3.16.11.3 L/R control accessFour different Local/Remote control access scenarios are possible depending on theselected station authority level: “L,R”, “L,R,L+R”, “L,S,R” and “L, S, S+R, L+S, L+S+R”. If control commands need to be allowed from multiple levels, multilevelaccess can be used. Multilevel access is possible only by using the station authoritylevels “L,R,L+R” and “L, S, S+R, L+S, L+S+R”. Multilevel access status is availablefrom IEC 61850 data object CTRL.LLN0.MltLev.Control access selection is made with R/L button or CONTROL function block andIEC 61850 data object CTRL.LLN0.LocSta. When writing CTRL.LLN0.LocSta IEC61850 data object, IEC 61850 command originator category station must be used bythe client, and remote IEC 61850 control access must be allowed by the relay stationauthority. CTRL.LLN0.LocSta data object value is retained in the nonvolatilememory. The present control status can be monitored in the HMI or PCM600 viaMonitoring/Control command with the LR state parameter or from the IEC 61850data object CTRL.LLN0. LocKeyHMI.IEC 61850 command originator category is always set by the IEC 61850 client. Therelay supports station and remote IEC 61850 command originator categories,depending on the selected station authority level.3.16.11.4 Station authority level “L,R”Relay's default station authority level is “L,R”. In this scenario only local or remotecontrol access is allowed. Control access with IEC 61850 command originatorcategory station is interpreted as remote access. There is no multilevel access.IEC 61850remoteIEDIEC 61850remoteREMOTE LOCAL OFFIEC 61850remoteIEDIEC 61850remoteIEC 61850remoteIEC 61850remoteIEDGUID-08BACCE4-AF4A-4150-A01A-49FBEE63B438 V1 ENFigure 98: Station authority is “L,R”When station authority level “L,R” is used, control access can be selected using R/Lbutton or CONTROL function block. IEC 61850 data object CTRL.LLN0.LocSta andCONTROL function block inputs CTRL_STA and CTRL_ALL are not applicable forthis station authority level.Section 3 1MRS758755 ABasic functions154 REC615 and RER615Technical Manual
