5.2              Alarm Log

This is a record of the last 5000 Alarms and when they were acknowledged. This can be logged to a printer and to a central database.  The last 5000 Alarms and acknowledgements are recorded to the local hard drive. The Central ODBC Alarm Log is never erased.

Figure 5.4 - Alarm Log

Only Power Users and the admin account can view the Alarm Log through a Web Browser. (General Users and Restricted users cannot view the Alarm Log through a Web Browser). All users can view the Alarm Log locally on the SCADA node using ViewDAQ.


There are at least four ways to View the Alarm Log:

·         Select the Alarm Log button  from the Standard Toolbar (Figure 3.5)


·         Use the Navigation Popup Menu (Figure 3.2) in a web browser VIEW:

Right Click -> Goto -> Alarm Log


·         Use the menu bar in ViewDAQ: Right Click -> Goto -> Alarm Log



·         Click a Pushbutton on a user built graphic with the <GOTO>ALARMLOG or <CTL_F8> keymacro


·         Press Ctrl + F8 keys on your keyboard



Optionally, you can also Alarm Log to Printer.  As each alarm occurs, a line is printed on the printer. (Three lines are printed for a Text Type tag in Alarm). Acknowledgement by the operator or user is also recorded.  See Alarm Logging To Printer, in the Engineering Manual for more information.


The last 10,000 alarms are shown on the Alarm Log Display.  The last 5000 are written to the Text file on the hard drive of the SCADA node. When the 5001 alarm occurs, the oldest alarm entry is overwritten in the text file.   Similarly, when the 10,001th alarm occurs, the oldest alarm in the Alarm Log Display is over-written.  Restarting the SCADA node or a Client empties the Alarm Log, which is then refreshed with the last 5000 alarms logged to the Hard Drive.


If you need more than the last 10,000 alarms recorded to hard drive, optionally, you can record the Alarm Log to an ODBC Database.  As part of software installation, WebAccess creates an Access Database on the Project Node. All Alarms can be recorded to the Database from all SCADA nodes in your system to provide a centralized Alarm Log. See Alarm Logging To ODBC Database for more information.


The Alarm Log is a pre-built template display supplied with Web Access. It can be customized by engineers and technicians using DRAW.  How your Alarm Log appears (colors, Fonts, etc.) and behaves may vary based on how (or if) the Almlog.Bxx (and Almlog.dxx) on your system is modified.