Prev Log File Button

The Prev Log File Button tool is used to provide a means for operators to view a previous alarm log file when the History category of alarms is being displayed in the alarm list.

By default, a single Alarms.log file is created in your application directory to store the last 100000 alarms and events that occurred in your system (including security-related operations and operator control actions). When this Alarms.log file becomes full, the oldest records are overwritten with the new records. However, a Config.ini variable called, "AlarmLogFreq" can be set in your application's Config.ini file to allow you to command your application to create separate alarm log files on a regular basis, rather than overwriting the oldest alarm and event records. You may choose to have VTS create a new alarm log file daily, weekly, or monthly, by setting AlarmLogFreq to "D", "W", or "M" respectively (please refer to "VTS Programmer's Guide: Config.ini [SYSTEM] Section Variables for Alarms" for further information).

The image below shows an example of the Prev Log File Btn Editor dialog as it appears when initially opened.

The result of the above configuration is a button labeled "<< Prev Log File" that can be clicked to view the previous alarm log file (if one exists).

The only user-configurable option is the selection of which of your custom alarm lists the button is to apply to.