5 OVERVIEW OF DATA PROTOCOLS
The products supports a wide range of protocols to make them applicable to many industries and
applications. The exact data protocols supported by a particular product depend on its chosen application,
but the following table gives a list of the data protocols that are typically available.
SCADA data protocols
Data Protocol Layer 1 protocol Description
Courier K-Bus, RS232, RS485, Ethernet Standard for SCADA communications developed by Alstom Grid.
MODBUS RS485 Standard for SCADA communications developed by Modicon.
IEC 60870-5-103 RS485 IEC standard for SCADA communications
DNP 3.0 RS485, Ethernet
Standard for SCADA communications developed by Harris. Used mainly in
North America.
IEC 61850 Ethernet IEC standard for substation automation. Facilitates interoperability.
The relationship of these protocols to the lower level physical layer protocols are as follows:
Data Protocols
IEC 60870-5-103
MODBUS
IEC 61850
DNP3.0 DNP3.0
Courier Courier
Courier Courier
Data Link Layer
EIA(RS)485 Ethernet EIA(RS)232 K-Bus
Physical Layer
Copper or Optical Fibre
MiCOM P747 Chapter 7 - SCADA Communications
P747-TM-EN-1 199
To Next Page
Loading...
Need help?
General
