer sizes of the data loggers will not limit the size of the historical data you want to collect.

There are three ways to write the logged data of a data logger to a CSV/TXT/LDF file:

1. You can use a function button to perform “Save Logged Data (.ldf file)” or "Save Logged Data To File". The button writes all the logged data of the specified data logged to a file.

2. You can use the Command Block to request this operation.

3. You can configure a data logger to write its collected data to a file automatically with preset time intervals.

To view the logged data of a file, you need to load the data of that file into a data logger first. A data logger is able to receive the data from a file only when:

1. The definitions of the data items of the file and the data logger are identical, and

2. The number of samples of the file is not greater than the number of samples of the data logger.

The following is an example of data logging and loading:

The data logger #2 saves the logged data to temp_logged_YYMMDD.ldf in every hour.

The data logger #1 with Passive sampling method is able to receive the data from the file.

You can use the function button to load the logged data from temp_logged_130624.ldf and save it to the passive data logger #1.