Beckhoff EtherCAT EK112 Series User manual

Documentation | EN
EK112x, EK15xx
EtherCAT Junctions
2023-08-14 | Version: 3.6

Table of contents
EK112x, EK15xx 3Version: 3.6
Table of contents
1 Foreword....................................................................................................................................................5
1.1 Overview EtherCAT Junctions ..........................................................................................................5
1.2 Notes on the documentation .............................................................................................................6
1.3 Safety instructions.............................................................................................................................7
1.4 Guide through documentation...........................................................................................................8
1.5 Documentation issue status ..............................................................................................................9
1.6 Version identification of EtherCAT devices .....................................................................................10
1.6.1 General notes on marking................................................................................................10
1.6.2 Version identification of EK Couplers...............................................................................11
1.6.3 Beckhoff Identification Code (BIC) ................................................................................... 12
1.6.4 Electronic access to the BIC (eBIC).................................................................................14
2 Product overview ....................................................................................................................................16
2.1 Junction with RJ45 connection........................................................................................................16
2.1.1 EK1122, EK1122-0080 .................................................................................................... 16
2.1.2 EK1121-0010 ...................................................................................................................22
2.2 Junctions with M8 connection .........................................................................................................26
2.2.1 EK1122-0008 ...................................................................................................................26
2.3 Junctions with fiber optic connection...............................................................................................28
2.3.1 EK1521 ............................................................................................................................28
2.3.2 EK1521-0010 ...................................................................................................................30
2.4 Junctions with POF connection.......................................................................................................32
2.4.1 EK1561 ............................................................................................................................32
3 Commissioning/application notes.........................................................................................................34
3.1 Application notes RJ45 junction ......................................................................................................34
3.1.1 EK1121-0010 - Settings and port assignment ................................................................. 34
3.1.2 EK1122 - Settings and port assignment........................................................................... 35
3.2 Application notes M8 junction .........................................................................................................36
3.2.1 EK1122-0008 - Settings and port assignment ................................................................. 36
3.3 Application notes fiber optic junction...............................................................................................37
3.3.1 Principles of fiber-optic technology .................................................................................. 38
3.3.2 EK1521-00x0 - Settings and port assignment.................................................................. 43
3.3.3 Notes on suitable optical fiber cables............................................................................... 44
3.3.4 Application with EK1521 and EK1521-0010 .................................................................... 45
3.4 Application notes POF junction .......................................................................................................47
3.4.1 EK1561 - Settings and port assignment........................................................................... 47
3.4.2 Notes regarding suitable POF cables .............................................................................. 48
3.4.3 Application with EK1561 .................................................................................................. 49
3.5 Notes regarding assembly of POF cables with the connector set ZS1090-0008............................51
4 Error handling and diagnostics .............................................................................................................55
4.1 Diagnostic LEDs EK1121-0010, EK1122, EK1122-0008................................................................55
4.2 Diagnostic LEDs EK1521, EK1521-0010........................................................................................56
4.3 Diagnostic LEDs EK1561................................................................................................................57
5 Mounting and wiring ...............................................................................................................................58

Table of contents
EK112x, EK15xx4 Version: 3.6
5.1 Instructions for ESD protection .......................................................................................................58
5.2 Explosion protection........................................................................................................................59
5.2.1 ATEX - Special conditions (extended temperature range)...............................................59
5.2.2 IECEx - Special conditions...............................................................................................60
5.2.3 Continuative documentation for ATEX and IECEx...........................................................61
5.2.4 cFMus - Special conditions .............................................................................................. 62
5.2.5 Continuative documentation for cFMus............................................................................ 63
5.3 UL notice .........................................................................................................................................63
5.4 Recommended mounting rails ........................................................................................................64
5.5 Installation on mounting rails...........................................................................................................65
5.6 Mounting and demounting - terminals with front unlocking .............................................................67
5.7 Installation positions........................................................................................................................69
5.8 Connection system..........................................................................................................................71
5.9 Wiring ..............................................................................................................................................72
5.10 EtherCAT cabling – wire-bound ......................................................................................................74
5.11 M8 Connector Cabling ....................................................................................................................75
5.12 Nut torque for connectors................................................................................................................77
5.13 Note - Power supply........................................................................................................................78
5.14 Power supply, potential groups .......................................................................................................78
5.15 Positioning of passive Terminals.....................................................................................................81
5.16 Disposal ..........................................................................................................................................82
6 Basics.......................................................................................................................................................83
6.1 EtherCAT basics .............................................................................................................................83
6.2 Basic function principles of EtherCAT junctions..............................................................................83
6.3 EtherCAT State Machine ................................................................................................................90
6.4 CoE - Interface: notes .....................................................................................................................91
6.5 EKxxxx - Optional Distributed Clocks support.................................................................................91
7 Appendix..................................................................................................................................................94
7.1 Safety instructions and behavioral rules for Class 1 laser ..............................................................94
7.2 Firmware compatibility ....................................................................................................................94
7.3 Firmware Update EL/ES/EM/ELM/EPxxxx......................................................................................94
7.3.1 Device description ESI file/XML ....................................................................................... 96
7.3.2 Firmware explanation.......................................................................................................99
7.3.3 Updating controller firmware *.efw ................................................................................... 99
7.3.4 FPGA firmware *.rbf ....................................................................................................... 101
7.3.5 Simultaneous updating of several EtherCAT devices .................................................... 105
7.4 Support and Service......................................................................................................................106

Foreword
EK112x, EK15xx 5Version: 3.6
1 Foreword
1.1 Overview EtherCAT Junctions
Connection RJ45
EK1121-0010 [}22] 1 port EtherCAT junction, extended distance
EK1122 [}16] 2 port EtherCAT junction
EK1122-0080 [}16] 2 port EtherCAT junction, Fast-Hot-Connect
Connection M8
EK1122-0008 [}26] 2 port EtherCAT junction
Connection Fiber optic
EK1521 [}28] 1 port EtherCAT multimode fiber optic junction
EK1521-0010 [}30] 1 port EtherCAT singlemode fiber optic junction
Connection Polymeric Optical Fiber
EK1561 [}32] 1 port EtherCAT polymeric optical fiber junction

Foreword
EK112x, EK15xx6 Version: 3.6
1.2 Notes on the documentation
Intended audience
This description is only intended for the use of trained specialists in control and automation engineering who
are familiar with the applicable national standards.
It is essential that the documentation and the following notes and explanations are followed when installing
and commissioning these components.
It is the duty of the technical personnel to use the documentation published at the respective time of each
installation and commissioning.
The responsible staff must ensure that the application or use of the products described satisfy all the
requirements for safety, including all the relevant laws, regulations, guidelines and standards.
Disclaimer
The documentation has been prepared with care. The products described are, however, constantly under
development.
We reserve the right to revise and change the documentation at any time and without prior announcement.
No claims for the modification of products that have already been supplied may be made on the basis of the
data, diagrams and descriptions in this documentation.
Trademarks
Beckhoff®, TwinCAT®, TwinCAT/BSD®, TC/BSD®, EtherCAT®, EtherCATG®, EtherCATG10®, EtherCATP®,
SafetyoverEtherCAT®, TwinSAFE®, XFC®, XTS® and XPlanar® are registered trademarks of and licensed by
Beckhoff Automation GmbH. Other designations used in this publication may be trademarks whose use by
third parties for their own purposes could violate the rights of the owners.
Patent Pending
The EtherCAT Technology is covered, including but not limited to the following patent applications and
patents: EP1590927, EP1789857, EP1456722, EP2137893, DE102015105702 with corresponding
applications or registrations in various other countries.
EtherCAT® is registered trademark and patented technology, licensed by Beckhoff Automation GmbH,
Germany.
Copyright
© Beckhoff Automation GmbH & Co. KG, Germany.
The reproduction, distribution and utilization of this document as well as the communication of its contents to
others without express authorization are prohibited.
Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a
patent, utility model or design.

Foreword
EK112x, EK15xx 7Version: 3.6
1.3 Safety instructions
Safety regulations
Please note the following safety instructions and explanations!
Product-specific safety instructions can be found on following pages or in the areas mounting, wiring,
commissioning etc.
Exclusion of liability
All the components are supplied in particular hardware and software configurations appropriate for the
application. Modifications to hardware or software configurations other than those described in the
documentation are not permitted, and nullify the liability of Beckhoff Automation GmbH & Co. KG.
Personnel qualification
This description is only intended for trained specialists in control, automation and drive engineering who are
familiar with the applicable national standards.
Signal words
The signal words used in the documentation are classified below. In order to prevent injury and damage to
persons and property, read and follow the safety and warning notices.
Personal injury warnings
DANGER
Hazard with high risk of death or serious injury.
WARNING
Hazard with medium risk of death or serious injury.
CAUTION
There is a low-risk hazard that could result in medium or minor injury.
Warning of damage to property or environment
NOTICE
The environment, equipment, or data may be damaged.
Information on handling the product
This information includes, for example:
recommendations for action, assistance or further information on the product.

Foreword
EK112x, EK15xx8 Version: 3.6
1.4 Guide through documentation
NOTICE
Further components of documentation
This documentation describes device-specific content. It is part of the modular
documentation concept for Beckhoff I/O components. For the use and safe operation of the
device / devices described in this documentation, additional cross-product descriptions are
required, which can be found in the following table.
Title Description
EtherCAT System Documentation (PDF)• System overview
• EtherCAT basics
• Cable redundancy
• Hot Connect
• EtherCAT devices configuration
Explosion Protection for Terminal
Systems(PDF)
Notes on the use of the Beckhoff terminal systems in
hazardous areas according to ATEX and IECEx
Control Drawing I/O, CX, CPX (PDF)Connection diagrams and Ex markings (conform to cFMus)
Infrastructure for EtherCAT/Ethernet (PDF)Technical recommendations and notes for design,
implementation and testing
Software Declarations I/O (PDF)Open source software declarations for
Beckhoff I/O components
The documentations can be viewed at and downloaded from the Beckhoff website (www.beckhoff.com) via:
• the “Documentation and Download” area of the respective product page,
• the Download finder,
• the Beckhoff Information System.

Foreword
EK112x, EK15xx 9Version: 3.6
1.5 Documentation issue status
Version Modifications
3.6 • Update chapter “Technical data”
• Update chapter “Mounting and wiring”
• Update structure
3.5 • New title page
• Addenda EK1121-0010
• Update chapter “Technical data”
• Update chapter “Application notes”
• Update chapter “UL notes”
• Update structure
3.4 • Update chapter “Technical data”
• Update structure
3.3 • Update chapter “Notes on the documentation”
• Update chapter “Technical data”
• Addenda chapter “Instructions for ESD protection”
• Chapter “ATEX - Special conditions” replaced with chapter “ATEX - Special conditions (ex-
tended temperature range)”
3.2 • Corrections within chapter “Technical data”
3.1 • Corrections within chapter “Basic function principles of EtherCAT junctions”
3.0 • Addenda of EK1122-0008 (EtherCAT coupler, with M8 sockets);
• Migration
2.4 • Update chapter “Mounting and wiring”
• Update chapter “Technical data”
• Update structure
2.3 • Update Technical data
2.2 • Update Technical data
2.1 • Addenda chapter “Optional DC support”
2.0 • Addenda EK1122-0080
1.9 • Application notes POF junction added
1.8 • EK1561 added
1.7 • Update chapter "Diagnostic LEDs"
1.6 • Technical notes added, structure adjusted
1.5 • EK1521-0010 added
1.4 • Note PC plug added
1.3 • Port assignment added
1.2 • Addenda technical notes
1.1 • Technical description added
1.0 • First public issue
0.1 • Preliminary version

Foreword
EK112x, EK15xx10 Version: 3.6
1.6 Version identification of EtherCAT devices
1.6.1 General notes on marking
Designation
A Beckhoff EtherCAT device has a 14-digit designation, made up of
• family key
• type
• version
• revision
Example Family Type Version Revision
EL3314-0000-0016 EL terminal
12 mm, non-pluggable connection level
3314
4-channel thermocouple terminal
0000
basic type
0016
ES3602-0010-0017 ES terminal
12 mm, pluggable connection level
3602
2-channel voltage measurement
0010
high-precision version
0017
CU2008-0000-0000 CU device 2008
8-port fast ethernet switch
0000
basic type
0000
Notes
• The elements mentioned above result in the technical designation. EL3314-0000-0016 is used in the
example below.
• EL3314-0000 is the order identifier, in the case of “-0000” usually abbreviated to EL3314. “-0016” is the
EtherCAT revision.
• The order identifier is made up of
- family key (EL, EP, CU, ES, KL, CX, etc.)
- type (3314)
- version (-0000)
• The revision -0016 shows the technical progress, such as the extension of features with regard to the
EtherCAT communication, and is managed by Beckhoff.
In principle, a device with a higher revision can replace a device with a lower revision, unless specified
otherwise, e.g. in the documentation.
Associated and synonymous with each revision there is usually a description (ESI, EtherCAT Slave
Information) in the form of an XML file, which is available for download from the Beckhoff web site.
From 2014/01 the revision is shown on the outside of the IP20 terminals, see Fig. “EL5021 EL terminal,
standard IP20 IO device with batch number and revision ID (since 2014/01)”.
• The type, version and revision are read as decimal numbers, even if they are technically saved in
hexadecimal.

Foreword
EK112x, EK15xx 11Version: 3.6
1.6.2 Version identification of EK Couplers
The serial number/ data code for Beckhoff IO devices is usually the 8-digit number printed on the device or
on a sticker. The serial number indicates the configuration in delivery state and therefore refers to a whole
production batch, without distinguishing the individual modules of a batch.
Structure of the serial number: KKYYFFHH
KK - week of production (CW, calendar week)
YY - year of production
FF - firmware version
HH - hardware version
Example with serial number 12 06 3A 02:
12 - production week 12
06 - production year 2006
3A - firmware version 3A
02 - hardware version 02
Fig.1: EK1101 EtherCAT coupler with revision 0815 and serial number 41130206

Foreword
EK112x, EK15xx12 Version: 3.6
1.6.3 Beckhoff Identification Code (BIC)
The Beckhoff Identification Code (BIC) is increasingly being applied to Beckhoff products to uniquely identify
the product. The BIC is represented as a Data Matrix Code (DMC, code scheme ECC200), the content is
based on the ANSI standard MH10.8.2-2016.
Fig.2: BIC as data matrix code (DMC, code scheme ECC200)
The BIC will be introduced step by step across all product groups.
Depending on the product, it can be found in the following places:
• on the packaging unit
• directly on the product (if space suffices)
• on the packaging unit and the product
The BIC is machine-readable and contains information that can also be used by the customer for handling
and product management.
Each piece of information can be uniquely identified using the so-called data identifier
(ANSIMH10.8.2-2016). The data identifier is followed by a character string. Both together have a maximum
length according to the table below. If the information is shorter, spaces are added to it.
Following information is possible, positions 1 to 4 are always present, the other according to need of
production:

Foreword
EK112x, EK15xx 13Version: 3.6
Posi-
tion
Type of
information
Explanation Data
identifier
Number of digits
incl. data identifier
Example
1 Beckhoff order
number
Beckhoff order number 1P 8 1P072222
2 Beckhoff Traceability
Number (BTN)
Unique serial number,
see note below
SBTN 12 SBTNk4p562d7
3 Article description Beckhoff article
description, e.g.
EL1008
1K 32 1KEL1809
4 Quantity Quantity in packaging
unit, e.g. 1, 10, etc.
Q 6 Q1
5 Batch number Optional: Year and week
of production
2P 14 2P401503180016
6 ID/serial number Optional: Present-day
serial number system,
e.g. with safety products
51S 12 51S678294
7 Variant number Optional: Product variant
number on the basis of
standard products
30P 32 30PF971, 2*K183
...
Further types of information and data identifiers are used by Beckhoff and serve internal processes.
Structure of the BIC
Example of composite information from positions 1 to 4 and with the above given example value on position
6. The data identifiers are highlighted in bold font:
1P072222SBTNk4p562d71KEL1809 Q1 51S678294
Accordingly as DMC:
Fig.3: Example DMC 1P072222SBTNk4p562d71KEL1809 Q1 51S678294
BTN
An important component of the BIC is the Beckhoff Traceability Number (BTN, position 2). The BTN is a
unique serial number consisting of eight characters that will replace all other serial number systems at
Beckhoff in the long term (e.g. batch designations on IO components, previous serial number range for
safety products, etc.). The BTN will also be introduced step by step, so it may happen that the BTN is not yet
coded in the BIC.
NOTICE
This information has been carefully prepared. However, the procedure described is constantly being further
developed. We reserve the right to revise and change procedures and documentation at any time and
without prior notice. No claims for changes can be made from the information, illustrations and descriptions
in this information.

Foreword
EK112x, EK15xx14 Version: 3.6
1.6.4 Electronic access to the BIC (eBIC)
Electronic BIC (eBIC)
The Beckhoff Identification Code (BIC) is applied to the outside of Beckhoff products in a visible place. If
possible, it should also be electronically readable.
Decisive for the electronic readout is the interface via which the product can be electronically addressed.
K-bus devices (IP20, IP67)
Currently, no electronic storage and readout is planned for these devices.
EtherCAT devices (IP20, IP67)
All Beckhoff EtherCAT devices have a so-called ESI-EEPROM, which contains the EtherCAT identity with
the revision number. Stored in it is the EtherCAT slave information, also colloquially known as ESI/XML
configuration file for the EtherCAT master. See the corresponding chapter in the EtherCAT system manual
(Link) for the relationships.
The eBIC is also stored in the ESI‑EEPROM. The eBIC was introduced into the Beckhoff I/O production
(terminals, boxmodules) from 2020; widespread implementation is expected in 2021.
The user can electronically access the eBIC (if existent) as follows:
• With all EtherCAT devices, the EtherCAT master (TwinCAT) can read the eBIC from the ESI‑EEPROM
◦ From TwinCAT 3.1 build 4024.11, the eBIC can be displayed in the online view.
◦ To do this,
check the checkbox "Show Beckhoff Identification Code (BIC)" under
EtherCAT→AdvancedSettings→Diagnostics:
◦ The BTN and its contents are then displayed:
◦ Note: as can be seen in the illustration, the production data HW version, FW version and
production date, which have been programmed since 2012, can also be displayed with "Show
Production Info".
◦ Access from the PLC: From TwinCAT 3.1. build 4024.24 the functions FB_EcReadBIC and
FB_EcReadBTN are available in the Tc2_EtherCAT Library from v3.3.19.0 for reading into the
PLC..
• In the case of EtherCAT devices with CoE directory, the object 0x10E2:01 can additionally by used to
display the device's own eBIC; the PLC can also simply access the information here:

Foreword
EK112x, EK15xx 15Version: 3.6
◦ The device must be in PREOP/SAFEOP/OP for access:
◦ The object 0x10E2 will be introduced into stock products in the course of a necessary firmware
revision.
◦ From TwinCAT 3.1. build 4024.24 the functions FB_EcCoEReadBIC and FB_EcCoEReadBTN are
available in the Tc2_EtherCAT Library from v3.3.19.0 for reading into the PLC.
• For processing the BIC/BTN data in the PLC, the following auxiliary functions are available in
Tc2_Utilities from TwinCAT 3.1 build 4024.24 onwards
◦ F_SplitBIC: The function splits the Beckhoff Identification Code (BIC) sBICValue into its
components based on known identifiers and returns the recognized partial strings in a structure
ST_SplitBIC as return value.
◦ BIC_TO_BTN: The function extracts the BTN from the BIC and returns it as a value.
• Note: in the case of electronic further processing, the BTN is to be handled as a string(8); the identifier
"SBTN" is not part of the BTN.
• Technical background
The new BIC information is additionally written as a category in the ESI‑EEPROM during the device
production. The structure of the ESI content is largely dictated by the ETG specifications, therefore the
additional vendor-specific content is stored with the help of a category according to ETG.2010. ID03
indicates to all EtherCAT masters that they must not overwrite these data in case of an update or
restore the data after an ESI update.
The structure follows the content of the BIC, see there. This results in a memory requirement of
approx. 50..200bytes in the EEPROM.
• Special cases
◦ If multiple, hierarchically arranged ESCs are installed in a device, only the top-level ESC carries
the eBIC Information.
◦ If multiple, non-hierarchically arranged ESCs are installed in a device, all ESCs carry the eBIC
Information.
◦ If the device consists of several sub-devices with their own identity, but only the top-level device is
accessible via EtherCAT, the eBIC of the top-level device is located in the CoE object directory
0x10E2:01 and the eBICs of the sub-devices follow in 0x10E2:nn.
PROFIBUS, PROFINET, DeviceNet devices etc.
Currently, no electronic storage and readout is planned for these devices.

Product overview
EK112x, EK15xx16 Version: 3.6
2 Product overview
2.1 Junction with RJ45 connection
2.1.1 EK1122, EK1122-0080
2.1.1.1 Introduction
Fig.4: EK1122-xxxx
EK1122-0000
The 2-port EtherCAT junction enables configuration of EtherCAT star topologies. A modular EtherCAT star
hub can be realized by using several EK1122 units in a station. Individual devices or complete EtherCAT
strands can be connected at the junction ports. The EtherCAT junctions are connected via RJ-45 sockets
with direct display of link and activity status. The Run LED indicates the status of the EK1122. Through
TwinCAT and other suitable EtherCAT masters the EK1122 also supports coupling and uncoupling of
EtherCAT strands during operation (hot connect).
EK1122-0080
Hot Connect is an EtherCAT feature for changing topologies through direct coupling or uncoupling during
operation. Coupled EtherCAT components are already quickly linked to the data communication after
connection as standard. Fast hot-connect technology further reduces the connection time significantly,
enabling even faster tool changes. Fast hot-connect ports may only be connected to each other, which is
why they are specially identified.
The EK1122-0080 EtherCAT junction with Fast Hot Connect is complemented by the EK1101-0080
EtherCAT coupler with Fast Hot Connect.
Fast Hot Connect ports at the EK1122-0080
In contrast to the EK1122, the RJ45 connections of the FHC ports of the EK1122-0080 are marked
with a dotted border (see Fig. 2) Explanatory notes can be found in chapter EtherCAT Fast-Hot-
Connect [}19].

Product overview
EK112x, EK15xx 17Version: 3.6
Fig.5: Fast-Hot-Connect ports at the EK1122-0080
Connection
Terminal point Description
Designation
X1/X2 RJ45 connection for EtherCAT networks (100BASE-
TX Ethernet signal representation)
Quick links
•EtherCAT basics
•Notes on Fast Hot Connect [}19]
•Application notes [}34]
•Diagnostic LEDs [}55]

Product overview
EK112x, EK15xx18 Version: 3.6
2.1.1.2 Technical data
Technical data EK1122 EK1122-0080
Task within the EtherCAT system Coupling of EtherCAT junctions Coupling of EtherCAT junctions,
Fast-Hot-Connect technology
[}19]
Transmission medium Ethernet/EtherCAT cable (min. CAT5), shielded
Cable length between two Bus
Couplers
max. 100m (100BASE-TX)
Protocol EtherCAT
Data transfer rates 100Mbit/s
Bus connection 2 x RJ45
Delay typ. 1µs
Configuration no address and configuration settings required
General data EK1122 EK1122-0080
Power supply from E-bus
Current consumption typ. 220mA
Dimensions (W x H x D) approx. 26mm x 100mm x 52mm (width aligned: 23mm)
Weight approx. 70g
Permissible ambient temperature
range during operation
-25°C ... +60°C
(extended temperature range)
Permissible ambient temperature
range during storage
-40°C ... + 85°C
Permissible relative humidity 95%, no condensation
Mounting [}58] on 35mm mounting rail conforms to EN 60715
Vibration/shock resistance conforms to EN60068-2-6 / EN60068-2-27
EMC immunity/emission conforms to EN61000-6-2 / EN61000-6-4
Protection class IP20
Installation position variable
Approvals/markings CE, cULus [}63], ATEX [}59],
IECEx [}60], cFMus [}62]
CE, cULus [}63], ATEX [}59]
Ex markings
Standard EK1122 EK1122-0080
ATEX II 3 G Ex nA IIC T4 Gc
II 3 D Ex tc IIIC T135 °C Dc
II 3 G Ex nA IIC T4 Gc
IECEx Ex nA IIC T4 Gc
Ex tc IIIC T135 °C Dc
-
cFMus Class I, Division 2, Groups A, B, C, D
Class I, Zone 2, AEx/Ex ec IIC T4 Gc
-
*) Real applicable approvals/markings see type plate on the side (product marking).

Product overview
EK112x, EK15xx 19Version: 3.6
2.1.1.3 Notes re. EtherCAT Fast Hot Connect technology
EtherCAT components that support Fast Hot Connect enable a faster fieldbus boot up following the
establishment of a connection. The boot up depends in detail on the number of devices, the topology and
activated Distributed Clocks. Whereas the normal establishment of a connection and communication takes
several seconds, less than 1 second is possible with FHC components.
Properties and system behavior
• Fast Hot Connect is supported from TwinCAT 2.11R3 Build 2221.
• Fast Hot Connect ports are specially marked.
Fig.6: Identification of FHC port at EK1122-0080 and EK1101-0080
• Standard EtherCAT devices may not be connected to Fast Hot Connect ports. This is to be ensured by
measures on the application side, which is easy to implement by means of the topology change that is
usually carried out mechanically in such applications.
Fig.7: Recommended combination of Ethernet ports
• If corresponding ports are nevertheless connected, a power reset of the devices involved (branch
terminal and coupler/box) is required.

Product overview
EK112x, EK15xx20 Version: 3.6
• With Fast Hot Connect devices the establishment of an Ethernet connection is accelerated compared
to the normal Fast Ethernet connection.
If in addition the use of Distributed Clocks functions is omitted in the entire topology, then the
resynchronization time of the components is also dispensed with. Group boot up of<1second is then
possible, from plugging in the Ethernet connection to the OP state.
• An incorrect port allocation is detected in the TwinCAT ADS Logger
Fig.8: Detection of incorrect port allocation in the TwinCAT logger
Configuration
The configuration of Fast Hot Connect groups in the TwinCAT System Manager takes place in exactly the
same way as Hot Connect groups, specifying the associated group ID.
Fig.9: Configuration of a Fast Hot Connect group
Corresponding Fast Hot Connect ports are marked red in the TwinCAT System Manager.