5.4              Action Log

The Action Log monitors local actions on the SCADA node including: Changes to the Value of Tags by users, Login, Logout, Recipe Downloads, connections to ODBC databases.  The Action Log monitors runtime actions by users in VIEW. Combined with the Alarm Log and the System Log, it allows you to monitor user actions on your control system.

Figure 5.10 Action Log - lists Operator Actions: setpoint changes, logins, etc.

Each time a change is made to the Value of a Tag, an entry is made in the Action Log showing Tagname, Old Value, New Value with time stamp.  Three entries are made for Text-type Tags (Tagname on 1st line, old value on 2nd line and new value on 3rd line).

The Action Log Display can be viewed from
the  button on the standard Toolbar

Or Ctrl+F9 function key

Or a pushbutton with the <GOTO>ACTIONLOG keymacro.

Or, the Right-Click Menu (in a web browser VIEW)
Right Click -> Goto -> Action Log

Or from the menubar in ViewDAQ: Goto -> Action Log

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

Optionally, you can also print the Action Log to Printer continuously.  As each Action occurs, a line is printed on the printer. (Three lines are printed for a Text Type tag in Action).

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

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

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


Printing the Action Log is similar procedure to printing the Alarm Log.

The default configuration copy and paste the LOG to Notepad.exe (a standard component in Microsoft Windows).  A Window will pop-up with the Notepad program running.  The user can then either save this to disk or print to a printer.

Note - An engineer or technician may have configured your system to print directly to your default printer (the default printer on the Client Web browser PC).