GE 345 Communications Manual

TOC
345 TRANSFORMER PROTECTION SYSTEM – COMMUNICATIONS GUIDE toc–1
Table of Contents
Communications interfaces ...................................................................................... 1
RS485 interface............................................................................................................ 2
Electrical Interface...........................................................................................................................................2
MODBUS Protocol.............................................................................................................................................2
Data Frame Format and Data Rate ........................................................................................................ 2
Data Packet Format ....................................................................................................................................... 3
Error Checking................................................................................................................................................... 3
CRC-16 Algorithm............................................................................................................................................ 3
Timing.................................................................................................................................................................... 4
345 supported functions.............................................................................................................................. 4
DNP protocol settings.....................................................................................................................................5
DNP communication...................................................................................................................................... 5
DNP device profile ........................................................................................................................................... 6
DNP implementation...................................................................................................................................... 8
DNP serial EnerVista Setup........................................................................................................................13
DNP general .....................................................................................................................................................15
IEC 60870-5-103 serial communication.............................................................................................16
Interoperability ...............................................................................................................................................16
Physical layer...................................................................................................................................................16
Link layer ........................................................................................................................................................... 17
Application layer ............................................................................................................................................17
Transmission mode for application data............................................................................................17
Common address of ASDU........................................................................................................................17
Selection of standard information numbers in monitor direction..........................................17
Selection of standard information numbers in control direction............................................20
Basic application functions.......................................................................................................................20
Miscellaneous..................................................................................................................................................21
Application level.............................................................................................................................................21
Application functions ...................................................................................................................................21
Type identification.........................................................................................................................................21
Function type...................................................................................................................................................22
Information number.....................................................................................................................................22
Data management....................................................................................................................................... 22
Digital states ....................................................................................................................................................23
Measurands......................................................................................................................................................23
Commands.......................................................................................................................................................24
103 general settings ....................................................................................................................................25
Ethernet interface .....................................................................................................26
SNTP..................................................................................................................................................................... 26
SNTP settings...................................................................................................................................................26
SNTP modes .....................................................................................................................................................26
MODBUS TCP/IP.............................................................................................................................................. 27
Data and control functions.......................................................................................................................27
Exception and error responses ...............................................................................................................35
Request response sequence ....................................................................................................................35
CRC .......................................................................................................................................................................36
DNP Ethernet protocol settings .............................................................................................................. 38
DNP communication....................................................................................................................................38
DNP device profile .........................................................................................................................................38
DNP port allocation.......................................................................................................................................41
DNP implementation....................................................................................................................................42
DNP Ethernet EnerVista Setup.................................................................................................................47
DNP general .....................................................................................................................................................49
IEC60870-5-104 protocol .......................................................................................................................... 50
IEC 60870-5-104 interoperability...........................................................................................................50

GE 345 Specifications

General

Brand	GE
Model	345
Category	Relays
Language	English