Name Type Values (Range) Unit DescriptionIPPackRecPoll INTEGER - - Number of IP packetsreceived in polled modeIPPackDisc INTEGER - - Number of IP packetsdiscardedNonIPPackRecNorm INTEGER - - Number of non IPpackets received innormal modeNonIPPackRecPoll INTEGER - - Number of non IPpackets received inpolled modeNonIPPackDisc INTEGER - - Number of non IPpackets discarded16.15.4 Operation principleThe Denial of service functions (DOSLAN1 and DOSFRNT) measures the IEDload from communication and, if necessary, limit it for not jeopardizing the IEDscontrol and protection functionality due to high CPU load. The function has thefollowing outputs:• LINKUP indicates the Ethernet link status• WARNING indicates that communication (frame rate) is higher than normal• ALARM indicates that the IED limits communicationSection 16 1MRK 502 034-UEN -Basic IED functions518Technical Manual
