IEC 62386-102:2022

Digital addressable lighting interface - Part 102: General requirements - Control gear

IEC 62386-102:2022 is applicable to control gear for control by digital signals of electronic lighting equipment. This third edition cancels and replaces the second edition published in 2014 and Amendment 1:2018. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
the scope has been updated;
references have been updated;
memory bank reading of multi-byte values has been added;
memory bank 0 and common memory bank requirements have been updated;
reserved memory banks have been updated;
non-volatile memory (NVM) save time has been added, and SAVE PERSISTENT VARIABLES removed;
version number has been updated;
bus unit configuration has been added.

Interface d'éclairage adressable numérique - Partie 102: Exigences générales - Appareillages de commande

L'IEC 62386-102 s'applique aux appareillages de commande par signaux numériques des équipements d'éclairage électroniques. Cette troisième édition annule et remplace la seconde édition parue en 2014 et l'Amendement 1:2018. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
le domaine d'application a été mis à jour;
les références ont été mises à jour;
la lecture dans le bloc de mémoire de valeurs à plusieurs octets a été ajoutée;
le bloc de mémoire 0 et les exigences communes pour les blocs de mémoire ont été mis à jour;
les blocs de mémoire réservés ont été mis à jour;
la durée de sauvegarde de la mémoire non volatile (NVM) a été ajoutée, et la commande SAVE PERSISTENT VARIABLES a été supprimée;
le numéro de version a été mis à jour;
la configuration de l'unité de bus a été ajoutée.

General Information

• Status: Published
• Publication Date: 15-Nov-2022
• ICS: 29.140.50 - Lighting installation systems
• ICS: 29.140.99 - Other standards related to lamps
• Technical Committee: TC 34 - Lighting
• Drafting Committee: WG 11 - TC 34/WG 11
• Current Stage: PPUB - Publication issued
• Start Date: 16-Nov-2022
• Completion Date: 02-Dec-2022

Relations

• Revises: IEC 62386-102:2014 - Digital addressable lighting interface - Part 102: General requirements - Control gear
• Effective Date: 05-Sep-2023
• Revises: IEC 62386-102:2014/AMD1:2018 - Amendment 1 - Digital addressable lighting interface - Part 102: General requirements - Control gear
• Effective Date: 05-Sep-2023

Overview

IEC 62386-102:2022 is Part 102 of the IEC 62386 series for the Digital Addressable Lighting Interface (DALI). This third edition defines the general requirements for control gear that are controlled by digital signals in electronic lighting equipment. It updates the previous edition (2014 + Amendment 2018) and introduces technical revisions such as updated scope and references, added memory bank reading of multi-byte values, revised memory bank rules, non‑volatile memory (NVM) save time, and added bus unit configuration. This standard underpins reliable, interoperable DALI control gear design and operation.

Key Topics and Technical Requirements

• Scope and general requirements for DALI control gear (electronic drivers and modules).
• Electrical specification and interface bus power supply requirements to ensure safe, stable operation.
• Transmission protocol structure and timing (including 16‑bit frame encoding, address and opcode definitions).
• Method of operation: control gear phases, dimming curves, calculating target levels, fading, fade rate and extended fade time behavior.
• Memory banks: memory map, selecting, reading/writing, memory bank 0, protectable locations, optional and manufacturer-specific banks, and reserved memory banks.
• Non-volatile memory (NVM) behavior including NVM save time and persistence of variables. Note: the SAVE PERSISTENT VARIABLES instruction has been removed in this edition.
• Commands and queries: level instructions (ON/OFF/UP/DOWN/STEP), configuration instructions (reset, set levels, scenes), and status queries.
• Assigning short addresses, scene management and current bus unit configuration for commissioning and runtime control.
• Failure modes, reset behavior, power-on levels, and status reporting for robust system diagnostics.

Practical Applications

IEC 62386-102:2022 is essential for:

• Lighting control gear manufacturers designing DALI-compliant drivers, LED modules, and control interfaces.
• Firmware and hardware engineers implementing protocol stacks, memory management and fade/dimming algorithms.
• System integrators and lighting designers who need predictable device behavior for commissioning scenes and groups.
• Test labs and compliance bodies validating interoperability, electrical safety and protocol conformance.
• Specifiers and project managers writing procurement and installation specifications for smart lighting systems.

Related Standards

• Other parts of the IEC 62386 (DALI) series cover device types, physical layers and application controllers.
• DALI/IEC ecosystem documents (e.g., DALI-2 profiles) provide complementary device and system-level interoperability guidance.

Keywords: IEC 62386-102:2022, DALI, digital addressable lighting interface, control gear, memory banks, NVM save time, fade time, transmission protocol, bus unit configuration.

Standards Content (Sample)

IEC 62386-102 ®
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Digital addressable lighting interface –
Part 102: General requirements – Control gear
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IEC 62386-102 ®
Edition 3.0 2022-11
COMMENTED VERSION
INTERNATIONAL
STANDARD
colour
inside
Digital addressable lighting interface –
Part 102: General requirements – Control gear
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.140.50; 29.140.99 ISBN 978-2-8322-6103-3

– 2 – IEC 62386-102:2022 CMV © IEC 2022
CONTENTS
FOREWORD .7
INTRODUCTION . 10
1 Scope . 12
2 Normative references . 12
3 Terms and definitions . 12
4 General . 15
4.1 General . 15
4.2 Version number . 15
5 Electrical specification . 16
6 Interface Bus power supply . 16
7 Transmission protocol structure . 16
7.1 General . 16
7.2 16-bit forward frame encoding . 16
7.2.1 General . 16
7.2.2 Address byte . 16
7.2.3 Opcode byte . 17
8 Timing . 17
9 Method of operation . 17
9.1 General . 17
9.2 Control gear . 17
9.2.1 General . 17
9.2.2 Control gear phases . 17
9.3 Dimming curve . 18
9.4 Calculating "targetLevel" . 22
9.5 Fading . 22
9.5.1 General . 22
9.5.2 Fade time . 23
9.5.3 Fade rate . 25
9.5.4 Extended fade time . 26
9.5.5 Using the fade time . 28
9.5.6 Using the fade rate . 28
9.5.7 System response to changes during a fade . 29
9.5.8 System response to changes during standby and startup . 29
9.5.9 Stopping a fade . 29
9.6 Min and max level . 29
9.7 Commands . 30
9.7.1 General . 30
9.7.2 Level instructions without fade . 31
9.7.3 Level instructions initiating a fade . 31
9.7.4 Configuration instructions . 31
9.7.5 Queries . 31
9.7.6 Special commands . 31
9.7.7 Application extended commands . 31

9.8 Command iterations . 32
9.8.1 General . 32
9.8.2 Command iteration of "UP" and "DOWN" commands . 32
9.8.3 DAPC SEQUENCE (deprecated) . 32
9.9 Modes of operation . 33
9.9.1 General . 33
9.9.2 Operating mode 0x00: standard mode . 33
9.9.3 Operating mode 0x01 to 0x7F: reserved . 33
9.9.4 Operating mode 0x80 to 0xFF: manufacturer-specific modes . 33
9.10 Memory banks . 34
9.10.1 General . 34
9.10.2 Memory map . 34
9.10.3 Selecting a memory bank location . 35
9.10.4 Protectable memory locations . 35
9.10.5 Memory bank reading . 36
9.10.6 Memory bank writing . 37
9.10.7 Memory bank 0 . 38
9.10.8 Memory bank 1 (optional) . 41
9.10.9 Manufacturer-specific memory banks . 43
9.10.10 Reserved memory banks . 43
9.11 Reset . 43
9.11.1 Reset operation . 43
9.11.2 Reset memory bank operation. 43
9.12 System failure . 44
9.13 Power on . 44
9.14 Assigning short addresses . 45
9.14.1 General . 45
9.14.2 Random address allocation . 45
9.14.3 Identification of a device . 46
9.14.4 Direct address allocation . 47
9.15 Failure state behaviour . 47
9.16 Status information . 47
9.16.1 General . 47
9.16.2 Bit 0: Control gear failure . 48
9.16.3 Bit 1: lamp failure . 48
9.16.4 Bit 2: lamp on . 50
9.16.5 Bit 3: limit error. 50
9.16.6 Bit 4: fade running . 50
9.16.7 Bit 5: reset state . 50
9.16.8 Bit 6: missing short address . 50
9.16.9 Bit 7: power cycle seen . 50
9.17 Non-volatile memory . 50
9.18 Device types and features . 51
9.19 Using scenes . 51
9.20 Current bus unit configuration . 52
10 Declaration of variables . 53

– 4 – IEC 62386-102:2022 CMV © IEC 2022
11 Definition of commands . 56
11.1 General . 56
11.2 Overview sheets . 56
11.3 Level instructions. 61
11.3.1 DAPC (level) . 61
11.3.2 OFF . 61
11.3.3 UP . 61
11.3.4 DOWN . 61
11.3.5 STEP UP. 62
11.3.6 STEP DOWN . 62
11.3.7 RECALL MAX LEVEL . 62
11.3.8 RECALL MIN LEVEL . 63
11.3.9 STEP DOWN AND OFF . 63
11.3.10 ON AND STEP UP . 63
11.3.11 ENABLE DAPC SEQUENCE . 64
11.3.12 GO TO LAST ACTIVE LEVEL . 64
11.3.13 CONTINUOUS UP . 64
11.3.14 CONTINUOUS DOWN . 64
11.3.15 GO TO SCENE (sceneNumber) . 64
11.4 Configuration instructions . 64
11.4.1 General . 64
11.4.2 RESET . 65
11.4.3 STORE ACTUAL LEVEL IN DTR0 . 65
11.4.4 SAVE PERSISTENT VARIABLES .
11.4.4 SET OPERATING MODE (DTR0) . 65
11.4.5 RESET MEMORY BANK (DTR0) . 65
11.4.6 IDENTIFY DEVICE . 65
11.4.7 SET MAX LEVEL (DTR0). 66
11.4.8 SET MIN LEVEL (DTR0) . 66
11.4.9 SET SYSTEM FAILURE LEVEL (DTR0) . 66
11.4.10 SET POWER ON LEVEL (DTR0) . 67
11.4.11 SET FADE TIME (DTR0) . 67
11.4.12 SET FADE RATE (DTR0) . 67
11.4.13 SET EXTENDED FADE TIME (DTR0) . 67
11.4.14 SET SCENE (DTR0, sceneX) . 68
11.4.15 REMOVE FROM SCENE (sceneX) . 68
11.4.16 ADD TO GROUP (group) . 68
11.4.17 REMOVE FROM GROUP (group) . 68
11.4.18 SET SHORT ADDRESS (DTR0). 68
11.4.19 ENABLE WRITE MEMORY . 69
11.5 Queries . 69
11.5.1 General . 69
11.5.2 QUERY STATUS . 69
11.5.3 QUERY CONTROL GEAR PRESENT . 69
11.5.4 QUERY CONTROL GEAR FAILURE . 69
11.5.5 QUERY LAMP FAILURE . 69
11.5.6 QUERY LAMP POWER ON . 69

11.5.7 QUERY LIMIT ERROR. 69
11.5.8 QUERY RESET STATE . 69
11.5.9 QUERY MISSING SHORT ADDRESS . 69
11.5.10 QUERY VERSION NUMBER . 70
11.5.11 QUERY CONTENT DTR0 . 70
11.5.12 QUERY DEVICE TYPE . 70
11.5.13 QUERY NEXT DEVICE TYPE . 70
11.5.14 QUERY PHYSICAL MINIMUM . 70
11.5.15 QUERY POWER FAILURE. 71
11.5.16 QUERY CONTENT DTR1 . 71
11.5.17 QUERY CONTENT DTR2 . 71
11.5.18 QUERY OPERATING MODE . 71
11.5.19 QUERY LIGHT SOURCE TYPE . 71
11.5.20 QUERY ACTUAL LEVEL . 72
11.5.21 QUERY MAX LEVEL. 72
11.5.22 QUERY MIN LEVEL . 72
11.5.23 QUERY POWER ON LEVEL . 72
11.5.24 QUERY SYSTEM FAILURE LEVEL . 72
11.5.25 QUERY FADE TIME/FADE RATE . 72
11.5.26 QUERY EXTENDED FADE TIME . 72
11.5.27 QUERY MANUFACTURER SPECIFIC MODE . 72
11.5.28 QUERY SCENE LEVEL (sceneX) . 72
11.5.29 QUERY GROUPS 0-7 . 73
11.5.30 QUERY GROUPS 8-15 . 73
11.5.31 QUERY RANDOM ADDRESS (H) . 73
11.5.32 QUERY RANDOM ADDRESS (M) . 73
11.5.33 QUERY RANDOM ADDRESS (L) . 73
11.5.34 READ MEMORY LOCATION (DTR1, DTR0) . 73
11.6 Application extended commands . 73
11.6.1 General . 73
11.6.2 QUERY EXTENDED VERSION NUMBER . 74
11.7 Special commands. 74
11.7.1 General . 74
11.7.2 TERMINATE . 74
11.7.3 DTR0 (data) . 74
11.7.4 INITIALISE (device) . 74
11.7.5 RANDOMISE . 75
11.7.6 COMPARE . 75
11.7.7 WITHDRAW . 75
11.7.8 SEARCHADDRH (data) . 75
11.7.9 SEARCHADDRM (data). 76
11.7.10 SEARCHADDRL (data) . 76
11.7.11 PROGRAM SHORT ADDRESS (data) . 76
11.7.12 VERIFY SHORT ADDRESS (data) . 76
11.7.13 QUERY SHORT ADDRESS. 76
11.7.14 ENABLE DEVICE TYPE (data) . 77
11.7.15 DTR1 (data) . 77
11.7.16 DTR2 (data) . 77

– 6 – IEC 62386-102:2022 CMV © IEC 2022
11.7.17 WRITE MEMORY LOCATION (DTR1, DTR0, data) . 77
11.7.18 WRITE MEMORY LOCATION – NO REPLY (DTR1, DTR0, data) . 78
11.7.19 PING . 78
12 Test procedures .

Annex A (informative) Examples of algorithms. 79
A.1 Random address allocation . 79
A.2 One single control gear connected to the control device . 79
A.3 Using application extended commands . 80
Annex B (normative) High resolution dimmer . 81
Bibliography . 83
List of comments . 84

Figure 1 – IEC 62386 graphical overview . 11
Figure 2 – Control gear directly operating a light source . 17
Figure 3 – Dimming curve . 19
Figure 4 – Level over time, fading up and down . 23
Figure 5 – Timing and response when executing command iteration . 32
Figure 6 – Correlation between "lampFailure", "lampOn" and "fadeRunning" bits . 49
Figure B.1 – Level behaviour in case of off-grid starting points . 82

Table 1 – 16-bit command frame encoding . 16
Table 2 – Dimming curve tolerance . 20
Table 3 – Dimming curve . 21
Table 4 – Fade times. 25
Table 5 – Fade rates . 25
Table 6 – Extended fade time – Base value. 27
Table 7 – Extended fade time – Multiplier . 27
Table 8 – Memory types . 34
Table 9 – Basic memory map of memory banks . 35
Table 10 – Memory map of memory bank 0 . 38
Table 11 – Memory map of memory bank 1 . 42
Table 12 – Power on timing . 45
Table 13 – Control gear status . 47
Table 14 – Scenes . 52
Table 15 – Current bus unit configuration . 53
Table 16 – Declaration of variables . 53
Table 17 – Standard commands . 56
Table 18 – Special commands . 60
Table 19 – Light source type encoding . 71
Table 20 – Device addressing with "INITIALISE (device)" . 74

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
DIGITAL ADDRESSABLE LIGHTING INTERFACE –

Part 102: General requirements – Control gear

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
This commented version (CMV) of the official standard IEC 62386-102:2022 edition 3.0
allows the user to identify the changes made to the previous IEC 62386-102:2014+
AMD1:2018 CSV edition 2.1. Furthermore, comments from IEC TC 34 experts are
provided to explain the reasons of the most relevant changes, or to clarify any part of
the content.
A vertical bar appears in the margin wherever a change has been made. Additions are in
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This publication contains the CMV and the official standard. The full list of comments is
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– 8 – IEC 62386-102:2022 CMV © IEC 2022
IEC 62386-102 has been prepared by IEC technical committee 34: Lighting. It is an
International Standard.
This third edition cancels and replaces the second edition published in 2014 and
Amendment 1:2018. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
• the scope has been updated;
• references have been updated;
• memory bank reading of multi-byte values has been added;
• memory bank 0 and common memory bank requirements have been updated;
• reserved memory banks have been updated;
• non-volatile memory (NVM) save time has been added, and SAVE PERSISTENT
VARIABLES removed;
• version number has been updated;
• bus unit configuration has been added.
The text of this International Standard is based on the following documents:
Draft Report on voting
34/948/FDIS 34/989/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement,
available at www.iec.ch/members_experts/refdocs. The main document types developed by
IEC are described in greater detail at www.iec.ch/standardsdev/publications.
This Part 102 of IEC 62386 is intended to be used in conjunction with Part 101, which
contains general requirements for the relevant product type (system), and with the appropriate
Part 2xx (particular requirements for control gear) containing clauses to supplement or modify
the corresponding clauses in Part 101 and Part 102 in order to provide the relevant
requirements for each type of product.
A list of all parts in the IEC 62386 series, published under the general title Digital addressable
lighting interface, can be found on the IEC website.

The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The "colour inside" logo on the cover page of this document indicates that it
contains colours which are considered to be useful for the correct understanding of its
contents. Users should therefore print this document using a colour printer.

– 10 – IEC 62386-102:2022 CMV © IEC 2022
INTRODUCTION
IEC 62386 contains several parts, referred to as series. The IEC 62386 series specifies a bus
system for control by digital signals of electronic lighting equipment. The IEC 62386-1xx
series includes the basic specifications. Part 101 contains general requirements for system
components, Part 102 extends this information with general requirements for control gear and
Part 103 extends it further with general requirements for control devices. Part 104 and
Part 105 can be applied to control gear or control devices. Part 104 gives requirements for
wireless and alternative wired system components. Part 105 describes firmware transfer.
Part 150 gives requirements for an auxiliary power supply which can be stand-alone, or built
into control gear or control devices.
The IEC 62386-2xx series extends the general requirements for control gear with lamp
specific extensions (mainly for backward compatibility with Edition 1 of IEC 62386) and with
control gear specific features.
The IEC 62386-3xx series extends the general requirements for control devices with input
device specific extensions describing the instance types as well as some common features
that can be combined with multiple instance types.
This second third edition of IEC 62386-102 is intended to be used in conjunction with
IEC 62386-101:2014 and IEC 62386-101:2014/AMD1:2018 and with the various parts that
make up the IEC 62386-2xx series for control gear, and can be used together with IEC 62386-
103:2014 and IEC 62386-103:2014/AMD1:2018 and the various parts that make up the
IEC 62386-3xx series of particular requirements for control devices. The division into
separately published parts provides for ease of future amendments and revisions. Additional
requirements will be added as and when a need for them is recognised.
The setup of the standards is graphically represented in Figure 1 below.

2xx 2xx 2xx 2xx 2xx 3xx 3xx 3xx 3xx 3xx
102 General requirements - 103 General requirements -
Control gear Control devices
101 General requirements -
System components
IEC
Figure 1 – IEC 62386 graphical overview 1
When this part of IEC 62386 refers to any of the clauses of the other two parts of the
IEC 62386-1xx series, the extent to which such a clause is applicable and the order in which
the tests are to be performed are is specified. The other parts also include additional
requirements, as necessary.
All numbers used in this document are decimal numbers unless otherwise noted. Hexadecimal
numbers are given in the format 0xVV, where VV is the value. Binary numbers are given in
the format XXXXXXXXb or in the format XXXX XXXX, where X is 0 or 1 and "x" in binary
numbers means "don't care".
The following typographic expressions are used:
Variables: variableName or variableName[3:0], giving only bits 3 to 0 of variableName;
Range of values: [lowest, highest];
Command: "COMMAND NAME".
– 12 – IEC 62386-102:2022 CMV © IEC 2022
DIGITAL ADDRESSABLE LIGHTING INTERFACE –

Part 102: General requirements – Control gear

1 Scope
This part of IEC 62386 is applicable to control gear in a bus system for control by digital
signals of electronic lighting equipment which is in line with the requirements of IEC 61347 (all
parts), with the addition of DC supplies.
NOTE Tests in this standard are type tests. Requirements for testing individual control gear
during production are not included.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their
content constitutes requirements 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 62386-101:20142022, Digital addressable lighting interface – Part 101: General
requirements – System components
IEC 62386-101:2014/AMD1:2018
IEC 62386-103:20142022, Digital addressable lighting interface – Part 103: General
requirements – Control devices
IEC 62386-103:2014/AMD1:2018
IEC 62386-2xx (all parts), Digital addressable lighting interface – Part 2xx: Particular
requirements for control gear
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 62386-101 and the
following apply.
ISO and IEC maintain terminology databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
actual level
value representing the current light output
3.2
arc power
power supplied to the light sources (lamps)
3.3
broadcast
type of address used to simultaneously address all control gear in the system at once

3.4
broadcast unaddressed
type of address used to simultaneously address all control devices gear in the system that
have no short address at once
3.5
DAPC
direct arc power control
method to directly control the light output
Note 1 to entry: The note to entry in French concerns the French text only.
3.6
DTR
data transfer register
multipurpose register used to exchange data
Note 1 to entry: The note to entry in French concerns the French text only.
3.7
group address
type of address used to address a group of control gear in the system all at once
3.8
GTIN
global trade item number
number used for the unique identification of trade items worldwide
Note 1 to entry: For further information see http://en.wikipedia.org/wiki/GTIN.
Note 2 to entry: The global trade item number is comprised of a GS1 or U.P.C. company prefix followed by an
item reference number and a check digit. It is described in the "GS1 General Specifications" (see [1]).
Note 3 to entry: The note 3 to entry in French concerns the French text only.
3.9
identification
temporary state used during commissioning that allows the installer to identify particular
control gear
3.10
level
8-bit value
3.11
MASK
the value 0Xff
value with all binary digits set to 1
Note 1 to entry: This means that an 8-bit backward frame of MASK is a value of 0xFF, and a multi-byte memory
location of 24 bits containing MASK is a value of 0xFFFFFF.
3.12
monotonic
a function f defined on a subset of the real numbers with real values is called monotonically
non-decreasing, if for all x and y such that x ≤ y one has f(x) ≤ f(y), so f preserves the order.
Likewise, a function is called monotonically non-increasing if, whenever x ≤ y, then f(x) ≥ f(y),
so it reverses the order. For this standard monotonic is defined as either monotonically non-
decreasing or monotonically non-increasing

– 14 – IEC 62386-102:2022 CMV © IEC 2022
3.12
NO
answer used to deny or refuse to a query where no backward frame is sent
Note 1 to entry: If a query is asked where the answer is NO, there will be no response, such that the sender of
the query will conclude "no backward frame" following IEC 62386-101:2014 and IEC62386-
101:2014/AMD1:20182022, 8.2.5.
Note 2 to entry: The answer NO could also be triggered by a missed query.
3.13
NVM
non-volatile memory
non-volatile read/write memory, the content of which can be changed and will not be lost due
to a power cycle
3.14
NVM-RO
NVM that cannot be written using any command
3.15
NVM-RW
NVM that can be modified using one or more commands
3.16
opcode
operation code
part of a forward frame that identifies the command to be executed
3.17
operating mode
set of states identified by a number in the range [0,255], characterised by a collection of
variables and memory settings, and used to select a set of functionalities to be exhibited by a
control gear, including its required reaction to commands
Note 1 to entry: Control gear may can support more than one operating mode.
3.18
PHM
physical minimum level
level corresponding to the minimum light output the control gear can operate at
3.19
RAM
volatile read/write memory, the content of which can be changed and will be lost due to a
power cycle
3.20
RAM-RO
RAM that cannot be written using any command
3.21
RAM-RW
RAM that can be modified using one or more commands
3.22
random address
random 24-bit number gen
...

IEC 62386-102 ®
Edition 3.0 2022-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Digital addressable lighting interface –
Part 102: General requirements – Control gear

Interface d'éclairage adressable numérique –
Partie 102: Exigences générales – Appareillages de commande

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IEC 62386-102 ®
Edition 3.0 2022-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Digital addressable lighting interface –

Part 102: General requirements – Control gear

Interface d'éclairage adressable numérique –

Partie 102: Exigences générales – Appareillages de commande

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.140.50; 29.140.99 ISBN 978-2-8322-5965-8

– 2 – IEC 62386-102:2022 © IEC 2022
CONTENTS
FOREWORD . 7
INTRODUCTION . 9
1 Scope . 11
2 Normative references . 11
3 Terms and definitions . 11
4 General . 14
4.1 General . 14
4.2 Version number . 14
5 Electrical specification . 15
6 Bus power supply . 15
7 Transmission protocol structure . 15
7.1 General . 15
7.2 16-bit forward frame encoding . 15
7.2.1 General . 15
7.2.2 Address byte . 15
7.2.3 Opcode byte . 15
8 Timing . 16
9 Method of operation . 16
9.1 General . 16
9.2 Control gear . 16
9.2.1 General . 16
9.2.2 Control gear phases . 16
9.3 Dimming curve . 17
9.4 Calculating "targetLevel" . 20
9.5 Fading . 20
9.5.1 General . 20
9.5.2 Fade time . 21
9.5.3 Fade rate . 22
9.5.4 Extended fade time . 23
9.5.5 Using the fade time . 25
9.5.6 Using the fade rate . 25
9.5.7 System response to changes during a fade . 26
9.5.8 System response to changes during standby and startup . 26
9.5.9 Stopping a fade . 26
9.6 Min and max level . 26
9.7 Commands . 27
9.7.1 General . 27
9.7.2 Level instructions without fade . 27
9.7.3 Level instructions initiating a fade . 28
9.7.4 Configuration instructions . 28
9.7.5 Queries. 28
9.7.6 Special commands. 28
9.7.7 Application extended commands . 28
9.8 Command iterations . 28
9.8.1 General . 28

9.8.2 Command iteration of "UP" and "DOWN" commands . 28
9.8.3 DAPC SEQUENCE (deprecated) . 29
9.9 Modes of operation . 30
9.9.1 General . 30
9.9.2 Operating mode 0x00: standard mode . 30
9.9.3 Operating mode 0x01 to 0x7F: reserved . 30
9.9.4 Operating mode 0x80 to 0xFF: manufacturer-specific modes . 30
9.10 Memory banks . 30
9.10.1 General . 30
9.10.2 Memory map . 31
9.10.3 Selecting a memory bank location . 32
9.10.4 Protectable memory locations . 32
9.10.5 Memory bank reading . 32
9.10.6 Memory bank writing . 34
9.10.7 Memory bank 0 . 35
9.10.8 Memory bank 1 (optional) . 37
9.10.9 Manufacturer-specific memory banks . 39
9.10.10 Reserved memory banks . 39
9.11 Reset . 39
9.11.1 Reset operation . 39
9.11.2 Reset memory bank operation . 39
9.12 System failure . 40
9.13 Power on . 40
9.14 Assigning short addresses . 41
9.14.1 General . 41
9.14.2 Random address allocation . 41
9.14.3 Identification of a device . 42
9.14.4 Direct address allocation . 43
9.15 Failure state behaviour . 43
9.16 Status information . 43
9.16.1 General . 43
9.16.2 Bit 0: Control gear failure . 44
9.16.3 Bit 1: lamp failure . 44
9.16.4 Bit 2: lamp on . 46
9.16.5 Bit 3: limit error . 46
9.16.6 Bit 4: fade running . 46
9.16.7 Bit 5: reset state . 46
9.16.8 Bit 6: missing short address . 46
9.16.9 Bit 7: power cycle seen . 46
9.17 Non-volatile memory . 46
9.18 Device types and features . 47
9.19 Using scenes . 47
9.20 Current bus unit configuration . 48
10 Declaration of variables . 49
11 Definition of commands . 52
11.1 General . 52
11.2 Overview sheets . 52
11.3 Level instructions . 57
11.3.1 DAPC (level) . 57

– 4 – IEC 62386-102:2022 © IEC 2022
11.3.2 OFF . 57
11.3.3 UP . 57
11.3.4 DOWN . 57
11.3.5 STEP UP . 58
11.3.6 STEP DOWN . 58
11.3.7 RECALL MAX LEVEL . 58
11.3.8 RECALL MIN LEVEL . 59
11.3.9 STEP DOWN AND OFF . 59
11.3.10 ON AND STEP UP . 59
11.3.11 ENABLE DAPC SEQUENCE . 60
11.3.12 GO TO LAST ACTIVE LEVEL . 60
11.3.13 CONTINUOUS UP . 60
11.3.14 CONTINUOUS DOWN . 60
11.3.15 GO TO SCENE (sceneNumber) . 60
11.4 Configuration instructions . 60
11.4.1 General . 60
11.4.2 RESET . 61
11.4.3 STORE ACTUAL LEVEL IN DTR0. 61
11.4.4 SET OPERATING MODE (DTR0) . 61
11.4.5 RESET MEMORY BANK (DTR0) . 61
11.4.6 IDENTIFY DEVICE . 61
11.4.7 SET MAX LEVEL (DTR0) . 62
11.4.8 SET MIN LEVEL (DTR0). 62
11.4.9 SET SYSTEM FAILURE LEVEL (DTR0) . 62
11.4.10 SET POWER ON LEVEL (DTR0) . 63
11.4.11 SET FADE TIME (DTR0) . 63
11.4.12 SET FADE RATE (DTR0) . 63
11.4.13 SET EXTENDED FADE TIME (DTR0) . 63
11.4.14 SET SCENE (DTR0, sceneX) . 64
11.4.15 REMOVE FROM SCENE (sceneX) . 64
11.4.16 ADD TO GROUP (group) . 64
11.4.17 REMOVE FROM GROUP (group) . 64
11.4.18 SET SHORT ADDRESS (DTR0) . 64
11.4.19 ENABLE WRITE MEMORY . 65
11.5 Queries . 65
11.5.1 General . 65
11.5.2 QUERY STATUS . 65
11.5.3 QUERY CONTROL GEAR PRESENT . 65
11.5.4 QUERY CONTROL GEAR FAILURE . 65
11.5.5 QUERY LAMP FAILURE . 65
11.5.6 QUERY LAMP POWER ON . 65
11.5.7 QUERY LIMIT ERROR. 65
11.5.8 QUERY RESET STATE . 65
11.5.9 QUERY MISSING SHORT ADDRESS . 65
11.5.10 QUERY VERSION NUMBER . 66
11.5.11 QUERY CONTENT DTR0 . 66
11.5.12 QUERY DEVICE TYPE . 66
11.5.13 QUERY NEXT DEVICE TYPE . 66
11.5.14 QUERY PHYSICAL MINIMUM . 66

11.5.15 QUERY POWER FAILURE . 67
11.5.16 QUERY CONTENT DTR1 . 67
11.5.17 QUERY CONTENT DTR2 . 67
11.5.18 QUERY OPERATING MODE . 67
11.5.19 QUERY LIGHT SOURCE TYPE . 67
11.5.20 QUERY ACTUAL LEVEL. 68
11.5.21 QUERY MAX LEVEL . 68
11.5.22 QUERY MIN LEVEL . 68
11.5.23 QUERY POWER ON LEVEL . 68
11.5.24 QUERY SYSTEM FAILURE LEVEL. 68
11.5.25 QUERY FADE TIME/FADE RATE . 68
11.5.26 QUERY EXTENDED FADE TIME . 68
11.5.27 QUERY MANUFACTURER SPECIFIC MODE . 68
11.5.28 QUERY SCENE LEVEL (sceneX) . 68
11.5.29 QUERY GROUPS 0-7 . 69
11.5.30 QUERY GROUPS 8-15 . 69
11.5.31 QUERY RANDOM ADDRESS (H) . 69
11.5.32 QUERY RANDOM ADDRESS (M) . 69
11.5.33 QUERY RANDOM ADDRESS (L) . 69
11.5.34 READ MEMORY LOCATION (DTR1, DTR0) . 69
11.6 Application extended commands . 69
11.6.1 General . 69
11.6.2 QUERY EXTENDED VERSION NUMBER . 70
11.7 Special commands . 70
11.7.1 General . 70
11.7.2 TERMINATE . 70
11.7.3 DTR0 (data) . 70
11.7.4 INITIALISE (device) . 70
11.7.5 RANDOMISE . 71
11.7.6 COMPARE. 71
11.7.7 WITHDRAW . 71
11.7.8 SEARCHADDRH (data) . 71
11.7.9 SEARCHADDRM (data) . 72
11.7.10 SEARCHADDRL (data) . 72
11.7.11 PROGRAM SHORT ADDRESS (data) . 72
11.7.12 VERIFY SHORT ADDRESS (data) . 72
11.7.13 QUERY SHORT ADDRESS . 72
11.7.14 ENABLE DEVICE TYPE (data) . 73
11.7.15 DTR1 (data) . 73
11.7.16 DTR2 (data) . 73
11.7.17 WRITE MEMORY LOCATION (DTR1, DTR0, data) . 73
11.7.18 WRITE MEMORY LOCATION – NO REPLY (DTR1, DTR0, data) . 74
11.7.19 PING . 74
Annex A (informative) Examples of algorithms . 75
A.1 Random address allocation . 75
A.2 One single control gear connected to the control device . 75
A.3 Using application extended commands . 76
Annex B (normative) High resolution dimmer . 77
Bibliography . 79

– 6 – IEC 62386-102:2022 © IEC 2022

Figure 1 – IEC 62386 graphical overview . 9
Figure 2 – Control gear directly operating a light source . 16
Figure 3 – Dimming curve . 18
Figure 4 – Level over time, fading up and down . 21
Figure 5 – Timing and response when executing command iteration . 29
Figure 6 – Correlation between "lampFailure", "lampOn" and "fadeRunning" bits . 45
Figure B.1 – Level behaviour in case of off-grid starting points . 78

Table 1 – 16-bit command frame encoding . 15
Table 2 – Dimming curve tolerance . 18
Table 3 – Dimming curve . 19
Table 4 – Fade times . 22
Table 5 – Fade rates . 23
Table 6 – Extended fade time – Base value . 24
Table 7 – Extended fade time – Multiplier . 24
Table 8 – Memory types . 31
Table 9 – Basic memory map of memory banks . 31
Table 10 – Memory map of memory bank 0 . 35
Table 11 – Memory map of memory bank 1 . 38
Table 12 – Power on timing . 41
Table 13 – Control gear status . 43
Table 14 – Scenes . 48
Table 15 – Current bus unit configuration . 49
Table 16 – Declaration of variables . 50
Table 17 – Standard commands . 52
Table 18 – Special commands . 56
Table 19 – Light source type encoding . 67
Table 20 – Device addressing with "INITIALISE (device)" . 70

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
DIGITAL ADDRESSABLE LIGHTING INTERFACE –

Part 102: General requirements – Control gear

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
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2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
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3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
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between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
IEC 62386-102 has been prepared by IEC technical committee 34: Lighting. It is an
International Standard.
This third edition cancels and replaces the second edition published in 2014 and
Amendment 1:2018. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
• the scope has been updated;
• references have been updated;
• memory bank reading of multi-byte values has been added;
• memory bank 0 and common memory bank requirements have been updated;
• reserved memory banks have been updated;

– 8 – IEC 62386-102:2022 © IEC 2022
• non-volatile memory (NVM) save time has been added, and SAVE PERSISTENT
VARIABLES removed;
• version number has been updated;
• bus unit configuration has been added.
The text of this International Standard is based on the following documents:
Draft Report on voting
34/948/FDIS 34/989/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement,
available at www.iec.ch/members_experts/refdocs. The main document types developed by
IEC are described in greater detail at www.iec.ch/standardsdev/publications.
This Part 102 of IEC 62386 is intended to be used in conjunction with Part 101, which
contains general requirements for the relevant product type (system), and with the appropriate
Part 2xx (particular requirements for control gear) containing clauses to supplement or modify
the corresponding clauses in Part 101 and Part 102 in order to provide the relevant
requirements for each type of product.
A list of all parts in the IEC 62386 series, published under the general title Digital addressable
lighting interface, can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The "colour inside" logo on the cover page of this document indicates that it
contains colours which are considered to be useful for the correct understanding of its
contents. Users should therefore print this document using a colour printer.

INTRODUCTION
IEC 62386 contains several parts, referred to as series. The IEC 62386 series specifies a bus
system for control by digital signals of electronic lighting equipment. The IEC 62386-1xx
series includes the basic specifications. Part 101 contains general requirements for system
components, Part 102 extends this information with general requirements for control gear and
Part 103 extends it further with general requirements for control devices. Part 104 and
Part 105 can be applied to control gear or control devices. Part 104 gives requirements for
wireless and alternative wired system components. Part 105 describes firmware transfer.
Part 150 gives requirements for an auxiliary power supply which can be stand-alone, or built
into control gear or control devices.
The IEC 62386-2xx series extends the general requirements for control gear with lamp
specific extensions (mainly for backward compatibility with Edition 1 of IEC 62386) and with
control gear specific features.
The IEC 62386-3xx series extends the general requirements for control devices with input
device specific extensions describing the instance types as well as some common features
that can be combined with multiple instance types.
This third edition of IEC 62386-102 is intended to be used in conjunction with IEC 62386-101
and with the various parts that make up the IEC 62386-2xx series for control gear, and can be
used together with IEC 62386-103 for control devices. The division into separately published
parts provides for ease of future amendments and revisions. Additional requirements will be
added as and when a need for them is recognised.
The setup of the standards is graphically represented in Figure 1 below.

Figure 1 – IEC 62386 graphical overview
When this part of IEC 62386 refers to any of the clauses of the other parts of the IEC 62386-
1xx series, the extent to which such a clause is applicable is specified. The other parts also
include additional requirements, as necessary.
All numbers used in this document are decimal numbers unless otherwise noted. Hexadecimal
numbers are given in the format 0xVV, where VV is the value. Binary numbers are given in
the format XXXXXXXXb or in the format XXXX XXXX, where X is 0 or 1 and "x" in binary
numbers means "don't care".
– 10 – IEC 62386-102:2022 © IEC 2022
The following typographic expressions are used:
Variables: variableName or variableName[3:0], giving only bits 3 to 0 of variableName;
Range of values: [lowest, highest];
Command: "COMMAND NAME".
DIGITAL ADDRESSABLE LIGHTING INTERFACE –

Part 102: General requirements – Control gear

1 Scope
This part of IEC 62386 is applicable to control gear for control by digital signals of electronic
lighting equipment.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their
content constitutes requirements 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 62386-101:2022, Digital addressable lighting interface – Part 101: General requirements
– System components
IEC 62386-103:2022, Digital addressable lighting interface – Part 103: General requirements
– Control devices
IEC 62386-2xx (all parts), Digital addressable lighting interface – Part 2xx: Particular
requirements for control gear
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 62386-101 and the
following apply.
ISO and IEC maintain terminology databases for use in standardization at the following
addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1
actual level
value representing the current light output
3.2
arc power
power supplied to the light sources (lamps)
3.3
broadcast
type of address used to simultaneously address all control gear in the system
3.4
broadcast unaddressed
type of address used to simultaneously address all control gear in the system that have no
short address
– 12 – IEC 62386-102:2022 © IEC 2022
3.5
DAPC
direct arc power control
method to directly control the light output
3.6
DTR
data transfer register
multipurpose register used to exchange data
3.7
group address
type of address used to address a group of control gear in the system all at once
3.8
GTIN
global trade item number
number used for the unique identification of trade items worldwide
Note 1 to entry: For further information see http://en.wikipedia.org/wiki/GTIN.
Note 2 to entry: The global trade item number is comprised of a GS1 or U.P.C. company prefix followed by an
item reference number and a check digit. It is described in the "GS1 General Specifications" (see [1]).
3.9
identification
temporary state used during commissioning that allows the installer to identify particular
control gear
3.10
level
8-bit value
3.11
MASK
value with all binary digits set to 1
Note 1 to entry: This means that an 8-bit backward frame of MASK is a value of 0xFF, and a multi-byte memory
location of 24 bits containing MASK is a value of 0xFFFFFF.
3.12
NO
answer to a query where no backward frame is sent
Note 1 to entry: If a query is asked where the answer is NO, there will be no response, such that the sender of
the query will conclude "no backward frame" following IEC 62386-101:2022, 8.2.5.
Note 2 to entry: The answer NO could also be triggered by a missed query.
3.13
NVM
non-volatile memory
non-volatile read/write memory, the content of which can be changed and will not be lost due
to a power cycle
3.14
NVM-RO
NVM that cannot be written using any command
3.15
NVM-RW
NVM that can be modified using one or more commands

3.16
opcode
operation code
part of a forward frame that identifies the command to be executed
3.17
operating mode
set of states identified by a number in the range [0,255], characterised by a collection of
variables and memory settings, and used to select a set of functionalities to be exh
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