EUCHNER EKS User manual

Electronic-Key-System
Manual
Electronic-Key adapter EKS and EKS FSA
with Ethernet TCP/IP interface
Order no. 2100420
Ethernet

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Table of contents
1General notes...............................................................................................................................................4
1.1 Use of the manual..................................................................................................................................4
1.1.1 Explanation of symbols ..............................................................................................................4
1.1.2 Abbreviations .............................................................................................................................5
1.2 CE conformity.........................................................................................................................................5
1.3 Approvals...............................................................................................................................................5
1.3.1 UL approval................................................................................................................................5
1.3.2 Radio frequency approvals for USA and Canada......................................................................6
1.4 Correct use.............................................................................................................................................6
1.5 Obligations on the operating organization .............................................................................................7
2Safety precautions.......................................................................................................................................8
3Function........................................................................................................................................................9
3.1 Functional description............................................................................................................................9
3.1.1 Common functions of EKS Standard and version EKS FSA.....................................................9
3.1.2 Additional functions of the version EKS FSA...........................................................................10
4Technical data............................................................................................................................................11
4.1 Dimension drawing of Electronic-Key adapter.....................................................................................11
4.1.1 Version EKS-A-IEX-G01-ST02/03 with Ethernet interface......................................................11
4.1.2 Version EKS-A-IEXA-G01-ST02/03/04 (EKS FSA) with Ethernet interface............................11
4.2 Technical data of Electronic-Key adapter............................................................................................12
4.3 Connector assignment.........................................................................................................................13
4.3.1 Connection socket for Ethernet interface.................................................................................13
4.3.2 Connection terminal assignment..............................................................................................13
4.4 DIP switch settings...............................................................................................................................14
4.4.1 DIP switch S1...........................................................................................................................14
4.4.2 DIP switch S2...........................................................................................................................14
4.4.3 DIP switch S3...........................................................................................................................15
4.5 LED indicator........................................................................................................................................15
5Mounting.....................................................................................................................................................16
6Electrical connection.................................................................................................................................17
6.1 Ethernet connection.............................................................................................................................17
6.1.1 Ethernet configuration..............................................................................................................18
6.2 Connection of power supply.................................................................................................................20

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6.3 Connection of function earth................................................................................................................20
6.4 Connection of the semiconductor switching contacts (for EKS FSA only)..........................................20
7Setup...........................................................................................................................................................21
7.1 Network settings ..................................................................................................................................21
7.1.1 Network settings for a configuration PC with Windows®..........................................................21
7.2 Configuring the Electronic-Key adapter via the web interface.............................................................24
8Data transfer via the Ethernet TCP/IP interface......................................................................................26
8.1 Communication....................................................................................................................................26
8.2 Basic message structure......................................................................................................................26
8.2.1 IP –Internet Protocol ...............................................................................................................26
8.2.2 TCP –Transport Control Protocol............................................................................................26
8.3 Commands for writing and reading an Electronic-Key read/write .......................................................27
8.3.1 Write process...........................................................................................................................28
8.3.2 Read process...........................................................................................................................29
8.3.3 Reading the serial number.......................................................................................................30
8.3.4 Reading the Electronic-Key status...........................................................................................30
8.4 Command overview.............................................................................................................................31
8.5 Status numbers....................................................................................................................................31
9Exclusion of liability..................................................................................................................................32
10 Service and repair .....................................................................................................................................32
11 Guarantee...................................................................................................................................................32

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1 General notes
1.1 Use of the manual
This manual describes the technical features and the function of the EKS Electronic-Key adapters with Ethernet
TCP/IP interface EKS-A-IEX-G01-ST02/03 (order no. 100401) as well as the version FSA (For Safety
Applications) EKS-A-IEXA-G01-ST02/03/04 (order no. 099265). The complete evaluation and interface
electronics for data transmission are integrated into these Electronic-Key adapters (also referred to as “devices”
for short in the rest of the text).
1.1.1 Explanation of symbols
The following symbols are used in this manual to identify important instructions and useful information:
Danger!
Identifies an immediate hazard. If not avoided, the consequence will be fatality or very serious injuries.
Warning!
Identifies a possible hazard. If not avoided, the consequence may be fatality or very serious injuries.
Caution!
Identifies a possible hazard. If not avoided, minor injuries or damage may result.
Attention!
Risk of damage to material or machine or degradation of function.
Information!
Important information is provided to the user here.

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1.1.2 Abbreviations
The following abbreviations are used in this manual:
DHCP Dynamic Host Configuration Protocol
DIP Dual Inline Package
DNS Domain Name Service
E²PROM Electrically Erasable Programmable Read-Only Memory
EKS Electronic-Key-System
EKS FSA Electronic-Key-System For Safety Applications
LED Light Emitting Diode
LSB Least Significant Bit
MSB Most Significant Bit
PA PolyAmide
RD Receive Data
ROM Read-Only Memory
TCP/IP Transmission Control Protocol / Internet Protocol
TD Transmit Data
1.2 CE conformity
The EKS devices with Ethernet TCP/IP interface correspond to the Radio Equipment Directive (RED)
2014/53/EU and the RoHS Directive 2011/65/EU. The devices comply with the following European standards:
EN 55011 Industrial, scientific and medical equipment –Radio-frequency disturbance
characteristics –Limits and methods of measurement
EN 61000-6-2 Electromagnetic compatibility (EMC) –Part 6-2: Generic standards –Immunity standard
for industrial environments
EN 50364 Product standard for human exposure to electromagnetic fields from devices operating
in the frequency range 0 Hz to 300 GHz, used in Electronic Article Surveillance (EAS),
Radio Frequency Identification (RFID) and similar applications
EN 300 330 V2.1.1 Short Range Devices (SRD); Radio equipment in the frequency range 9 kHz to 25 MHz
and inductive loop systems in the frequency range 9 kHz to 30 MHz; Harmonised
Standard covering the essential requirements of article 3.2 of Directive 2014/53/EU
EN 50581 Technical documentation for the assessment of electrical and electronic products with
respect to the restriction of hazardous substances
1.3 Approvals
1.3.1 UL approval
The EKS Electronic-Key adapters with Ethernet interface are certified in accordance with (UL file number
E240367).
For use and operation as per the requirements, a power supply with the feature “for use in class 2
circuits” must be used.

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1.3.2 Radio frequency approvals for USA and Canada
Product description: Electronic-Key-System
FCC ID: 2AJ58-04
IC: 22052-04
FCC/IC-Requirements
This device complies with part 15 of the FCC Rules and with Industry Canada’s licence-exempt RSSs.
Operation is subject to the following two conditions:
1) This device may not cause harmful interference, and
2) this device must accept any interference received, including interference that may cause undesired operation.
Changes or modifications not expressly approved by the party responsible for compliance could void the user‘s
authority to operate the equipment.
NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against
harmful interference when the equipment is operated in a commercial environment. This equipment generates,
uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction
manual, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful interference in which case the user
will be required to correct the interference at his own expense.
Le présent appareil est conforme aux CNR d’Industrie Canada applicables aux appareils radio exempts de
licence. L’exploitation est autorisée aux deux conditions suivantes :
(1) l’appareil ne doit pas produire de brouillage, et
(2) l’utilisateur de l’appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est
susceptible d’en compromettre le fonctionnement.
1.4 Correct use
As part of a higher-level overall system, the EKS Electronic-Key adapter is used for access control and
monitoring on control systems or parts of control systems for machine installations. EKS can be used, for
example, as part of an overall system for checking access rights on the selection of the operating mode.
However, it is not permitted to derive the operating mode directly from the access rights on the Electronic-
Key. If the selection of the operating mode is relevant for safety, this must not be performed by means of the
EKS; instead an additional device must be used to select the operating mode.
Information!
The Machinery Directive 2006/42/EC provides information on selection of the operating mode. It is
imperative that this information be followed.
When designing machines and using the Electronic-Key adapter, the national and international regulations and
standards specific to the application must be observed, e.g.:
EN 60204, Safety of machinery –Electrical equipment of machines
EN 12100-1, Safety of machinery –Basic concepts, general principles for design –Part 1: Basic
terminology, methodology
EN 62061, Safety of machinery –Functional safety of safety-related electrical, electronic and programmable
electronic control systems
EN ISO 13849-1, Safety of machinery –Safety-related parts of control systems –Part 1: General principles
for design
Modifications to the electronics of the Electronic-Key adapter and any other changes, especially mechanical
modifications and reworking, are not permissible and will result in the loss of the warranty and exclusion of
liability.
The Electronic-Key adapter must be employed and used only in accordance with
this manual and
other documentation referred to in this manual.

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The EKS Electronic-Key adapter is not a safety component in the context of the Machinery Directive.
Without additional precautions, the EKS Electronic-Key adapter must not be used to provide a safety function,
particularly if failure or malfunction of the device could endanger the safety or health of people in the operating
area of a machine.
1.5 Obligations on the operating organization
The manufacturer and the organization operating the higher-level overall system, e.g. a machine installation, are
responsible for the observance of national and international safety and accident prevention regulations
applicable in the specific case.

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2 Safety precautions
Warning!
The EKS Electronic-Key adapter is not a safety component in the context of the Machinery Directive.
Without additional precautions, the EKS Electronic-Key adapter must not be used to provide a safety
function, particularly if failure or malfunction of the device could endanger the safety or health of
persons in the operating area of a machine. On this topic, pay particular attention to the sections
Correct use (see chapter 1.4) and Electrical connection (see chapter 6).
Warning!
Mounting and electrical connection are allowed to be performed only by authorized personnel who are
familiar with the applicable regulations on accident prevention and have read and understood this
manual.
Furthermore, mounting and electrical connection of the version EKS FSA must be performed only by
personnel familiar with handling safety components.
Caution!
Modifications to the electronics of the Electronic-Key adapter and any other changes, especially
mechanical modifications and reworking, are not permissible and will result in the loss of the warranty.

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3 Function
3.1 Functional description
3.1.1 Common functions of EKS Standard and version EKS FSA
The EKS is used for access control and monitoring on control systems or parts of control systems for machine
installations.
Instead of passwords, coded Electronic-Keys are assigned. In this way unauthorized access to control and
visualization systems is prevented to the greatest possible extent.
The EKS uses a non-contact, inductive read/write identification system.
It comprises:
Electronic-Key
Electronic-Key adapter
The user is responsible for organizing the programming of the application, integration into an overall system and
the assignment and use of the freely programmable memory in the Electronic-Key.
Information!
For easier organization and management of your Electronic-Keys and the data they contain, EUCHNER
also offers the Electronic-Key-Manager EKM software. To enter data in the EKM software, an
Electronic-Key adapter with serial interface or USB interface must be in operation on the PC.
EKS Ethernet TCP/IP devices are read/write systems with electronics for the inductive bidirectional interface to
the transponder and interface electronics.
Due to the non-contact transfer of data, the Electronic-Key adapter is designed with a high degree of protection
suitable for industry from the access side. The Electronic-Key adapter is fastened from the rear side of the panel
in order to exclude unauthorized tampering from the operator side.
The system is connected via the integrated Ethernet TCP/IP interface, which is designed as an RJ45 socket. A
separate switch may be required for the Ethernet TCP/IP connection. The device does not have an integrated
switch.
Setup and system integration can be implemented straightforwardly and quickly on the Electronic-Key adapter
with Ethernet TCP/IP interface.
The current state of the Electronic-Key adapter is displayed using a 3-color LED.
For operation, the Electronic-Key is inserted into the Electronic-Key adapter and is held in place by a spring clip.
The power supply for the transponder and the data are transferred between the Electronic-Key adapter and the
Electronic-Key without using any contacts.
Figure 1: Cut-away illustration of Electronic-Key adapter
The Electronic-Keys are tag shaped. The complete transponder with memory chip and antenna is integrated
into the Electronic-Key. The transponder does not have a battery.

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The data carrier in the Electronic-Key is equipped with a combined memory:
116 bytes E2PROM (programmable) plus 8 bytes ROM (serial number)
The programmable memory of 116 bytes is organized in 4-byte blocks. This means a multiple of 4-byte-sized
blocks must always be written.
3.1.2 Additional functions of the version EKS FSA
The version EKS FSA has two additional switching contacts (semiconductor relay) LA1/LA2 and optionally
LB1/LB2 that are switched off as long as there is no Electronic-Key in the Electronic-Key adapter or if it is not
possible to read the Electronic-Key.
The switching contacts are electrically isolated from the device electronics and from each other. Either AC or
DC can be switched.
Each of the contacts is operated with diversity by a dedicated processor that opens the contacts on removal of
the Electronic-Key (see figure Block diagram EKS FSA).
Figure 2: Block diagram EKS FSA
Due to separate evaluation of channel LA and channel LB, the EKS FSA device can be used in conjunction with
a safe evaluation device in safety-related applications. Integrated voltage monitoring switches off the switching
contacts LA and LB if the power supply is outside the permitted tolerance (see chapter 4.2).
Information!
The switching contacts FSA close when the Electronic-Key is in place, irrespective of the data allocation
in the memory.

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4 Technical data
4.1 Dimension drawing of Electronic-Key adapter
For installation in a control panel you must provide a cut-out 33 mm x 68 mm according to DIN 43700.
4.1.1 Version EKS-A-IEX-G01-ST02/03 with Ethernet interface
4.1.2 Version EKS-A-IEXA-G01-ST02/03/04 (EKS FSA) with Ethernet interface

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4.2 Technical data of Electronic-Key adapter
Attention!
All the electrical connections must either be isolated from the mains supply by a safety transformer
according to EN IEC 61558-2-6 with limited output voltage in the event of a fault, or by other equivalent
isolation measures.
General parameters
Value
Unit
min.
typ.
max.
Housing
Plastic (PA 6 GF30 gray)
Degree of protection acc. to EN 60529
IP 67 in mounted condition
Ambient temperature at UB = DC 24 V
0
+ 55
°C
Mounting cut-out acc. to DIN 43700
33 x 68
mm
Power supply connection
Plug-in connection terminal, 3-pin, with screw terminal
(tightening torque 0.22 Nm),
conductor cross-section 0.14 ... 1.5 mm²
Operating voltage UB
(regulated, residual ripple < 5%)
20
24
28
DC V
Current consumption IB
150
mA
Interface, data transfer
Interface to the control system
Industrial Ethernet (IEEE 802.3)
Transfer protocol
TCP/IP
Data transfer rate (full duplex)
10/100
Mbit/s
Connection for Ethernet interface
1 x RJ45 socket
Data line
2 x 2 twisted-pair copper cables, screened; min. category 5
Cable length
100
m
LED indicator
Green: “Ready” (in operation)
Yellow: “Electronic-Key active” *
Red: “Fault”
Version FSA (For Safety Applications) –parameters for floating semiconductor switching contacts LA and LB
Switching contact connection
Plug-in connection terminal, 4-pin, with screw terminal
(tightening torque 0.22 Nm),
conductor cross-section 0.14 ... 1.5 mm²
Power supply U for load (LA, LB)
24
30
V
Switching current (with overload protection)
1
10
50
mA
Output voltage UA(LA, LB) in switched state
U x 0.9
U
V
Resistance in switched state
35
ohms
Capacitive load
1
µF
Utilization category acc. to AC-12
EN IEC 60947-5-2 AC-15
DC-12
DC-13
50 mA / 24 V
Difference time of the outputs** (LB first)
200
ms
Reliability values acc. to EN ISO 13849-1 (FSA version only)
Category (with downstream safe evaluation)
3
MTTFD
Evaluation of data channel and one
switching contact LA
416
years
Evaluation of data channel and both
switching contacts LA and LB
803
years
DC
92
%
* The LED illuminates yellow if there is a functional Electronic-Key in the Electronic-Key adapter.
** If the Ethernet interface is accessed during placement or removal of the Electronic-Key,
the difference time can be more than 200 ms.

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4.3 Connector assignment
4.3.1 Connection socket for Ethernet interface
The connection on the Electronic-Key adapter is realized as an RJ45 (8P8C) socket corresponding to
ISO IEC 61754-24.
Pin
Function
1
Transmit Data + (TD+)
2
Transmit Data - (TD-)
3
Receive Data + (RD+)
6
Receive Data - (RD-)
4.3.2 Connection terminal assignment
Information!
The plug-in connection terminals are included with the Electronic-Key adapter.
4.3.2.1 Connection of power supply
1 2 3
Plug-in connection terminal, 3-pin,
with screw terminal
Pin
Designation
Function
1
UB
Power supply DC + 24 V
2
0V
Power supply DC 0 V
3
Function earth
Electrically connected to the housing
4.3.2.2 Plug-in screw terminals for outputs LA1/LA2 and LB1/LB2 (EKS FSA only)
Plug-in connection terminal,
2 x 2-pin,
with screw terminal
Pin
Channel
Function
1
LA
NO contact, channel LA
2
3
LB
NO contact, channel LB
4

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4.4 DIP switch settings
The device has three DIP switches (S1, S2, S3).
DIP switch
Function
S1
(4-fold)
S1.1 … S1.4; write and read settings
S2
(8-fold)
S2.1 … S2.8; setting of a fixed DNS name (required only for special applications)
S3
(4-fold)
S3.1 …S3.4; settings for network connection and service
Information!
The settings are adopted only when the power supply is switched on.
4.4.1 DIP switch S1
DIP
switch
Function
Factory setting
S1.1
ON = write protection for Electronic-Key read/write
OFF
S1.2
No function
OFF
S1.3
No function
OFF
S1.4
No function
OFF
Information!
It is imperative that all DIP switches without a function (S1.2, S1.3 and S1.4) are set to OFF! In this
way problems with any functions added in the future will be avoided.
4.4.2 DIP switch S2
DNS
name
LSB
S2.1
S2.2
S2.3
S2.4
S2.5
S2.6
S2.7
MSB
S2.8
EKS000
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
EKS001
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
EKS002
OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
EKS003
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
…
…
…
…
…
…
…
…
…
EKS254
OFF
ON
ON
ON
ON
ON
ON
ON
EKS255
ON
ON
ON
ON
ON
ON
ON
ON

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Information!
Using the DIP switch S2, it is possible to set an EKS name that is used for addressing the device in the
network in conjunction with a DHCP server. This name consists of the fixed code EKS plus a
configurable number between 001 and 254 that can be used in all system environments with DHCP
support. The station name for a specific Electronic-Key adapter would then be EKS027, for example.
The DIP switch S2 is relevant specifically in conjunction with the Siemens SINUMERIK DHCP address
assignment routine (see chapter 6.1.1.3 Operation in the Siemens system network).
In this way it is possible to set the identical address by copying the DIP switch settings if a device is
replaced.
4.4.3 DIP switch S3
Function
S3.1
S3.2
S3.3
S3.4
Fixed IP address
OFF
OFF
OFF
Default IP address 192.168.1.1
OFF
ON
OFF
Obtain IP address from DHCP server
OFF
OFF
ON
Obtain IP address from a SINUMERIK control system
OFF
ON
ON
Internal function, leave switch OFF
OFF
Permit configuration via the web interface
OFF
OFF
OFF
OFF
(Factory setting: all in OFF position)
= any switch position
Information!
The use of the DIP switches to assign the IP address is described in the following in chapter 6.1.1.
To prevent unauthorized changes to the network, it is sensible to deactivate the web interface after use.
For this purpose switch S3.1 is set to ON.
4.5 LED indicator
The Electronic-Key adapter operating states are indicated using a 3-color LED on the front.
The illumination of the LED in any color indicates the presence of the operating voltage.
Color
Operating status
Description
Red
Electronic-Key
adapter power-up or
fault
After the application of the power supply, the LED is constantly illuminated red during
power-up. The completion of the process is indicated by a change in this state after
approx. 20 seconds. If the LED then flashes red quickly, it is an indication of a network
fault.
Green
Ready
Network connected.
Yellow
Electronic-Key active
Network connected. Electronic-Key is in the Electronic-Key adapter.
Red/green
Red/yellow
Fault
LED flashing slowly red/green (without Electronic-Key) or red/yellow (with Electronic-
Key). Network was connected and a network fault then occurred.

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5 Mounting
Warning!
Mounting must be performed only by authorized personnel.
After mounting, again check the Electronic-Key adapter for firm seating and correct sealing on the front
panel.
Attention!
To achieve the degree of protection IP 67, it is necessary to install the Electronic-Key adapter in a
clean, flat metal plate at least 2 mm thick and to tighten the screws with a tightening torque of 0.25 ...
0.35 Nm.
A suitable strain relief must be provided for the connecting cables in order to avoid damage to the
connection sockets or malfunctions.
The Electronic-Key adapter is intended for mounting in control panels with a cut-out measuring
33 mm x 68 mm according to DIN 43700 (see chapter 4.1). The device is fastened using screw clamp elements
from the rear side of the panel.
Information!
The screw clamp elements for front panel mounting are included with the Electronic-Key adapter.
1. Insert the Electronic-Key adapter, with seal already bonded in place, into the mounting cut-out from the
front.
2. Insert screw clamp elements into the housing of the Electronic-Key adapter from the side up to the stop and
tighten with 0.25 …0.35 Nm.
Attention!
The device may be damaged if the tightening torque exceeds 0.35 Nm.

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6 Electrical connection
Danger!
Electrical connection may be performed only by authorized personnel trained in EMC and with the
device and wiring isolated.
Warning!
For use and operation as per the requirements, a power supply with the feature “for use in class
2 circuits” must be used.
Attention!
The Electronic-Key adapter is allowed to be connected only if it is electrically isolated.
Otherwise the Electronic-Key adapter may be damaged.
Attention!
If connected incorrectly, the Electronic-Key adapter may be damaged.
Observe electrical characteristics and terminal assignment (see chapter 4.2 Technical data of
Electronic-Key adapter).
Attention!
All the electrical connections must either be isolated from the mains supply by a safety transformer
according to IEC/EN 61558-2-6 with limited output voltage in the event of a fault, or by other equivalent
isolation measures.
Attention!
When connecting, the operating organization must ensure compliance with the EMC protection
requirements in accordance with EN 55011 and EN 61000-6-2.
Attention!
The equipotential bonding system of the machine installation must comply with EN 60204-1, section 8,
Equipotential bonding.
Attention!
Do not lay connecting cables in the immediate vicinity of sources of interference.
6.1 Ethernet connection
The interface for the Electronic-Key adapter is compatible with the standards ISO/IEC 61754-24 and IEC 61158.
The Electronic-Key adapter is operated in full-duplex mode with 10 Mbit/s or 100 Mbit/s.
Information!
Only a screened 100 BaseTX cable, twisted pair, Cat 5 or higher, is permitted for use as the
connecting cable. The maximum cable length is 100 m.
It may be necessary to provide additional shielding in conditions with a high level of EMC
interference.
A separate switch may be required for the Ethernet TCP/IP connection.

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6.1.1 Ethernet configuration
Using the DIP switch S3, the Electronic-Key adapter can be configured for the following operating modes (see
chapter 4.4.3):
With a fixed IP address
As a DHCP client with dynamic IP address
As a DHCP client for a SINUMERIK control system with dynamic IP address based on a fixed station name
(see chapter 4.4.2)
In addition, the following service functions can be set with DIP switch S3:
Reset to default IP address (see chapters 4.4.3 and 6.1.1.1)
Permit or prohibit configuration via a web interface (see chapters 4.4.3 and 7.2)
The individual functions are described below in detail.
6.1.1.1 Fixed IP address and default IP address
Fixed IP address
In this operating mode, communication with the Electronic-Key adapter is via a fixed IP address. In the default
setting on delivery, the factory-set default IP address is 192.168.1.1 and the subnet mask is 255.255.255.0.
Information!
This operating mode is not suitable for operation in conjunction with a DHCP server.
The DIP switches S3.3 and S3.4 always remain OFF in this operating mode (see DIP switch settings
in chapter 4.4.3).
On powering up the Electronic-Key adapter, the fixed IP address last set is always active after the
application of the power supply in this operating mode.
You can assign an individual, fixed IP address via the web interface of the Electronic-Key adapter (see chapter
7.2). To do this, access via a web interface must be enabled (see DIP switch settings in chapter 4.4.3).
Default IP address
Every Electronic-Key adapter has the factory-set default IP address 192.168.1.1 and the subnet mask
255.255.255.0.
Information!
If you have forgotten your self-defined IP address, you can reset the Electronic-Key adapter to the
default address again. The self-defined address is then overwritten by the default address.
For this purpose proceed as follows. The Electronic-Key adapter can be connected to the network or
disconnected from the network during this routine.
1. Disconnect Electronic-Key adapter from the power supply.
2. Set DIP switch S3.3 (see DIP switch settings in chapter 4.4.3) to ON.
3. Apply power supply. Wait until the Electronic-Key adapter has fully powered up. During power-up the LED is
illuminated red constantly. The completion of the process is indicated by a change in this state after approx.
20 seconds. The Electronic-Key adapter is now reset to the default IP address 192.168.1.1 and the subnet
mask 255.255.255.0.
4. Disconnect Electronic-Key adapter from the power supply. Set DIP switch S3.3 to OFF (see DIP switch
settings in chapter 4.4.3).
After the application of the power supply, the Electronic-Key adapter now powers up again with the default IP
address. A new, fixed, self-defined IP address can now be set again using the web interface (see above).

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6.1.1.2 Dynamic IP address
In this operating mode, the Electronic-Key adapter is a DHCP client. The IP address is assigned by a DHCP
server (see DIP switch settings in chapter 4.4.3).
Information!
This operating mode is unsuitable for operation in a network with fixed IP addresses.
6.1.1.3 Operation in the Siemens system network
The Siemens system architecture is designed so that the HMI PRO (Human Machine Interface) software and
the operating system run on one or more NCUs (Numeric Control Units)/PCUs (PC Units). The TCP/IP protocol
is used for communication.
In the case of the SINUMERIK solution line (sl), EKS communicates with an NCU. Linux is used here as the
operating system in the NCU. Simple TCUs (Thin Client Units) with MCPs (Machine Control Panels) are
provided at the control station for operation and visualization. A control station typically consists of a TCU and
MCP. Communication between TCU, MCP and NCU takes place completely via Ethernet.
In the case of the SINUMERIK powerline, EKS communicates with a PCU 50. Windows® is used as the
operating system here. If the Electronic-Key adapter is to be operated physically remote from the PCU 50, the
Electronic-Key adapter with Ethernet interface is also used with powerline.
Each station in a system network is assigned an unambiguous SINUMERIK station name. The EKS can be
integrated in this network. According to the principle of flexible assignment of stations to each other, it is
possible to define which stations are to work together, i.e. which TCU is to access which NCU/PCU with which
MCP. This means that an EKS Electronic-Key adapter can be assigned to a specific control station.
A DHCP server runs on the NCU/PCU, and a DHCP client runs on the connected network stations. With this
SINUMERIK DHCP address assignment routine, an unambiguous SINUMERIK station name is made up of an
assigned device name and a number. In the case of the EKS Electronic-Key adapter, this station name consists
of the identifier EKS and a consecutive number between 001 and 254 (around 1 byte). The numbers 000 and
255 are not supported by the SINUMERIK address assignment routine. The station name for a specific EKS
Electronic-Key adapter would then be EKS027, for example. No programming device or PC is required for setup
within the Siemens network. When carrying out setup, it must be ensured that each device receives a separate
number in a network. An unambiguous IP address is then dynamically assigned to this name via DHCP. DNS is
used to ensure that each device can be addressed by its name.
EKS can obtain the IP address corresponding to the SINUMERIK DHCP address assignment routine. Activation
of the SINUMERIK address assignment routine must be set by means of the DIP switch S3 (see chapter 4.4.3).
The 3-digit numbering as part of the station name (i.e. 027 in the example above) can be set by means of the
DIP switch S2 (see chapter 4.4.2).
System integration in the user software is performed by Siemens.

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6.2 Connection of power supply
(For information on connector assignment, see chapter 4.3.2.1 Connection of power supply)
It is imperative that the following points are observed:
The connections must be made as appropriate to maintain EMC performance.
A power supply of suitable EMC performance must be used for the power supply.
Conductor cross-section maximum 1.5 mm².
Tighten the screws on the terminal plug to 0.22 Nm.
6.3 Connection of function earth
The function earth is connected via terminal 3 on the plug-in screw terminals for the power supply. This
connection is electrically connected internally to the housing of the Electronic-Key adapter.
Information!
The function earth must be connected to PE!
6.4 Connection of the semiconductor switching contacts (for EKS FSA
only)
Warning!
Incorrect connection or errors in the safety-related integration of the EKS FSA can lead to fatal injury.
For this reason, observe the following safety aspects:
It is not possible to generate a safe signal by using only the switching contacts LA1/LA2 and
LB1/LB2. Safe, downstream evaluation is always necessary. Use of the switching contact LB1/LB2
(for the compact version only) is optional.
Safe evaluation must always be dual-channel:
Evaluation of switching contact LA1/LA2 as channel LA together with evaluation of the data line as
channel LB.
Information!
The switching contact LA1/LA2 is used with functionally safe applications. The function that can be
evaluated in terms of safety engineering is the reliable detection that an Electronic-Key has not been
placed.