Date Code 20010731 Distributed Network Protocol (DNP) 3.00 G-1
SEL-352-1, -2 Instruction Manual
APPENDIX G: DISTRIBUTED NETWORK PROTOCOL
(DNP) 3.00
OVERVIEW
Some versions of the SEL-352 family of relays support Distributed Network 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 SEL-352 Relay supports DNP point
remapping, modem support, and virtual terminal object.
CONFIGURATION
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 Description Default
SPEED Serial port baud rate (300–38400) 2400
TIMEOUT Serial port time-out (0–30 minutes) 5
DNPADR DNP Address (0–65534) 0
MODEM Modem connected to port (Y, N) N
MSTR Modem startup string (up to 30 characters) E0X0&D0S0=2
PH_NUM Phone number to dial-out to (up to 30 characters)
MDTIME Time to attempt dial (5–300 seconds) 60
MDRETI Time between dial-out attempts (5–3600 seconds) 120
MDRETN Number of dial-out attempts (0–5) 3
ECLASSA Class for Analog event data (0 for no event, 1–3) 2
ECLASSB Class for Binary event data (0 for no event, 1–3) 1
ECLASSC Class for Counter event data (0 for no event, 1–3) 0
DECPLA Currents scaling (0–3 decimal places) 1
DECPLV Voltage scaling (0–3 decimal places) 1
DECPLM Misc. scaling (0–3 decimal places) 1
TIMERQ Time-set request interval (0–32767 min.) 0
STIMEO Select/operate time-out (0.0–30.0 sec.) 1.0
DTIMEO Data link time-out (0–5 sec.) 1
MINDLY Minimum time from DCD to TX (0.00–1.00 sec.) 0.05
MAXDLY Maximum time from DCD to TX (0.00–1.00 sec.) 0.10
PREDLY Settle time from RTS on to TX (OFF, 0.00–30.00 sec.) 0
PSTDLY Settle time after TX to RTS off (0.00–30.00 sec.) 0
ANADBA Analog reporting dead band (0–32767 counts) 100
ANADBV Analog reporting dead band (0–32767 counts) 100
ANADBM Analog reporting dead band (0–32767 counts) 100
ETIMEO
Event data confirmation time-out (0.1–50.0 sec) 2.0
DRETRY Data link retries (0–15) 3
UNSOL Enable unsolicited reporting (Y, N) N
PUNSOL Enable unsolicited reporting at power-up (Y, N) N
REPADR DNP Address to report to (0–65534) 0
NUMEVE Number of events to transmit on (1–200) 10
AGEEVE Age of oldest event to transmit on (0–60 sec.) 2.0
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