LN: Ramp function Name: FRNIP
Logical node FRMP shall be used as a generic ramp. The LN is required due to the fact that the data object attributes of the ASG common data class do not contain all of the information required to achieve a full ramping function with divergent up and down trends.
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FRMP class |
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Data object name |
Common data class |
Explanation |
T |
М/О/ c |
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LNName |
|
The name shall be composed of the class name, the LN-Prefix and LN- Instance-ID according to IEC 61850-7-2, Clause 22. |
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Data objects |
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Status information |
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Adj St |
ENS |
State of adjustment process |
|
0 |
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Measured and metered values |
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Out |
MV |
Ramp output |
|
M |
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ErrTerm |
MV |
Control loop termination error value |
|
0 |
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Settings . |
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RmpUp |
ASG |
Ramping rate on a upward trend |
|
0 |
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RmpDn |
ASG |
Ramping rate on a downward trend |
|
0 |
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StepPs |
ASG |
Step size when turning from negative to positive direction |
|
о |
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StepNg |
ASG |
Step size when turning from positive to negative direction |
|
0 |
LN: Set-point control function Name: FSPT
Logical node FSPT shall be used to provide the common characteristics found in all controller or regulator type logical nodes. The LN can be standalone or cascaded with other logical nodes to form a complete controller.
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FSPT class |
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Data object name |
Common data class |
Explanation |
T |
М/О/ c |
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LNName |
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The name shall be composed of the class name, the LN-Prefix and LN- Instance-ID according to IEC 61850-7-2, Clause 22. |
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Data objects |
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Status information |
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Loc |
SPS |
Local control behaviour |
|
о |
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SptDvAlm |
SPS |
Deviation alarm |
|
о |
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SptUp |
SPS |
Setpoint going up (raising) |
|
о |
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SptDn |
SPS |
Setpoint going up (lowering) |
|
о |
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SptDir |
SPS |
Setpoint direction |
|
О |
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SptEndSt |
ENS |
End status of set-point control |
|
О |
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Adj St |
ENS |
Adjustment status |
|
о |
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Measured Values |
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SptMem |
MV |
Setpoint in memory |
|
М |
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ErrTerm |
MV |
Control loop termination error value |
|
о |
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Out |
MV |
Output |
|
О |
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Controls |
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SptChg |
ВАС |
Setpoint change (raise, lower) |
|
О |
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SptVal |
APC |
Setpoint |
|
м |
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Auto |
SPC |
Automatic operation |
|
о |
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Settings |
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MaxRst |
ASG |
Maximum restriction |
|
о |
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MinRst |
ASG |
Minimum restriction |
|
о |
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DvAlm |
ASG |
Deviation alarm |
|
О |
LN: Action at over threshold Name: FXOT
Logical node FXOT shall be used to set a high-level threshold value to be used in control sequences. If a second level is necessary, a second instance can be modelled. FXOT can typically be used whenever a protection, control or alarm function is based on other physical measurements than primary electrical data.
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FXOT class |
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Data object name |
Common data class |
Explanation |
T |
М/О/ c |
|
LNName |
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The name shall be composed of the class name, the LN-Prefix and LN- Instance-ID according to IEC 61850-7-2, Clause 22. |
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Data objects |
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Status information |
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Op |
ACT |
Level of action reached |
T |
M |
|
Settings |
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StrVal |
ASG |
Start level set-point |
|
c |
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OpDITmms |
ING |
Operate delay time [ms] |
|
0 |
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StrCrv |
CSG |
Start level curve |
|
c |
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RsDITmms |
ING |
Reset operate delay time [ms] |
|
о |
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Condition: Start level shall be given as a singular point or as a curve. |
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LN: Action at under threshold Name: FXUT
Logical node FXUT shall be used to set a low-level threshold value to be used in control sequences. If a second level is necessary, a second instance can be modelled. FXUT can
typically be used whenever a protection, control or alarm function is based on other physical measurements than primary electric data.
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FXUT class |
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Data object name |
Common data class |
Explanation |
T |
MIDI C |
|
LNName |
|
The name shall be composed of the class name, the LN-Prefix and LN- lnstance-!D according to IEC 61850-7-2, Clause 22. |
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|
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Data objects |
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Status information |
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Op |
ACT |
Level of action reached |
T |
M |
|
Settings |
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StrVal |
ASG |
Start level set-point |
|
C |
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OpDITmms |
ING |
Operate delay time [ms] |
|
0 |
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StrCrv |
CSG |
Start level curve |
|
C |
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RsDITmms |
ING |
Reset operate delay time [ms] |
|
0 |
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Condition: Start level shall be given as a singular point or as a curve. |
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Logical nodes for generic references LN Group: G
Modelling remarks
The logical nodes of group G shall be used only for modelling functions without a dedicated logical node with appropriate semantics. Therefore, no description and requirements for the logical nodes of group G are given in IEC 61850-5.
LN: Generic automatic process control Name: GAPC
This node shall be used only to model in a generic way the processing/automation of functions that are not predefined by one of the groups A, С, M, P, or R. If needed, all data objects listed in Clause 6 of this standard can be used single or multiple for a dedicated application of LN GAPC. Data objects with proper semantic meaning should be preferred. The extension rules according to IEC 61850-7-1, Clause 14 shall be followed.
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GAPC class |
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Data object name |
Common data class |
Explanation |
T |
MIDI C |
|
LNName |
|
The name shall be composed of the class name, the LN-Prefix and LN- Instance-ID according to IEC 61850-7-2, Clause 22. |
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|
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Data objects |
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Status information |
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LocKey |
SPS |
Local or remote key |
|
0 |
|
Loc |
SPS |
Local control behaviour |
|
0 |
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Auto |
SPC |
Automatic operation |
|
О |
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Str1 |
ACD |
Start |
|
0 |
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0p1 |
ACT |
Operate |
T |
0 |
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Alm1 |
SPS |
Generic single alarm |
|
0 |
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Wm1 |
SPS |
Generic single warning |
|
О |
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Ind1 |
SPS |
Generic single indication |
|
О |
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Controls |
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OpCntRs |
INC |
Resettable operation counter |
|
О |
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LocSta |
SPC |
Switching authority at station level |
|
о |
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SPCSO1 |
SPC |
Single point controllable status output |
|
О |
|
DPCSO1 |
DPC |
Double point controllable status output |
|
О |
|
GAPC class |
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Data object name |
Common data class |
Explanation |
T |
М/О/ c |
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ISCSO1 |
INC |
Integer status controllable status output |
|
0 |
|
Settings |
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StrVaH |
ASG |
Start value |
|
о |
LN: Generic process I/O Name: GGIO
This node shall be used only to model in a generic way process devices that are not predefined by the groups S, T, X, Y, or Z. If needed, all data objects listed in Clause 6 can be used single or multiple for a dedicated application of LN GGIO. Data objects with proper semantic meaning should be preferred. The extension rules according to IEC 61850-7-1, Clause 14 shall be followed.
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GGIO class |
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Data object name |
Common data class |
Explanation |
T |
М/О/ c |
|
LNName |
|
The name shall be composed of the class name, the LN-Prefix and LN- Instance-ID according to IEC 61850-7-2, Clause 22. |
|
|
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Data objects |
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|
Descriptions |
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EEName |
DPL |
External equipment name plate |
|
о |
|
Status information |
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EEHealth |
ENS |
External equipment health |
|
о |
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LocKey |
SPS |
Local or remote key |
|
О |
|
Loc |
SPS |
Local control behaviour |
|
о |
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Intlnl |
INS |
Integer status input |
|
о |
|
Alm1 |
SPS |
General single alarm |
|
О |
|
Wrn1 |
SPS |
General single warning |
|
о |
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Indi |
SPS |
General indication (binary input) |
|
о |
|
Measured and metered values |
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|
An)n1 |
MV |
Analogue input |
|
о |
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AnOutl |
APC |
Controllable analogue output |
|
о |
|
CntRsI |
BCR |
Counter, resettable |
|
о |
|
Controls |
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|
OpCntRs |
INC |
Resettable operation counter |
|
о |
|
LocSta |
SPC |
Switching authority at station level |
|
о |
|
SPCSO1 |
SPC |
Single point controllable status output |
|
о |
|
DPCSO1 |
DPC |
Double point controllable status output |
|
О |
|
ISCSO1 |
INC |
Integer status controllable status output |
|
о |
LN: Generic log Name: GLOG
The LN GLOG refers to a function which allows to log not only changed data itself but also any related data being defined in the settings of LN GLOG. The logging is started by the changed data object (TrgRefl) or by the operator (LogTrg). The logged data are identified by the references to the related source data objects in the data model.
|
GLOG class |
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|
Data object name |
Common data class |
Explanation |
T |
MIDI C |
|
LNName |
|
The name shall be composed of the class name, the LN-Prefix and LN- Instance-ID according to IEC 61850-7-2, Clause 22. |
|
|
|
Data objects |
||||
|
Logged Status information, Measured and metered values, Controls, Settings |
||||
|
Access via LOG only |
|
Included value assigned to InRefl |
|
0 |
|
Controls |
||||
|
OpCntRs |
INC |
Counts the events logged (resettable) |
|
0 |
|
LogTrg |
SPC |
Trigger logging by operator |
|
0 |
|
Settings |
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|
LogRef |
ORG |
Reference to Log |
|
о |
|
TrgRefl |
ORG |
Trigger reference shows the receiving trigger signal |
|
0 |
|
InRefl |
ORG |
Reference to data objects / data attributes to include in LOG according to IEC 61850-7-2, when the configured trigger was active |
|
о |
