ABB RET670 Applications Manual

4.6 IEC 60870-5-103 communication protocol
4.6.1 Application
en 05000660_ ansi.vsd
TCP/IP
Control
Center
IED
IEDIED
Gateway
Star coupler
RER 125
Station
HSI
ANSI05000660 V3 EN
Figure 325: Example of IEC 60870-5-103 communication structure for a substation
automation system
IEC 60870-5-103 communication protocol is mainly used when a protection IED
communicates with a third party control or monitoring system. This system must have
software that can interpret the IEC 60870-5-103 communication messages.
Functionality
IEC 60870-5-103 is an unbalanced (master-slave) protocol for coded-bit serial
communication exchanging information with a control system. In IEC terminology a
primary station is a master and a secondary station is a slave. The communication is
based on a point-to-point principle. The master must have software that can interpret
the IEC 60870-5-103 communication messages. For detailed information about IEC
60870-5-103, refer to IEC60870 standard part 5: Transmission protocols, and to the
section 103, Companion standard for the informative interface of protection equipment.
Design
General
The protocol implementation consists of the following functions:
1MRK504116-UUS C Section 4
Station communication
835
Application manual

ABB RET670 Specifications

General

Rated Frequency	50/60 Hz
Inputs	Analog and binary inputs
Application	Protection of power systems
Communication Protocols	IEC 61850, DNP3, Modbus
Operating Temperature Range	-25°C to +55°C
Mounting	Rack mounted
Number of Binary Inputs	Up to 48
Number of Binary Outputs	32
Protection Functions	Overcurrent Protection
Outputs	Binary outputs
Enclosure	IP 54
Type	Line Differential Protection
Number of Analog Inputs	24