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CHAPTER 1: COMMUNICATIONS GUIDE RS485 INTERFACE

345 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE 1–13

DNP serial EnerVista

Setup

The following tables show the settings needed to configure all the DNP 3.0 implementation

parameters.

Table 2: 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 3: 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

GE 345 Communications Manual

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