17.16.3.3 SignalsTable 528:DOSLAN1 Output signalsName Type DescriptionLINKUP BOOLEAN Ethernet link statusWARNING BOOLEAN Frame rate is higher than normal stateALARM BOOLEAN Frame rate is higher than throttle state17.16.3.4 SettingsThe function does not have any parameters available in the local HMI or PCM600.17.16.3.5 Monitored dataTable 529:DOSLAN1 Monitored dataName Type Values (Range) Unit DescriptionState INTEGER 0=Off1=Normal2=Throttle3=DiscardLow4=DiscardAll5=StopPoll- Frame rate control stateQuota INTEGER - % Quota level in percent 0-100IPPackRecNorm INTEGER - - Number of IP packetsreceived in normal modeIPPackRecPoll INTEGER - - Number of IP packetsreceived in polled modeIPPackDisc INTEGER - - Number of IP packetsdiscardedNonIPPackRecNorm INTEGER - - Number of non IP packetsreceived in normal modeNonIPPackRecPoll INTEGER - - Number of non IP packetsreceived in polled modeNonIPPackDisc INTEGER - - Number of non IP packetsdiscarded17.16.4 Operation principleThe Denial of service functions (DOSLAN1 and DOSFRNT) measures the IED load fromcommunication and, if necessary, limit it for not jeopardizing the IEDs control andprotection functionality due to high CPU load. The function has the following outputs:Section 17 1MRK 502 048-UUS ABasic IED functions706Technical manual
