ABB REL650 - Denial of Service

17.14 Denial of service
17.14.1 Identification
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Denial of service, frame rate control for
front port
DOSFRNT - -
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Denial of service, frame rate control for
LAN1 port
DOSLAN1 - -
17.14.2 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
17.14.3 Setting guidelines
The function does not have any parameters available in the local HMI or PCM600.
1MRK 506 334-UUS A Section 17
Basic IED functions
487
Application manual