Xylem DH-21 - Manual (Page 101)

DH-21
Using the Graphical “W ATER LOG” Software 4-55
The options that are saved are listed below.
Logging modes.
Conversion options
User notes
View graph options
The setup files will automatically have a .WSF extension appended to them. The WSF stands for
“
W
ATER LOG” Setup File. When retrieving a setup file, all *.WSF files in the selected directory
will be displayed.
There is also a setup file saved every time the program is exited. This file is called
WATERLOG.WSF and will be retrieved when the program is started again. This allows an
interrupted session to be continued easily.
It is important to understand the operation of the software when the sensor is “attached” to the
PC. Two steps are required to “attach” the sensor to the PC. First is the physical connection and
second is the software connection. The physical connection consists of using a cable to connect
the PC and sensor together. The software connection is done by using the “Attach” option. This
sets up the software for communicating with the sensor. When the sensor is NOT attached, the
software will work in a stand-alone mode allowing editing of the options that can be saved to and
retrieved from a file. When the sensor is attached, all options are valid.
It is important to understand what happens when attaching to a sensor. When attaching to a
sensor, the information in the sensor will be loaded into the “
W
ATER LOG” software, showing
the state of the sensor. Any setups in the “ W ATER LOG” software will be overwritten and lost.
To prevent the loss of setups that are important, use the “File Save” option to save the setups
before attaching to the sensor. To load setups that are saved as a disk file to the sensor, the sensor
must first be attached and then the setup file retrieved. In this case, the retrieved setup file
information will update the “
W ATER LOG” software and will be sent to the attached sensor.
If a sensor is connected to the PC when the program is started, the WATERLOG.WSF is loaded,
but the software will automatically attempt to attach to a sensor. If a sensor is “Attached”, the
information in it will overwrite the information loaded from the WATERLOG.WSF file (See
section 4.4.13 for information on the Attach Option).