Name Type Values (Range) Unit Description
NonIPPackRecNorm INTEGER - - Number of non IP packets
received in normal mode
NonIPPackRecPoll INTEGER - - Number of non IP packets
received in polled mode
NonIPPackDisc INTEGER - - Number of non IP packets
discarded
15.14.4 Operation principle
The Denial of service functions (DOSLAN1 and DOSFRNT) measures the IED load
from communication and, if necessary, limit it for not jeopardizing the IEDs control
and protection functionality due to high CPU load. The function has the following outputs:
• LINKUP indicates the Ethernet link status
• WARNING indicates that communication (frame rate) is higher than normal
• ALARM indicates that the IED limits communication
Section 15 1MRK 505 277-UUS C
Basic IED functions
416
Technical Manual
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