ABB RELION SMU615 Technical Manual page 113

1MRS758407 C
and "L, S, S+R, L+S, L+S+R". Multilevel access status is available from IEC 61850 data
object CTRL.LLN0.MltLev.
Control access selection is made with CONTROL function block and IEC 61850 data
object CTRL.LLN0.LocSta. When writing CTRL.LLN0.LocSta IEC 61850 data object,
IEC 61850 command originator category station must be used by the client, and
remote IEC 61850 control access must be allowed by the merging unit station
authority. CTRL.LLN0.LocSta data object value is retained in the nonvolatile memory.
The present control status can be monitored in the HMI or PCM600 via Monitoring >
Control command with the
CTRL.LLN0. LocKeyHMI.
IEC 61850 command originator category is always set by the IEC 61850 client.
The merging unit supports station and remote IEC 61850 command originator
categories, depending on the selected station authority level.
3.13.8.4 Station authority level "L,R"
In this scenario only local or remote control access is allowed. Control access with
IEC 61850 command originator category station is interpreted as remote access.
There is no multilevel access.
IEC 61850
remote
Figure 74: Station authority is "L,R"
When station authority level "L,R" is used, control access can be selected using the
CONTROL function block. IEC 61850 data object CTRL.LLN0.LocSta and CONTROL
function block inputs CTRL_STA and CTRL_ALL are not applicable for this station
authority level.
Table 146: Station authority "L,R" using CONTROL function block
L/R control
Control FB input CTRL.LLN0.LocSta CTRL.LLN0.MltLev
CTRL_OFF N/A
CTRL_LOC N/A
CTRL_STA N/A
CTRL_REM N/A
CTRL_ALL N/A
1
Client IEC 61850 command originator category check is not performed.
SMU615
Technical Manual
REMOTE LOCAL
IEC 61850 IEC 61850
remote remote
IED IED
L/R control status
FALSE
FALSE
FALSE
FALSE
FALSE
LR state parameter or from the IEC 61850 data object
OFF
IEC 61850 IEC 61850 IEC 61850
remote remote remote
IED
L/R state
CTRL.LLN0.LocKeyHMI
0
1
0
2
0
Basic functions
Control access
Local user IEC 61850 client
x
x
1
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