2–12
350 FEEDER PROTECTION SYSTEM – COMMUNICATIONS GUIDE
DNP PROTOCOL SETTINGS
CHAPTER 2: RS485 INTERFACE
NOTE
NOTE:
1.
A default variation refers to the variation response when variation 0 is requested and/
or in class 0, 1, 2, or 3 scans. The default variations for object types 1, 2, 20, 21, 22, 23,
30, and 32 are selected via relay settings. This optimizes the class 0 poll data size.
2.
For static (non-change-event) objects, qualifiers 17 or 28 are only responded when a
request is sent with qualifiers 17 or 28, respectively. Otherwise, static object requests
sent with qualifiers 00, 01, 06, 07, or 08, will be responded with qualifiers 00 or 01 (for
changeevent objects, qualifiers 17 or 28 are always responded.)
Cold restarts are implemented the same as warm restarts – the 350 is not restarted, but
the DNP process is restarted.
DNP serial EnerVista Setup
The following tables show the settings needed to configure all the DNP 3.0 implementation
parameters.
Table 2-1: RS-485
In order to activate DNP 3.0 at the RS485 rear port, the setting "Rear 485 Protocol" must be
set to DNP 3.0. Once the setting has been changed, the relay must be switched off, then
switched on.
Table 2-2: DNP protocol
SETTINGS
PARAMETER RANGE
FORMAT
RS485 Baud Rate
115200
9600, 19200, 38400, 57600,
115200
F101
RS485 Comm Parity
None
None, Odd, Even
F102
Rear 485 Protocol
DNP 3.0
Modbus, IEC60870-5-103, DNP
3.0
F97
SETTINGS
PARAMETER
RANGE
FORMAT
DNP Unsol Resp Function
Disabled
Disabled ; Enabled
F126
DNP Unsol Resp Timeout
5 s
0 to 60 s
F1
DNP Unsol Resp Max Retries
10
1 to 255
F1
DNP Unsol Resp Dest Addr
1
0 to 65519
F1
DNP Time Sync IIN Period
1440 min
1 to 10080 min
F1
DNP Message Fragment Size
240
30 to 2048
F1
DNP Object 1 Default Variation
2
1 ; 2
F1
DNP Object 2 Default Variation
2
1 ; 2
F1
DNP Object 20 Default Variation
1
1 ; 2 , 5 ; 6
F78
DNP Object 21 Default Variation
1
1 ; 2 ; 9 ; 10
F79
DNP Object 22 Default Variation
1
1 ; 2 , 5 ; 6
F80
DNP Object 23 Default Variation
1
1 ; 2 , 5 ; 6
F81
DNP Object 30 Default Variation
1
1 ; 2 ;3 ; 4
F82
DNP Object 32 Default Variation
1
1 ; 2 ;3 ; 4
F83
DNP TCP Connection Timeout
120 s
10 to 300 s
F1