Data Logger

This chapter describes how to set up data loggers for your application to collect data, and how to configure the historic display objects to display the collected data.

A data logger can collect and store the values of a data block. You can specify what data block you want to log, determine the frequency of data sampling, choose the type of memory to save the logged data, and specify how to save the logged data to files.
You can create up to 16 data loggers for your application. The maximum size of the data block that can be sampled by a data logger is 1023 words.

You can use the function button to request the panel to clear logged data, or save/load logged data (.ldf/.csv/.txt file).
To know how to define a function button, please see Section 5.4.1 Basic Operations of function buttons.

To create a data logger, you may do one of the following:
1) In the Project Manager tool window, right-click the Data Loggers node ( ) of the concerned panel application and select Add Data Logger.
2) In the menu bar, click Panel to bring up the Panel sub-menu. Click Data Logger in the Panel sub-menu to bring up the Data Logger pop-up menu. Select Add in the pop-up menu.

Note: A typical application might have over 32MB of memory space for the data logging. But there are too many factors affecting the exactly memory size that is available for the data loggers. So please rely on the compilation result. It will let you know when the memory is insufficient. And once the application passes the compilation, the memory space for the storage is guaranteed.