Dnp Communications; Dnp Protocol - GE D90 Plus Instruction Manual

Line distance protection system

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CHAPTER 6: COMMUNICATIONS

DNP communications

LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL

The DNP protocol allows for the optimization of control and data acquisition between the

equipment in the substation and the central control center. The protocol is scalable; that is,

it is designed to be compatible with the latest high speed LAN technology yet still be

implemented over slower speed serial links.

The DNP protocol improves upon many master-slave protocols by improving overall

communication performance requirements and provides time-stamping with millisecond

Communications Guide for details on the DNP protocol.

The DNP server can simultaneously support one client over serial RS485 and two clients

over Ethernet. Level 3 is supported for parsing requests and generating responses. It is

capable of reporting any indication or measurement and operating any output present in

the device. Both direct-operate and select-before-operate modes of control are supported.

Three user-configurable input and output maps are implemented.

Select the Settings > Communications > DNP > Protocol menu item to open the DNP

protocol configuration window.

DNP COMMUNICATIONS