CHAPTER 3: IEC 61850 COMMUNICATION
PIXIT CONFORMANCE STATEMENT
UR FAMILY – COMMUNICATIONS GUIDE
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3
3.7 PIXIT conformance statement
This section outlines protocol implementation extra information for testing (PIXIT), which relates to restrictions and
limitations of a device. This section specifies the PIXIT of the IEC 61850 interface in UR devices with firmware version 7.3
and later.
Together with PICS and the MICS, the PIXIT forms the basis for a conformance test according to IEC 61850-10. The PIXIT
entries contain information that is not available in the PICS, MICS, TICS documents or SCL file.
Each table specifies the PIXIT for applicable ACSI service model as structured in IEC 61850-10. The “Ed” column indicates if
the entry is applicable for IEC 61850 Edition 1 and/or Edition 2.
Table 3-226: PIXIT for Association model
I31
IED version and instance information: LPHD.PhyNam:
swRev, serNum, LLN0.NamPlt.configRev
Yes
Yes
I32
Configuration values (fc=CF)
Yes
Yes
I33
Setting Parameter values (fc=SP, SG)
Yes
Yes
I34
SCL Header management (9.1)
I35
Modify IED data model (add LN/Data object/LD, or
remove unused LD/LN/Data object)
Tool functionality
I41
Support MustUnderstand concept (8.2)
Yes
Yes
I42
Bind incoming 61850 signals to IED internal (input)
signals
Yes
Yes
I43
Use or create IED Input section for binding incoming
(external) signals to internal signals, to document this
binding
Yes
Yes
I44
Create CID file for IED
Yes
I45
Support ldName for LD name specification
Yes
Yes
I46
Modify LN prefixes or ldInst
ID
Edition
Description
Value / Clarification
As2
1,2
TCP_KEEPALIVE value. The recommended
range is 1..20s.
20 seconds
As3
1,2
Lost connection detection time
120 seconds (if there is no MMS traffic for this time,
the connection is dropped)
As5
1,2
What association parameters are
necessary for successful association?
Transport selector Y
Session selector Y
Presentation selector Y
AP Title N
AE Qualifier N
As6
1,2
If association parameters are necessary
for association, describe the correct
values
Transport selector 0001
Session selector 0001
Presentation selector 00000001
As7
1,2
What are the maximum and minimum
MMS PDU sizes?
Max MMS PDU size 64000
Min MMS PDU size 700
As8
1,2
What is the maximum start up time after
a power supply interrupt?
120 seconds
As9
1,2
Does this device function only as test
equipment?
No
UR
firmware
UR Setup
software
Value/comments