Chapter 1. Introduction
1.2
IEC 104 Overview
IEC 104 is a client/server communications protocol originally developed for use in the electric
utility sector for power transmission and distribution systems. It has migrated to other vertical
markets, and is now a general market protocol based on a 3-layer protocol scheme. IEC 104 is a
generational protocol coming from a foundation of the IEC 60870-5-101 protocol.
PACSystems RX3i
HMI / SCADA
IEC104 Server
IEC104 Client
(RTU)
Enet
Enet
Ethernet Capable Net.
switch
switch
Figure 1: IEC 104 Basic System Architecture
SCADA Master Station / Control
Center with IEC 104 Client
Engg. Station - PME
HMI – IEC 104 Client
LAN1
EIS001 – IEC 104
Server Modules
104 LAN2
RX3i System
Figure 2: Application Showing two IEC 104 LANs Accessing RX3i through two EIS001 Modules
2
PACSystems RX3i Ethernet 104 Server Module User Manual
GFK-2949C