Denial Of Service - ABB REL650 Applications Manual

1MRK 506 334-UUS A
17.14
17.14.1
17.14.2
17.14.3
Application manual

Denial of service

Identification
Function description
Denial of service, frame rate control for
front port
Function description
Denial of service, frame rate control for
LAN1 port
Application
The denial of service functions (DOSFRNT,DOSLAN1 and DOSSCKT) are designed to
limit the CPU load that can be produced by Ethernet network traffic on the IED. 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.
DOSFRNT, DOSLAN1 and DOSSCKT 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:
• LINKUP indicates the Ethernet link status
• WARNING indicates that communication (frame rate) is higher than normal
• ALARM indicates that the IED limits communication
Setting guidelines
The function does not have any parameters available in the local HMI or PCM600.
IEC 61850 IEC 60617
identification identification
DOSFRNT -
IEC 61850 IEC 60617
identification identification
DOSLAN1 -
Section 17
Basic IED functions
ANSI/IEEE C37.2
device number
-
ANSI/IEEE C37.2
device number
-
487