Sensaphone SCADA 3000 Users manual - Manual (Page 107)

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Chapter 11: Programming for Phone Line Applications
4) As you begin to acquire more and more data in the datalogger database, the soft-
ware will start to take longer to perform a query.
Data Logger Start Time
You may program the Data Logger to start at a specific time to keep the data on a fixed
time schedule. For example, if you want to log data every minute, you could enter a start
time of 12:00:00PM and all of the time stamps would occur on the exact minute, starting at
12:00:00PM. To have the Data Logger start at a specific time, enter the time in the Next Log
box. Note that for the start time in the Next Log box to work correctly, the time must be
ahead of what the system time indicates. For this reason, the system time is provided just above
the Next Log programming box. After you have set the time in the Next Log box, click the
Enable Data Logger box. As soon as the System Time matches the Next Log time, the data
Logger will start.
If you do not enter a time in the Next Log box, you may simply click the “Enable Data
Logger” box. This will start the Data Logger immediately.
Stopping the Data Logger
To stop the Data Logger, click the “Enable Data Logger” button to remove the check mark.
This will stop the Data Logger from writing any new data.
Resetting the Data Logger
The Data Logger has two reset options: 1) reset all of the data, and 2) reset only the old data.
When you click the Reset All button, all of the data in the SCADA 3000 will be deleted and the
Records Used will return to 0. When you click the Reset Old button, only data that has been
downloaded previously will be deleted. Therefore any data that has not been downloaded yet
will remain in the unit. The Records Used parameter will reflect the number of records remain-
ing in the unit. Clicking the Reset Old button before downloading the Data Logger can be used
to reduce the download time. If multiple users will be downloading data from the Data Logger,
care must be taken to delete records ONLY after all users have downloaded or to instruct all
users never to delete the Data Logger.
Downloading the Data Logger
To get the Data Logger information from the SCADA 3000 to your computer you must down-
load it. This procedure retrieves the data from the SCADA 3000 and stores it in a database
on your hard drive. To avoid overwriting data in the SCADA 3000 you must always download
the data before the number of available records gets to zero. To download the Data Logger
click on the Download button on the lower left part of the form. When all of the data has been
downloaded the SCADA 3000 software will update the database and provide some statistical
information regarding the download process. You may choose to view the data at this time or
click OK to return to the datalogging form. The Datalog download form follows:
Figure 18: Datalog Download status
Viewing the Data
To view Data Logger data, click on the View Data button on the lower left part of the Data
Log form or from the Download form. Select one or more SCADA 3000 units whose data you
want to view. To select more than one unit, drag the mouse over the list or hold the control