7.5.6 Rate of change of frequency PFRC7.5.6.1 Rate-of-change frequency protection SAPFRCLN type LN prefix LN class Function block nameSAPFRC (revision 1) SA PFRC SAPFRCTable 60:SAPFRC Logical node dataDO name DO type DA name FC T Signal Mon/CmdDescriptionMod a_dINC Oper.ctlVal CO - Mod Cmd Mode parameterOper.origin.orCat CO - Mod Cmd Mode parameterOper.origin.orIdent CO - Mod Cmd Mode parameterOper.ctlNum CO - Mod Cmd Mode parameterOper.T CO - Mod Cmd Mode parameterOper.Test CO - Mod Cmd Mode parameterOper.Check CO - Mod Cmd Mode parameterstVal ST - - Mon Mode status parameter for 61850q ST - - Mon Quality: Mode status parameter for61850t ST - - Mon Timestamp: Mode statusparameter for 61850Beh a_dINS stVal ST - Beh Mon Behaviour parameter for 61850q ST - Beh Mon Quality: Behaviour parameter for61850t ST - Beh Mon Timestamp: Behaviour parameterfor 61850Str b_dACD general ST - START Mon Start/pick-up signal for frequencygradientq ST - START Mon Quality: Start/pick-up signal forfrequency gradientt ST - START Mon Timestamp: Start/pick-up signalfor frequency gradientOp b_dACT general ST T TRIP Mon Operate/trip signal for frequencygradientq ST T TRIP Mon Quality: Operate/trip signal forfrequency gradientt ST T TRIP Mon Timestamp: Operate/trip signal forfrequency gradientBlkLoMg v1_dSPS stVal ST - BLKDMAGN Mon Blocking indication due to lowamplitudeq ST - BLKDMAGN Mon Quality: Blocking indication due tolow amplitudet ST - BLKDMAGN Mon Timestamp: Blocking indicationdue to low amplitudeTable continues on next pageSection 7 1MRK 511 349-UEN -Logical node data model152 670 series 2.1 IECCommunication protocol manual