watchdog for IEC61850 device

Hi Mark!:):)
How can I create a watchdog for an IEC61850 device? I need to show it in the screen if the device is healthy or faulty?
Will I create a system variable for this one?
Thanks!

This is a migrated post! Originally posted on 03.12.2009 by user hoscillada. Please be aware that information can be outdated.