Denial Of Service; Functionality; Denial Of Service, Frame Rate Control For Front Port Dosfrnt; Identification - Hitachi Relion 650 Series Technical Manual

Section 14
Basic IED functions
14.18

Denial of service

14.18.1

Functionality

The Denial of service functions (DOSLAN1 and DOSFRNT) are designed to limit overload on the IED
produced by heavy Ethernet network traffic. The communication facilities must not be allowed to
compromise the primary functionality of the device. All inbound network traffic will be quota controlled
so that too heavy network loads can be controlled. Heavy network load might for instance be the
result of malfunctioning equipment connected to the network.
14.18.2

Denial of service, frame rate control for front port DOSFRNT

14.18.2.1

Identification

Function description
Denial of service, frame rate control for
front port
14.18.2.2

Function block

D0E13228T201305151403 V1 EN-US
Figure 182: DOSFRNT function block
14.18.2.3

Signals

Table 389: DOSFRNT Output signals
Name
LINKUP
WARNING
ALARM
14.18.2.4

Settings

The function does not have any parameters available in the local HMI or PCM600.
408
DOSFRNT
LINKUP
WARNING
ALARM
IEC09000133-1-en.vsd
Type
BOOLEAN
BOOLEAN
BOOLEAN
© 2021 Hitachi Energy. All rights reserved.
IEC 61850 IEC 60617
identification identification
DOSFRNT -
Description
Ethernet link status
Frame rate is higher than normal state
Frame rate is higher than throttle state
1MRK 511 557-UEN Rev. A
D0E7215T201305151403 v1
D0E7336T201305151403 v1
ANSI/IEEE C37.2
device number
-
D0E7340T201305151403 v1
D0E7269T201305151403 v1
D0E7217T201305151403 v1
Technical Manual