ISO/IEC 10192-1:2002

Information technology — Home Electronic System (HES) interfaces — Part 1: Universal Interface (UI) Class 1

This part of ISO/IEC 10192 is one of a set of standards describing the characteristics of a specific home control system called the Home Electronic System, HES. This standard specifies the characteristics of the Universal Interface Class 1 that connects devices to the home network in an HES for control applications. This standard informs as to the usefulness of the principles of a UI and forms a basis for new work in this field. NOTE This standard draws upon text from IEC 60870-5-1:1990 and IEC 60870-5-2:1992. 1.2 Application This standard specifies a generic interface for a device to connect to a home control network via a Network Adaptor Unit. The home control network signals may be carried on the cabling system being specified in ISO/IEC 150181.

Technologies de l'information — Interfaces de systèmes électroniques domestiques (HES) — Partie 1: Interface universelle (UI) classe 1

General Information

• Status: Published
• Publication Date: 05-Nov-2002
• ICS: 35.200 - Interface and interconnection equipment
• ICS: 35.240.99 - IT applications in other fields
• Technical Committee: ISO/IEC JTC 1/SC 25 - Interconnection of information technology equipment
• Drafting Committee: ISO/IEC JTC 1/SC 25 - Interconnection of information technology equipment
• Current Stage: 9093 - International Standard confirmed
• Completion Date: 13-Jul-2018

Relations

• Consolidated By: ISO 1346:2012 - Fibre ropes — Polypropylene split film, monofilament and multifilament (PP2) and polypropylene high-tenacity multifilament (PP3) — 3-, 4-, 8- and 12-strand ropes
• Effective Date: 06-Jun-2022

Standards Content (Sample)

INTERNATIONAL ISO/IEC
STANDARD
10192-1
First edition
2002-08
Information technology –
Home electronic system (HES) interfaces
Part 1:
Universal Interface (UI) Class 1
Reference number
ISO/IEC 10192-1:2002(E)

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INTERNATIONAL ISO/IEC
STANDARD
10192-1
First edition
2002-08
Information technology –
Home electronic system (HES) interfaces
Part 1:
Universal Interface (UI) Class 1
 ISO/IEC 2002
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any
means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher.
ISO/IEC Copyright Office Case postale 56 CH-1211 Genève 20 Switzerland
• • •
PRICE CODE
N
For price, see current catalogue

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CONTENTS
FOREWORD . 4
1 Scope and application . 5
1.1 Scope . 5
1.2 Application. 5
2 Normative references. 5
3 Definitions and abbreviations. 6
3.1 Definitions . 6
3.2 Abbreviations. 7
4 Principles of the UI.8
5 Connectors and cabling. 9
5.1 Mechanical characteristics . 9
5.1.1 UI NAU connector housing and connector. 9
5.1.2 UI cabling. 9
5.2 Electrical characteristics .11
5.2.1 UI NAU interface .11
5.2.2 Electrical signal.14
5.2.3 Power output.15
6 Procedural requirements .15
6.1 FT 1.2 Control field .16
6.1.1 Control field from primary station.16
6.1.2 Control field from secondary station .17
6.2 FT 1.2 Checksum field .17
6.3 FT 1.2 Field codification.17
6.4 FT 1.2 transmission rules.17
6.4.1 Frame with fixed length .17
6.4.2 Frame with variable length .18
6.4.3 Single character frame .18
6.5 Transmission procedure.18
6.6 Transmission errors .18
6.6.1 Error management .18
7 UI NAU resources for the UI.19
7.1 General .19
7.2 Local and destination addresses .19
7.3 Transmit and receive buffers.19
7.3.1 UI NAU registers .20
7.3.2 Status register (S_R).20
7.3.3 Function mode register (FM_R) .21
8 Command structure.21
8.1 Frame format FT 1.2 language structure .22
8.1.1 Management commands using fixed length .22
8.1.2 Frame with variable length .23
8.1.3 Control sequences specification .24
8.2 Command specifications .25
8.3 Command identifiers coding .28

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10192-1 © ISO/IEC:2002(E) – 3 –
9 UI operational procedure.28
9.1 Point-to-point communication link initialisation.28
9.2 Negotiation capabilities .29
9.2.1 Communication speed negotiation .29
9.2.2 Negotiation procedure .29
9.3 Polling message .30
Annex A (informative) Home control systems that do not provide power from the
network .31
Annex B (informative) Illustration of UI operational procedure .32
Figure 1 – UI connections in a home network providing a power feed service . 8
Figure 2 – UI cables .10
Figure 3 – NP UI cable .12
Figure 4 – SP UI cable.13
Figure 5 – Connection of an SPD to a home control network that does not provide power.13
Figure 6 – Test circuit for timing characteristics of optocouplers.15
Figure 7 – FT 1.2 frame format .16
Figure 8 – Transmit and receive buffers.19
Figure 9 – Status register .20
Figure 10 – Function mode register .21
Figure 11 – Communication speed parameter .29
Figure 12 – Negotiation procedure .29
Figure 13 – Polling message.30
Figure A.1 – Function mode register .31
Table 1 – Frame with fixed length .17
Table 2 – Frame with variable length .18
Table 3 – Single character frame .18

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INFORMATION TECHNOLOGY –
HOME ELECTRONIC SYSTEM (HES) INTERFACES –
Part 1: Universal Interface (UI) Class 1
FOREWORD
1) ISO (International Organization for Standardization) and IEC (International Electrotechnical Commission) form
the specialized system for worldwide standardization. National bodies that are members of ISO or IEC
participate in the development of International Standards through technical committees established by the
respective organization to deal with particular fields of technical activity. ISO and IEC technical committees
collaborate in fields of mutual interest. Other international organizations, governmental and non-governmental,
in liaison with ISO and IEC, also take part in the work.
2) In the field of information technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC1.
Draft International Standards adopted by the joint technical committee are circulated to national bodies for
voting. Publication as an International Standard requires approval by at least 75 % of the national bodies
casting a vote.
The International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC)
draw attention to the fact that the European Patent EP PS 0 344 609 B1 “Digital signal transmission system for
domestic application” may be needed to implement this International Standard.
ISO and IEC take no position concerning the evidence, validity and scope of patent rights. The European Patent
EP PS 0 344 609 B1 is held by Gebrüder Merten GmbH & Co. KG. Gebrüder Merten GmbH & Co. KG are willing to
negotiate licenses under reasonable and non-discriminatory terms and conditions with applicants throughout the
world. In this respect the statement of the holder of the patent rights is registered with the ISO and IEC. Information
may be obtained from:
Gebrüder Merten GmbH & Co. KG
Fritz-Kotz-Strasse 8 Wiehl
Postfach 100653
D 51606 Gummersbach
Telephone: [phone]
Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of
patent rights other than those identified above. ISO and IEC shall not be held responsible for identifying any or all
such patent rights.
International Standard ISO/IEC 10192-1 was prepared by subcommittee 25: Interconnection of
information technology equipment, of ISO/IEC joint technical committee 1: Information
technology.
This publication has been drafted in accordance with the ISO/IEC directives, part 2.
Annexes A and B are for information only.

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10192-1 © ISO/IEC:2002(E) – 5 –
INFORMATION TECHNOLOGY –
HOME ELECTRONIC SYSTEM (HES) INTERFACES –
Part 1: Universal Interface (UI) Class 1
1 Scope and application
1.1 Scope
This part of ISO/IEC 10192 is one of a set of standards describing the characteristics of a
specific home control system called the Home Electronic System, HES.
This standard specifies the characteristics of the Universal Interface Class 1 that connects
devices to the home network in an HES for control applications.
This standard informs as to the usefulness of the principles of a UI and forms a basis for new
work in this field.
NOTE This standard draws upon text from IEC 60870-5-1:1990 and IEC 60870-5-2:1992.
1.2 Application
This standard specifies a generic interface for a device to connect to a home control network
via a Network Adaptor Unit. The home control network signals may be carried on the cabling
1
system being specified in ISO/IEC 15018 .
2 Normative references
The following referenced documents are indispensable for the application of this document. For
dated references, only the edition cited applies. For undated references, the latest edition of
the referenced document (including any amendments) applies.
IEC 60227-2, Polyvinyl chloride insulated cables of rated voltages up to and including
450/750V – Part 2: Test methods
IEC 60364-1, Electrical installations of buildings - Part 1: Fundamental principles, assessment
of general characteristics, definitions
IEC 60603-7, Connectors for frequencies below 3 MHz for use with printed boards –
Part 7: Detail specification for connectors, 8-way, including fixed and free connectors with
common mating features, with assessed quality
IEC 60664-1, Insulation coordination for equipment within low-voltage systems – Part 1:
Principles, requirements and tests
IEC 60870-5-1:1990, Telecontrol equipment and systems – Part 5: Transmission protocols –
Section 1: Transmission frame formats
ISO/IEC 11801, Information technology – Generic cabling for customer premises

1
Information technology - Integrated cabling for residential and SOHO (Small Office, Home Office) environments
(under development).

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ISO/IEC TR 14543-1, Information technology – Home Electronic System (HES) Architecture –
Part 1: Introduction
ISO/IEC TR 15044, Information technology – Terminology for the Home Elecronic System
(HES)
3 Definitions and abbreviations
3.1 Definitions
For the purposes of this document the following definitions apply.
3.1.1
network powered device, NPD
device that derives its power from the network
[ISO/IEC TR 15044, definition 2.38]
3.1.2
self-powered device, SPD
device which derives its power from other sources than the network
[ISO/IEC TR 15044, definition 2.50]
3.1.3
UI adaptation
process of adapting a device or an NAU to the UI
[ISO/IEC TR 15044, definition 2.68]
3.1.4
UI cable
cable connecting with an UI device to a UI NAU. The UI connector on the NAU is normally
mounted in the wall
[ISO/IEC TR 15044, definition 2.69]
3.1.5
UI cable connector
standardized connector on a UI cable for connecting a UI device to a UI NAU
NOTE The device end of the cable may have a connector or be permanently attached to the device.
[ISO/IEC TR 15044, definition 2.70]
3.1.6
UI cable plug housing, UI CPH
connector housing for the NAU end of the UI cable
[ISO/IEC TR 15044, definition 2.71]
3.1.7
UI connector, UIC
connector on a UI NAU for connecting a UI device to a UI NAU
NOTE The UI connector is normally mounted in the wall.
[ISO/IEC TR 15044, definition 2.72]

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10192-1 © ISO/IEC:2002(E) – 7 –
3.1.8
UI device, UID
device supporting and offering a UI
NOTE If the context makes it clear that a device is a UI device, UI will normally be omitted from the term.
[ISO/IEC TR 15044, definition 2.73]
3.1.9
UI device connector
optional connector on a UI device for connection of a UI cable. The cable may instead be
permanently attached to the device
[ISO/IEC TR 15044, definition 2.74]
3.1.10
UI network access unit, UI NAU
NAU supporting and offering the universal interface
NOTE If the context makes it clear that the NAU is a UI NAU, UI is normally omitted.
[ISO/IEC TR 15044, definition 2.75]
3.1.11
universal interface, UI
standardized interface, placed on top of the network layer, between a home network and the
devices to be connected to it. The specification of the UI includes the necessary mechanical,
electrical, functional and procedural characteristics of the interface. Three classes of UIs are
defined corresponding to the three classes of home control systems
[ISO/IEC TR 15044, definition 2.76]
3.2 Abbreviations
The following abbreviations are used in this document.
EP UI NAU externally powered UI NAU
HES Home Electronic System
NAU network access unit
NP network powered
NPD network powered device
OSI Open Systems Interconnection
OSI/RM Open Systems Interconnection Reference Model
SP self-powered
SPD self-powered device
UI Universal Interface
UIC UI connector
UID UI device

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4 Principles of the UI
In principle the UI is placed above layer 3 (network layer) in the OSI/RM stack. It provides a
standardized interface between the home network on one side and the devices on the other
side. The UI is connected to a home network via the UI Network Access Unit (NAU). The
mechanical, electrical, functional and procedural characteristics of the UI itself are
standardized in this document, but the NAU is not standardized. This makes it possible to
provide specific NAUs that fit specific home networks on the market. The NAU, however, shall
supply the HES Network Service standardized in ISO/IEC 14543-1 to the device connected to
it. In an HES the UI will also pass transparently the HES Application Protocol standardized in
ISO/IEC 14543-1. The NAU shall also contain implementations of layers 1 and 2 for the local
network. The UI connected to a network based on wired (metallic) media always provides a
limited amount of electrical power from the home network system to the connected device.
NOTE For completeness, Annex A defines an NAU for those home control networks that do not provide electrical
power (e.g. Infra-red, Radio-frequency etc.).
Specifications of the UI adaptation are under some aspects different in the case in which the UI
device does or does not use the power feed provided by the UI NAU. Consequently, two
different types of connection between an UI NAU and an UI device are defined. The block
diagrams of the two connection types are shown in Figure 1.
External
power supply
Network powered Self-powered
device
device
Not
used
Power Power
Data Data
output transmission transmission
output
UI NAU
UI NAU
UI Layer 1 UI Layer 1
UI Layer 2 UI Layer 2
Local UI layers
UI Layer 3 UI Layer 3
Layer 3 Layer 3
Layer 2 Layer 2
Home network layers
Layer 1 Layer 1
Home network
Figure 1 – UI connections in a home network providing a power-feed service

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10192-1 © ISO/IEC:2002(E) – 9 –
5 Connectors and cabling
5.1 Mechanical characteristics
5.1.1 UI NAU connector housing and connector
5.1.1.1 UI NAU connector housing
The UI NAU connector housing is a mechanical adapter that can be fitted into an electrical box
or be surface mounted. It contains a socket that should meet IEC 60603-7.
5.1.1.2 UI NAU connector
The electrical and mechanical characteristics of the UI NAU connector shall conform to
IEC 60603-7.
The UI NAU jack connector shall accept both the connection to a UI cable connector and to a
UI cable connector housing, as shown in figure 4.
5.1.2 UI cabling
The UI cable connects a UI device (NP device or SP device) to a UI NAU. Different UI cables
are specified for the two types of connection, see Figure 2.
The maximum cable lengths defined for the NP and SP connection are:
NP Device connection: maximum cable length, L = 2 m
SP Device connection: maximum cable length, L = 10 m

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NAU
connector
housing
Home network
NPD UI
Maximum length: 2 m
Standard latch
Network powered device
NPD UI cable
Plug connector
NPD
NAU connector
UI device
housing
termination
Network powered device
NPD UI cable
NPD UI cable connector housing
Plug connector
NAU connector housing
SPD UI
Maximum length: 10 m
Self-powered
device
SPD UI cable
SPD UI cable connector housing
Electrical box
SPD UI cable connector
UI NAU Plug connector
jack connector
Figure 2 – UI cables
The UI cable (see Figure 2) will be mechanically retained in the NAU connector housing by
– the standard plug connector latch in the case in which no UI cable connector housing is
used,
– a latch built into the UI cable connector housing when this is used.
In this second case the standard plug connector latch no longer operates.
5.1.2.1 UI cable connectors
The terminations of the UI cables for UI NAU and UI device ends are specified below for both
types of connection.
NP device connection: the NP UI cable could terminate at the UI NAU end with a plug
connector to mate the UI NAU socket specified in 5.1.1, or with a UI cable connector housing.
The connector housing shall provide the mechanical characteristics and the plug connector to
mate the outlet specified in 5.1.1. The UI cable can terminate at the UI device end with a
connector or be permanently attached to the UI device.
SP device connection: the SP UI cable terminates at the UI NAU end with a UI cable connector
housing that shall provide the mechanical characteristics and the plug connector to mate the
outlet specified in 5.1.1.

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10192-1 © ISO/IEC:2002(E) – 11 –
The UI cable can terminate at the UI device end with a connector or be permanently attached
to the UI device.
The electrical characteristics and the mechanical characteristics shall conform to IEC 60603-7.
The mechanical and electrical characteristics of the UI connector shall conform to the
specifications given in IEC 60603-7.
5.1.2.2 UI cable
The recommended characteristics for the UI cable are specified below.
NP UI cable: 2 pairs unshielded twisted pairs
SP UI cable: 3 pairs unshielded twisted pairs
Characteristics:
Conductor wire 0,65 mm diameter
Conductor material Copper
Insulation material Polyethylene
Jacket material Flame Retardant Polyvinyl Chloride
Rip Cord material Polyamide
For electrical characteristics, see ISO/IEC 11801.
NOTE Different colours shall be used to identify the cable conductors.
For the UI cable an additional High-Voltage insulation test between all cores connected
together and the outer surface shall be considered, as specified in IEC 60227-2.
5.2 Electrical characteristics
5.2.1 UI NAU interface
5.2.1.1 NP device connection
SELV or PELV requirements, as specified in IEC 60364-1, shall be fulfilled both at the UI NAU
outlet and at the UI device connection. (See Figure 1.)
No electrical isolation between UI NAU and the UI network powered device is required.

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UI cable connector UI device
housing
RES
NC 1 RES RES 1
RES
void 2 void
2 void
void
3 Gnd1
3 Gnd1 Gnd1
Gnd1
TP 1
4 4 TxDev
RxD RxD
RxD
5 V
5 V V in
out out
V
out
TP 2
6 RxDev
6 TxD TxD
TxD
void
void void 7
7
void
RES
NC 8 RES RES 8
RES
UIC modified UIC modified
UIC modified Jack UI cable
plug plug
plug
NP UI cable
connector
Unshielded
RES : Reseved (see Annex A) twisted-pair wires
NC : Internally not connected
RES RES
1
void void 2
Gnd1 Gnd1 3
TP 1
RxD RxD 4
V V 5
out out
TP 2
TxD TxD 6
void void
7
RES RES
8
UIC modified UIC modified
plug plug
Figure 3 – NP UI cable
NOTE The void positions in the connectors should provide the necessary electrical isolation when an EP UI NAU
is used in a home control network that does not provide power-feed service (see Annex A). Optionally twisted pairs
(TP3) could be connected to the RES pins.
5.2.1.2 SP device connection
The UI Self-Powered Device shall provide a SELV interface, as specified in IEC 60364-1, to
offer a safety electrical connection to a SP UI cable connector housing, see Figure 4 and
Figure 5. An isolating transceiver shall be provided between UI NAU and the UI Self-Powered
Device in order to protect the HES from fault conditions.

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10192-1 © ISO/IEC:2002(E) – 13 –
SP UI cable connector housing
UI device
NC RES
1
RES
2 void
void
TxDD 1 TxDD 1
3 Gnd1
Gnd1
TP 1
Gnd2 Gnd2
4 RxD 2 2
RxD
3 3
RxDH RxDH
5 V
out V
out
TP 2
RxDL 4 RxDL 4
6 TxD
TxD
7 void RES RES
void 5 5
TP 3
NC
8 RES
RES RES RES
6 6
UIC modified jack UI cable plug
MP6 plug MJ6 jack
connector
RES: Reseved (see Annex A)
NC: internally not connected
Gnd2: SP device ground
UI cable
UI cable plug connector
Cable
Unshielded twisted pairs
Note: Notional isolating circuit only.
Figure 4 – SP UI cable
NOTE The TP3 pair allows the connection of a SP Device to an home control network that does not provide power
using the same SP UI cable as described in Annex A. The void positions in the UI socket should provide the
necessary electrical isolation, as given in IEC 60664-1, when this type of connection is used.
UI NAU connector housing
SPD
SP UI cable
Home network
without power feed service
SP UI cable connector with
optocouplers
Figure 5 – Connection of an SPD to a home control network that does not provide power

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5.2.2 Electrical signal
The UI NAU shall provide sufficient driving capability in order to generate the appropriate signal
level for the NP and SP connections.
The general relation between logic and voltage levels is:
Logic level Voltage level
0 (False) ≤1,5 V
1 (True) ≥3,5 V
Driver specifications (CMOS compatible V = 5 V):
DD
V ≤ +0,2 V
OL
V ≥ +4,6 V
OH
Receiver specifications
(CMOS compatible ≤V = 5 V):
DD
V ≤ +1,5 V
IL
V ≥ +3,5 V
IH
In the SP connection, the drivers of the optocouplers shall translate the input logic to a current
signal suitable for driving a light emitting diode (LED). The general relation between output
logic levels and LED forward current is:
Logic level Current level
0 (False/Busy)
≥3 mA
1 (True/Idle) 0 mA
The SP device receivers provide the reverse function of an optocoupler’s driver where the
output of the phototransistor is detected and restored to a logic level.
5.2.2.1 Response time
The switching time of the optocoupler is a function of
a) the forward current,
b) the load resistor of the phototransistor,
c) and the load capacitance.
The typical timing characteristics of the optocouplers are generally specified in graphical form
as a function of:
turn on time t (μs) = f(I ,R )
on F L
turn off time t (μs) = f(I ,R )
off F L
rise time t (μs) = f(I ,R )
rise
F L
fall time t (μs) = f(I ,R )
fall
F L
where I is the LED input forward current and R is the phototransistor load.
F L

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10192-1 © ISO/IEC:2002(E) – 15 –
5.2.2.2 Switching times
The specified typical timing characteristics of the optocouplers are measured with the test
circuit as given in Figure 6.
Test circuit Waveforms
V
cc
R
L
I
F
Input pulse
T
Output
Input Bit time
GND
10 %
Output pulse
90 %
t
t
rise
fall
t
off t
on
Figure 6 – Test circuit for timing characteristics of optocouplers
The required switching times shall be adequate for the chosen maximum allowed transmission
speed. Suggested maximum values for rise time (t ) and fall time (t ) are 0,2 % of the bit
rise fall
time T. Allowed clock tolerance shall be ±1 %.
5.2.3 Power output
The power output requirements through the UI NAU, when an NP connection is used to
connect a UI NPD, shall be:
• V = 5 V d.c. + 10 %
out
• I ≥ 10 mA
out
• Ripple and noise voltage ≤ 100 mV
6 Procedural requirements
The UI NAU and UI device shall support full duplex and half duplex communication. During the
normal operation mode the UI NAU and the UI device shall use the same protocol based on
IEC 60870-5-1:1990 and IEC 60870-5-2:1992. This standard has been designed for a “point-to-
point” communications protocol. The UI NAU and the UI device may act as a primary station
(initiating a message transfer) or as a secondary station (receiving a message). The point-to-
point communication between the UI NAU and the UI device support only the FT 1.2 frame
format without address field as described in IEC 60870-5-2. (See Figure 7.)

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Frame with a fixed length
USER DATA USER DATA END 16H
START 10H CONTROL CHECKSUM
Frame with a variable length
USER DATA USER DATA END 16H
START 68H LENGTH LENGTH START 68H CONTROL USER DATA CHECKSUM
L
FRAME HEADER
Single character ACK
ACK E5H
Figure 7 – FT 1.2 frame format
The frame with fixed length consists of a START character, a CONTROL character, two USER
DATA bytes, a frame CHECKSUM character and an END character. The frame with variable
length consists of a START character, two equal LENGTH characters which specify the
number L of USER DATA bytes plus a CONTROL character, a second START character, a
CONTROL character, a number L of USER DATA bytes, a frame CHECKSUM character and an
END character. The single character ACK is used for a positive acknowledgement.
6.1 FT 1.2 Control field
The control field contains information that characterizes
• the direction of the communication link (UI NAU to UI device or UI device to UI NAU),
• the type of service requested,
• the control functions for suppressing losses or duplications of frames.
6.1.1 Control field from primary station
MSB
LSB
RES
PRM FCB FCV FUNCTION
0
3 2 1
1 2 2 2
2
Function used:
Function code Frame type Frame function FCV
0 Send/Confirm Reset of the communication
...