CHAPTER 7: IEC 61850 PROTOCOL 7.2 IEC 61850 PROFILE FOR F650
GEK-106310-AF F650 DIGITAL BAY CONTROLLER 7-191
7 PIXIT for Time and time synchronisation model
8 PIXIT for File transfer model
Description(cont.) Value / Clarification(cont.)
Additional Items:
The following control models are available only for Pos
co
ntrollable attribute of XCBR LN. For the rest of
controllable objects only direct-with-normal-security
model is permitted.
sbo-with-normal-security
direct-with-enhanced-security
sbo-with-enhanced-security
Behaviour of DUT in case of control models direct-with-
enha
nced-security or sbo-with-enhanced-security
After reception of “Operate” service the DUT checks
whether the operation has been succesfully done. The
timeout DUT internally checks for operation realisation is
fixed at 30 seconds. If this timeout elapses and the
operation has not been finished the DUT sends negative
Command Termination service to the client. If the
operation finishes within the 30 seconds timeout the DUT
sends positive Command Termination service to the client.
In case of direct-with-enhanced-security when the DUT is
w
aiting for operation result new “Operate” requests from
any client are rejected until the pending operation finilized
sucessfully or the 30 seconds timeout elapses.
Description Value / Clarification
What quality bits are supported N LeapSecondsKnown
Y ClockFailure
Y ClockNotSynchronized
What is the behaviour when the time synchronization
signal/messag
es are lost
Internal clock is used.
When is the quality bit "Clock failure" set? It is set when SNTP packet with LI field (Leap Indicator)
w
ith both bits set to ON is received.
When is the quality bit "Clock not synchronised” set? It is set when the communication is lost with the time
ser
ver. The timeout for setting this bit is 1 minute for
unicast mode, 5 minutes for anycast mode and up to 18
minutes for broadcast mode.
After startup the device has not set this quality bit even if
the time ser
ver is not present or not working. The bit is set
when the corresponding timeout elapses.
Description Value / Clarification
What is structure of files and directories? The main directory for files is “/LD/XXXLD/” where XXXLD
is the Logical Device name
.
COMTRADE files are located in “/LD/XXXLD/COMTRADE/”
d
irectory. All other files are in “/LD/XXXLD/” directory.
The device retrieves the content and/or definition of files
w
hen the client’s request contains the filename with full
path or only the filename withouth path. Relative paths
like "/XXXLD/file1" or "COMTRADE/file1" are not allowed
a
nd are returned by the server with error code “file-non-
existing".
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