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UR SERIES – COMMUNICATIONS GUIDE
MODEL IMPLEMENTATION CONFORMANCE STATEMENT (MICS)
CHAPTER 3: IEC 61850 COMMUNICATION
3
3.5 Model implementation conformance statement (MICS)
This model implementation conformance statement (MICS) details the information model supported by a particular UR
device, including implemented logical devices, logical nodes, data objects, and data attributes. It is the top-level IEC 61850
data model. The information model also contains implemented control blocks and datasets.
The information model of a UR device depends in general on the device's order code, and it can vary widely from product
to product and from option to option. The complete information model for a particular UR device with a particular order
code, as it exists with factory default settings, is embodied in the device's IED capability description (ICD) file. A device's ICD
file can be obtained from the device itself or from the EnerVista UR Setup software.
This section contains an outline of the information model of the UR series of devices; the information model of a particular
UR device consists of the subset of what is shown here that is relevant to that UR device.
In order to contain the size of this chapter, the following repetitious data objects and data attributes are omitted from this
outline. These are nonetheless implemented in the device.
Table 3-7: Common data objects and attributes
Control (IEC 61850-7-2 clause 20)
S51
Select
Yes
S52
SelectWithValue
S53
Cancel
Yes
S54
Operate
Yes
S55
Command-Terminate
S56
TimeActivated-Operate
File transfer (IEC 61850-7-2 clause 23)
S57
GetFile
Yes
S58
SetFile
S59
DeleteFile
S60
GetFileAttributeValues
Yes
Time (clause 5.5)
T1
Time resolution of internal clock
1 µs
≈
2**-20 s
T2
Time accuracy of internal clock
SNTP, IRIG-B, PTP
T3
Supported TimeStamp resolution
1 µs
≈
2**-20 s
Name
Description
Beh
The data object Beh is mandatory in every logical node.
The value of Beh.stVal in LLN0 of the Master logical device is test/blocked if the FlexLogic operand
ANY MAJOR ERROR
is
On, otherwise test/blocked if the
TEST MODE FUNCTION
selection is Isolated, otherwise test if the
TEST MODE
FUNCTION
selection is Forcible, otherwise on.
In all other logical nodes, the value of Beh.stVal is off if the function modeled by the logical node has a Function
Disabled/Enabled setting and that setting is selected Disabled, otherwise is the same as the value of Beh.stVal in the
Master LLN0.
NamPlt
Although optional, the data object NamPlt is instantiated in every logical node except LPHD1. This data object contains
in its d data attribute a natural language description of the UR element the containing logical node is modelling. It is
included below only in the Master logical device, as there it contains several important data attributes not found in the
others.
t
The data attribute t (TimeStamp) is mandatory in every status, measurand and control data object, and reflects the UR
device UTC time at last value change of the status, measurand, control, or q values of the containing data object.
q
The data attribute q (Quality) is mandatory in every status, measurand and control data object, and reflects the quality
of the status, measurand and control values of the containing data object.
q is fixed at zero in cases where the value is an internal UR device mode or status, and thus the value is known to be
good, is unaffected by test mode, cannot be operator blocked and cannot be substituted.
Otherwise, q is set according to the following table. Note that the value of Beh.stVal of the logical node containing the
Quality data attribute is as described a few paragraphs earlier in this section.
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Summary of Contents for UR series
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