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IEC 60870-5-104

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IEC 60870-5-104 (also known as IEC 870-5-104) is an international standard, released in 2000 by the IEC (International Electrotechnical Commission). As can be seen from the standard's full designation 'Network access for IEC 60870-5-101 using standard transport profiles', its application layer is based on IEC 60870-5-101.

IEC 60870-5-104 enables communication between control station and substation via a standard TCP/IP network. The TCP protocol is used for connection-oriented secure data transmission.

IEC 60870-5-104 limits the information types and configuration parameters defined in IEC 60870-5-101, which means that not all functions available in IEC 60870-5-101 are supported by IEC 60870-5-104. For instance IEC 60870-5-104 does not support short time stamps (3-byte format), the length of the various address elements is set to defined maximum values. But in practice, vendors very often combine the IEC 60870-5-101 application layer with the IEC 60870-5-104 transport profile, without paying attention to these restrictions. This might then lead to problems, if a device strictly applies the standard.

Interoperability between devices by different vendors is ensured by the interoperability list, which is defined by the standard. In the list, the function range is defined for each device by marking the applicable functions. The common denominator between different vendor lists defines the possible function range.

The biggest advantage of IEC 60870-5-104 is that it enables communication via a standard network, which allows simultaneous data transmission between several devices and services. Apart from this, the same pros and cons apply to IEC 60870-5-104 sand IEC 60870-5-101. Issues that remain to be dealt with are the definition of communication with redundant systems or networks and, with the use of the internet, data encryption.

ISO/OSI Model

7 Application Layer IEC 60870-5-104 Companion Standard
IEC 60870-5-5, IEC 60870-5-4
6 Presentation Layer n/a
5 Session Layer n/a
4 Transport Layer TCP (RFC 793)
3 Network Layer IP (RFC 791)
2 Link Layer PPP (RFC 1661 & RFC 1662)Transmission of IP datagrams over ethernet network (RFC 894)
1 Physical Layer X.21Ethernet (IEEE 802.3)

Supported Information Types

Control Direction Single Command
Double Command
Setpoint
Regulating step command
Monitoring Direction Single indication [1 Bit] with quality
Single indication [1 Bit] with quality and time tag
Double indication [2 bit] with quality
Double indication [2 bit] with quality and time tag
Measured scaled value with quality
Measured scaled value with quality and time tag
Measured normalized value with quality
Measured normalized value with quality and time tag
Measured floating point value with quality
Measured floating point value with quality and time tag
Bitpattern [32 bit] with quality
Bitpattern [32 bit] with quality and time tag
Counter value with quality
Counter value with quality and time tag
Step position value with quality
Step position value with quality and time tag
Event of protection equipment with quality and time tag

Protocol Features

Application Layer On-demand transmission (e. g. single indications, analogs, ...)
Spontaneous transmission (e. g. single indications with time tag, ...)
Direct command transmission (with select before operate)
Clock synchronization
File Transfer
Address Space Common Address of ASDU: 1..65535
Information object address: 1..16777215

Implemented Protocol Stacks

IEC 60870-5-104, MasterIEC 60870-5-104, Slave

Applicable Products

ipRouteipRouteRouter for IEC 870-5-101 and IEC 870-5-104 protocols
start price 970,- €
Details...
product/ipRoute/en/ipRoute.pdf
ipConvLiteipConvLiteinexpensive protocol converter for standardized application
start price 1.800,- €
Details...
product/ipConvLite/en/ipConvLite_EN.pdf
ipConvOPCipConvOPCSoftwarepackage for conversion between OPC DA 3.0 Server and standard protocols
Details...
ipConvPBSipConvPBSUniversal protocol converter with integrated PROFIBUS-DP, slave interface
Details...
ipConvPBMipConvPBMUniversal protocol converter with integrated PROFIBUS-DP, master interface
Details...
ipConvPNMipConvPNMUniversal protocol converter with integrated PROFINET-IO, master interface
Available soon !
Details...
ipConvPNSipConvPNSUniversal protocol converter with integrated PROFINET-IO, slave interface
Details...
ipConvipConvUniversal protocol converter for highest degree of flexibility
Details...
product/ipConv/en/ipConv_en.pdf
Fink WinPP Protocol SimulatorFink WinPP Protocol SimulatorSimulationsoftware for IEC 60870-5-101, IEC 60870-5-102, IEC 60870-5-103, IEC 60870-5-104, SINAUT 8-FW 16-1024 PCM/DPDM
Details...

References

ELIAELIA
Details...
BelgiumipConv Modbus TCP/IP, Master / IEC 60870-5-104, Slave / Telegyr 065, Master / Telegyr 102, Master / Telegyr 809, Master / Tracec 32, 62, 92, 92P, 122, 130 & 142 Master /
Storebælt, DenmarkStorebælt, Denmark
Details...
DenmarkipConv IEC 60870-5-104, Master / IEC 60870-5-104, Slave / Simatic TDC, Master / Modbus TCP/IP, Master /
SEC SVC, Saudi ArabiaSEC SVC, Saudi Arabia
Details...
Saudi ArabiaipConv IEC 60870-5-101, Slave / IEC 60870-5-104, Slave / IEC 61850, Client / Simatic TDC, Master /
BLS Lötschbergtunnel II, SwitzerlandBLS Lötschbergtunnel II, Switzerland
Details...
SwitzerlandipConv ipRoute IEC 60870-5-104, Master / IEC 60870-5-104, Slave / SNMP, Client /
BLS AlpTransit - LötschbergtunnelBLS AlpTransit - Lötschbergtunnel
Details...
SwitzerlandipConv ipRoute OPC DA 3.0, Server / IEC 60870-5-104, Slave / IEC 60870-5-101, Master / IEC 60870-5-104, Master / SNMP, Client /
Mainova Communication HubMainova Communication Hub
Details...
GermanyipConv OPC DAXML 1.01, Server / IEC 60870-5-104, Slave / IEC 60870-5-101, Master / Modbus, Master / SEAB 1F, Master /
Yunnan-Guangdong, ChinaYunnan-Guangdong, China
Details...
ChinaipConv IEC 60870-5-104, Slave / Simatic TDC, Master /
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