
17.16.3.3
Signals
Table 610:
DOSLAN1 Output signals
Name
Type
Description
LINKUP
BOOLEAN
Ethernet link status
WARNING
BOOLEAN
Frame rate is higher than normal state
ALARM
BOOLEAN
Frame rate is higher than throttle state
17.16.3.4
Settings
The function does not have any parameters available in the local HMI or PCM600.
17.16.3.5
Monitored data
Table 611:
DOSLAN1 Monitored data
Name
Type
Values (Range)
Unit
Description
State
INTEGER
0=Off
1=Normal
2=Throttle
3=DiscardLow
4=DiscardAll
5=StopPoll
-
Frame rate control state
Quota
INTEGER
-
%
Quota level in percent 0-100
IPPackRecNorm
INTEGER
-
-
Number of IP packets
received in normal mode
IPPackRecPoll
INTEGER
-
-
Number of IP packets
received in polled mode
IPPackDisc
INTEGER
-
-
Number of IP packets
discarded
NonIPPackRecNorm
INTEGER
-
-
Number of non IP packets
received in normal mode
NonIPPackRecPoll
INTEGER
-
-
Number of non IP packets
received in polled mode
NonIPPackDisc
INTEGER
-
-
Number of non IP packets
discarded
17.16.4
Operation principle
The Denial of service functions (DOSLAN1 and DOSFRNT) measures the IED load from
communication and, if necessary, limit it for not jeopardizing the IEDs control and
protection functionality due to high CPU load. The function has the following outputs:
Section 17
1MRK 506 335-UUS A
Basic IED functions
784
Technical manual
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