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15.
PIXIT FOR TIME AND TIME SYNCHONISATION MODEL
ID
Ed
What time quality bits are supported (may be
Tm1
1
set by the IED)
Describe the behavior when the time server(s)
ceases to respond
Tm2
1,2
What is the time server lost detection time
How long does it take to take over the new time
Tm3
1,2
from time server
1,2 When is the time quality bit "ClockFailure" set RTC is out-of-order
Tm4
When is the time quality bit "Clock not
Tm5
1,2
Synchronized" set
Is the timestamp of a binary event adjusted to
Tm6
-
the configured scan cycle
Does the device support time zone and daylight
Tm7
1
saving
Which attributes of the SNTP response packet
Tm8
1,2
are validated
Do the COMTRADE files have local time or
Tm9
1,2
UTC time and is this configurable
Description
- 1098 -
Value / Clarification
Y
LeapSecondsKnown
N
ClockFailure
Y
ClockNotSynchronized
On one time server: IED tries to
synchronize with another time
server.
On all time servers:
The quality attribute
"ClockNotSynchronized" will be set
to TRUE.
The lost detection time depends on
the network condition.
10 seconds
It depends on the condition of
synchronization. Typically from 1 to
10 minutes.
Deprecated
Yes for both.
Y
Leap indicator not equal
to 3?
N
Mode is equal to SERVER
N
OriginateTimestamp is
equal to value sent by the
SNTP client as Transmit
Timestamp
Y
RX/TX timestamp fields
are checked for
reasonableness
Y
SNTP version 3 and/or 4
N
other (describe)
UTC
Not Configurable
6F2T0207 (0.01)
(PIXIT Ed.1&Ed.2)
GRE200 (5,6)
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