Schweitzer Engineering Laboratories SEL-311L Instruction Manual page 701

APPENDIX H: DISTRIBUTED NETWORK PROTOCOL (DNP)
O
VERVIEW
The 311L family of relays are available with the option to support Distributed Network
SEL-
Protocol (DNP) 3.00 Level 2 Slave protocol. This includes access to metering data, protection
elements (Relay Word), contact I/O, targets, sequential events recorder, breaker monitor, relay
summary event reports, settings groups, and time synchronization. The
supports DNP point remapping.
C
ONFIGURATION
To configure a port for DNP, set the port PROTO setting to DNP. Although DNP may be
selected on any of the available ports, DNP may not be enabled on more than one port at a time.
The following information is required to configure a port for DNP operation:
Label
SPEED
DNPADR
ECLASS
TIMERQ
DECPLA
DECPLV
DECPLM
STIMEO
DRETRY
DTIMEO
MINDLY
MAXDLY
PREDLY
PSTDLY
ANADB
UNSOL
PUNSOL
REPADR
NUMEVE
AGEEVE
UTIMEO
The RTS signal may be used to control an external transceiver. The CTS signal is used as a
DCD input, indicating when the medium is in use. Transmissions are only initiated if DCD is
de-asserted. When DCD drops, the next pending outgoing message may be sent once an idle
time is satisfied. This idle time is randomly selected between the minimum and maximum
allowed idle times (i.e., MAXDLY and MINDLY). In addition, the
received data and treats receipt of data as a DCD indication. This allows RTS to be looped back
to CTS in cases where the external transceiver does not support DCD. When the
Date Code 20010625
3.00 LEVEL 2
Description
Baud rate (300–38400)
DNP Address (0–65534)
Class for event data (0–3)
Time-set request interval (0–32767 min.)
Currents scaling (0–3 decimal places)
Voltages scaling (0–3 decimal places)
Miscellaneous data scaling (0–3 decimal places)
Select/operate time-out (0–30 sec.)
Data link retries (0–15)
Data link time-out (0–5 sec.)
Minimum time from DCD to Tx (0–1 sec.)
Maximum time from DCD to Tx (0–1 sec.)
Settle time from RTS on to Tx (OFF, 0–30 sec.)
Settle time after Tx to RTS off (0–30 sec.)
Analog reporting dead band (0–32767 counts)
Enable Unsolicited reporting (Y, N)
Enable Unsolicited reporting at power-up (Y, N)
DNP Address to report to (0–65534)
Number of events to transmit on (1–200)
Age of oldest event to transmit on (0–60 sec.)
Unsolicited confirmation timeout (0–50 sec.)
Distributed Network Protocol (DNP) 3.00 Level 2
SEL-311L Instruction Manual
311L Relay
SEL-
Default
2400
0
2
0
1
1
1
1.0
3
1
0.05
0.10
0
0
100
N
N
0
10
2.0
2
311L Relay monitors
SEL-
311L
SEL-
H-1