ABB REF 610 - Specific DNP Features

OBJECT REQUEST
(slave must parse)
RESPONSE
(master must parse)
Object
group
Variation Description Function
codes (dec)
Qualifier
codes (hex)
Function
codes (dec)
Qualifier
codes (hex)
100 3 Extended Floating Point
101 1 Small Packed Binary-Coded
Decimal
101 2 Medium Packed Binary-Coded
Decimal
101 3 Large Packed Binary-Coded
Decimal
No Object 13, 14
5.1.16.4. Specific DNP features
Time synchronization
If time synchronization (minute-pulse or second-pulse) of the relay’s real-time clock
is realized via a digital input, the following applies to the DNP interface of the relay:
*
Depending on the pulse type, either the date-to-minute or the date-to-second
information of the DNP time synchronization message is used.
*
The relay sends only one request for time synchronization to the DNP master,
which is at power up.
Unsolicited reporting start up
Due to implementation differences in DNP master devices, the following alternative
unsolicited reporting (SPA parameter 503V24) start ups are available in the relay:
*
1 = Unsolicited reporting starts immediately, without permission from the master.
*
2 = The relay sends an empty unsolicited response message when
communication begins, which the master confirms. After this, the relay starts to
send unsolicited responses.
*
3 = The relay sends an empty unsolicited response message when
communication begins, which the master confirms. After this, the master enables
unsolicited reporting for certain or all classes using function 20. Classes which
are not enabled remain disabled.
Only the last alternative is compliant with the DNP 3.0 standard.
Event handling
The maximum capacity of the DNP event buffer is 100 events. When unsolicited
reporting has been enabled (SPA parameter 503V24), the event reporting uses the
following SPA parameters, called send throttle parameters:
110
REF 610REF 610
Feeder Protection Relay
Technical Reference Manual
1MRS755310