8.4 Watchdog Timer (WDT) / Watchdog Output Operation
The WDT, when enabled, operates from the internal Low-Power RC (LPRC) Oscillator clock source.
The WDT can be used to detect system software malfunctions by resetting the device if the WDT is
not cleared periodically in software. If malfunctioning of device persists even after watchdog reset
device will go into shutdown mode followed by error messages on display as per Table 33. Device
Fault can be monitored by a failsafe relay output which is mapped for watchdog output.
When WDT is disable device will continue to work with fault. The Fault LED will be on in this condition.
Table 33 Error Messages and its Description
Watchdog Relay / Open Collector: This relay/Open Collector is normally in ON condition
and it will be OFF when any problem occurs with Device.
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