Datasheet

25
Manual
PC208W Datalogger Support Software
Dump Pointer: The Dump Pointer is an internal pointer used for keeping track of the current ‘start-of-dump’ for
module-to-module data dumps. It indicates the first location from where new data should be collected. It is a function
of the software to move this pointer after each successful data collection. Or it is the final storage location up to
which data has been downloaded to the storage module in previous dump sessions and consequently represents the
location from where data transfer will start in the default situation.
Especially the Display Pointer is useful if data is lost or corrupted during processing on PC. By manually setting
back the Display Pointer (see above and the on-line help for the appropriate instructions), data files can be
re-retrieved and re-processed, provided they still exist on the SM4M Storage Module.
5.2.5 Erasing Data on the Storage Module
The user can decide to erase the information stored on the SM192. This applies both to data files and datalogger
programs. However, since the storage module is put by default in ring mode, there is no need to erase data at any
time. The moment the module is full, it starts overwriting the eldest information in the unit with new one, in this way
never restricting ‘new’ information to be recorded.
If the user would decide that periodic cleaning of the storage module serves his or her purposes, for example to
avoid confusion between two different field visits, the below text presents instructions how to do this.
To activate the Erase Control screen, click the “Erase” tab at the bottom-left of the SMS Window. The below
presented screen will appear.
The Erase Control box contains three different options, each having self-explanatory names. Since it is advised to
leave an uncorrupted version of the applicable datalogger program at all times in program location 8 of the storage
module, the recommended option is number 1: Erase Data. No further user interactions are required.