Beckhoff EPI4 Series Operator's manual

Documentation | EN
EPI4xxx, ERI4xxx
IO-Link box with 2 analog inputs + 2 analog outputs
2022-08-29 | Version: 1.6

Table of contents
EPI4xxx, ERI4xxx 3Version: 1.6
Table of contents
1 Foreword....................................................................................................................................................5
1.1 Notes on the documentation .............................................................................................................5
1.2 Safety instructions.............................................................................................................................6
1.3 Documentation issue status ..............................................................................................................7
2 Product overview ......................................................................................................................................8
2.1 Module overview: EPI4xxx, ERI4xxx.................................................................................................8
2.2 EPI4374-0002, ERI4374-0002 ..........................................................................................................9
2.2.1 Introduction ........................................................................................................................9
2.2.2 Technical data.................................................................................................................. 10
2.2.3 Process image ................................................................................................................. 13
3 IO-Link basics..........................................................................................................................................14
3.1 IO-Link system layout......................................................................................................................14
3.2 Establishment of IO Link communication ........................................................................................16
3.3 Device description IODD.................................................................................................................17
3.4 Parameter server ............................................................................................................................17
3.5 Data transfer rate ............................................................................................................................17
4 Mounting and connection.......................................................................................................................18
4.1 Mounting .........................................................................................................................................18
4.1.1 Dimensions ......................................................................................................................18
4.1.2 Fixing................................................................................................................................ 19
4.1.3 Tightening torques for plug connectors............................................................................ 19
4.2 IO-Link connection ..........................................................................................................................20
4.2.1 IO-Link master connection ............................................................................................... 20
4.2.2 Connection IO-Link Device .............................................................................................. 22
4.2.3 IO-Link status LED ........................................................................................................... 22
4.3 Status LEDs for power supply.........................................................................................................22
4.4 Signal connection............................................................................................................................23
4.5 UL Requirements ............................................................................................................................25
4.6 Cabling ............................................................................................................................................26
4.7 Disposal ..........................................................................................................................................27
5 Commissioning and configuration........................................................................................................28
5.1 Configuration of the IO link master..................................................................................................28
5.2 Configuration of the IO-Link devices ...............................................................................................29
5.2.1 Open the IO link configuration tool................................................................................... 29
5.2.2 Integrating IO-Link devices .............................................................................................. 30
5.2.3 Removal of IO-Link devices ............................................................................................. 39
5.2.4 Activating the configuration .............................................................................................. 40
5.3 Settings of the IO-Link devices .......................................................................................................41
5.4 EPIxxxx, ERIxxxx - Setting of the IO-Link device parameters ........................................................43
5.5 ADS access to device parameters ..................................................................................................54
5.6 Data stream and correction calculation...........................................................................................57
5.7 EPI43xx, ERI43xx - setting the IO-Link device parameters ............................................................60
5.7.1 Selection of the analog signal type, index 0x3800:0n ...................................................... 60

Table of contents
EPI4xxx, ERI4xxx4 Version: 1.6
5.7.2 Presentation, index 0x08n0:02......................................................................................... 61
5.7.3 Siemens bits, index 0x08n0:05 ........................................................................................ 61
5.7.4 Limit 1 (Index 0x08n0:13) and Limit 2 (Index 0x08n0:14), Swap Limit bits...................... 62
5.7.5 Filter mode (FIR and IIR), Index 0x0800:06, 0x0800:15 .................................................. 63
5.7.6 Diagnostics (index 0x0A00) ............................................................................................. 65
6 Device parameters ..................................................................................................................................66
6.1 Object overview...............................................................................................................................66
6.2 Object description and parameterization.........................................................................................70
7 Appendix..................................................................................................................................................78
7.1 General operating conditions ..........................................................................................................78
7.2 Accessories.....................................................................................................................................79
7.3 Support and Service........................................................................................................................80

Foreword
EPI4xxx, ERI4xxx 5Version: 1.6
1 Foreword
1.1 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
EPI4xxx, ERI4xxx6 Version: 1.6
1.2 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.
Description of instructions
In this documentation the following instructions are used.
These instructions must be read carefully and followed without fail!
DANGER
Serious risk of injury!
Failure to follow this safety instruction directly endangers the life and health of persons.
WARNING
Risk of injury!
Failure to follow this safety instruction endangers the life and health of persons.
CAUTION
Personal injuries!
Failure to follow this safety instruction can lead to injuries to persons.
NOTE
Damage to environment/equipment or data loss
Failure to follow this instruction can lead to environmental damage, equipment damage or data loss.
Tip or pointer
This symbol indicates information that contributes to better understanding.

Foreword
EPI4xxx, ERI4xxx 7Version: 1.6
1.3 Documentation issue status
Version Comment
1.6 • Product images updated
• Structure update
1.5 • Technical data updated
1.4 • Dimensions updated
• UL requirements updated
1.3 • Figure in chapter “introduction” updated
1.2 • Front page updated
1.1 • Chapter "Process data" added
1.0 • First publication
0.5 • First preliminary version
Firm and hardware version
The documentation refers to the firm and hardware status that was valid at the time it was prepared.
The properties of the modules are subject to continuous development and improvement. Modules having
earlier production statuses cannot have the same properties as modules with the latest status. Existing
properties, however, are always retained and are not changed, so that these modules can always be
replaced by new ones.
The firmware and hardware version (delivery state) can be found in the batch number (D number) printed at
the side of the IO-Link box module.
Syntax of the batch number (D-number)
D: WW YY FF HH
WW - week of production (calendar week)
YY - year of production
FF - firmware version
HH - hardware version
Example with D no. 29 10 02 01:
29 - week of production 29
10 - year of production 2010
02 - firmware version 02
01 - hardware version 01

Product overview
EPI4xxx, ERI4xxx8 Version: 1.6
2 Product overview
2.1 Module overview: EPI4xxx, ERI4xxx
Module Number of analog Signal
connection
Housing Comment
Inputs Outputs
EPI4374-0002 2 2 4 x M12 Industrial housing two configurable analog inputs and two
configurable analog outputs
ERI4374-0002 2 2 4 x M12 Die-cast zinc housing two configurable analog inputs and two
configurable analog outputs

Product overview
EPI4xxx, ERI4xxx 9Version: 1.6
2.2 EPI4374-0002, ERI4374-0002
2.2.1 Introduction
1 |
2 |
3 |
4 |
5 |
L+
P24
L-
C/Q
N24
IO-Link
interface
Class B
1 |
2 |
3 |
4 |
5 |
P24
Input +
N24
Input -
Shield
Analog
inputs
EPI4374-0002 ERI4374-0002
Analog
outputs
1 |
2 |
3 |
4 |
5 |
Output +
P24
Output -
N24
Shield
2-channel analog input + 2-channel analog output ±10V or 0/4...20mA, parameterizable, 16-bit
The EPI4374-0002 and ERI4374-0002 IO-Link box modules have two analog inputs and two analog outputs,
which can be parameterized individually, so that they process or generate signals either in the -10 to +10V
range or the 0/4 to 20mA range. The resolution for the current and voltage signals is 16bit (signed).
For the outputs the voltage or output current is fed to the process level, electrically isolated with a resolution
of 15bit (default). The two output channels and the 24VDC supply have a common ground potential.
The EPI4374-0002 and the ERI4374-0002 are Class B devices, i.e. a 5-core cable is required for connection.
The IO-Link box modules with die-cast zinc housing (ERI series) can be used in extremely challenging
industrial and process environments. The fully sealed design and the metal surface of the ERI series make it
ideal for applications requiring enhanced load capacity and protection against welding spatter, for example.
Quick links
Technical data [}10]
Signal connection [}23]
Commissioning [}28]

Product overview
EPI4xxx, ERI4xxx10 Version: 1.6
2.2.2 Technical data
All values are typical values over the entire temperature range, unless stated otherwise.
IO-Link
Connection 1x M12 plug, 5-pin, A-coded
Data transfer rate 230.4kbaud (COM3)
Specification version IO-Link V1.1, ClassB
Requirements for IO-Link master V1.1
Current consumption from L+ 100mA
Current consumption from P24 Current for sensor supply
Current for actuator supply
Electrical isolation L+/P24 yes
Analog inputs
Number 2
Connection 2x M12 socket, 5-pin
Input type Differential
Measuring range Adjustable:
• -10…+10V (factory setting)
• 0…10V
• 0…20mA
• 4…20mA
Specifications of the measuring ranges [}11]
Sensor supply 24VDC from P24, not short-circuit proof
Analog outputs
Number 2
Connection 2x M12 socket, 5-pin
Output signal range Adjustable:
• -10…+10V (factory setting)
• 0…10V
• 0…20mA
• 4…20mA
Specifications of the output signal ranges [}11]
Actuator supply 24VDC from P24, not short-circuit proof
Housing data EPI4374-0002 ERI4374-0002
Dimensions WxHxD 30mmx 126mmx 26.5mm (without plug connectors)
Weight approx.165g approx.250g
Installation position variable
Material PA6 (polyamide) Die-cast zinc

Product overview
EPI4xxx, ERI4xxx 11Version: 1.6
Environmental conditions
Ambient temperature during operation -25… +60°C
-25… +55°C according to cURus
Ambient temperature during storage -40… +85°C
Vibration resistance, shock resistance conforms to EN60068-2-6/ EN60068-2-27
Additional checks
EMC immunity / emission conforms to EN61000-6-2/ EN61000-6-4
Protection class IP65, IP66, IP67 (conforms to EN60529)
Approvals/markings
Approvals/markings*) CE, cURus [}25]
*) Real applicable approvals/markings see type plate on the side (product marking).
2.2.2.1 Measuring ranges
Analog inputs
The measuring range can be switched during operation. The following table shows the electrical
specifications depending on the selected measuring range.
Technical data Measuring range
-10…10V 0…10V 0…20mA 4…20mA
Input type Differential
Input resistance >200kΩ >200kΩ 85Ω typ. + diode
voltage
85Ω typ. + diode
voltage
Digital resolution 16-bit 15-bit 15-bit 15-bit
Measuring error < 0.3% relative to full scale value
Conversion time approx. 100µs
Input filter limit frequency 5kHz
Value of the least significant
bit
approx. 305µV approx. 305µV approx. 610µA approx. 488µA
The analog inputs and outputs have a common analog ground potential. The analog ground potential is
electrically isolated from all other ground potentials in the box.
2.2.2.2 Output signal ranges
Analog outputs
The output signal range can be switched during operation. The following table shows the electrical
specifications depending on the selected output signal range.
Technical data Output signal range
-10…10V 0…10V 0…20mA 4…20mA
Load resistor / load >5kΩ >5kΩ <500Ω <500Ω
Digital resolution 16-bit 15-bit 15-bit 15-bit
Output error < 0.1 % (ambient temperature 0…+55°C)
< 0.2 % (ambient temperature < 0°C or > 55°C)
related to the final value.
Conversion time approx. 40µs
Value of the least significant
bit
approx. 305µV approx. 305µV approx. 610µA approx. 488µA

Product overview
EPI4xxx, ERI4xxx12 Version: 1.6
The analog inputs and outputs have a common analog ground potential. The analog ground potential is
electrically isolated from all other ground potentials in the box.

Product overview
EPI4xxx, ERI4xxx 13Version: 1.6
2.2.3 Process image
Channel1 Status and Channel1 Value
The IO-Link device is connected to IO-Link port2 of the IO-Link master (EP6224-2022).
• The status information (16-bit) of the 1st analog input channel can be found under Channel1 Status.
Here as an example the process image of the EPI4374-0002.
• The analog value (16-bit) of the 1st analog input channel can be found under Channel1 In Value.
•Channel2
The data of the 2nd analog input channel is structured identically to that of the 1st channel.
Fig.1: EPI4374-0002 - Process image in the tree view
Underrange: Value of the analog input is less than 0/4mA or -10/0V
Overrange: Value of the analog input is greater than 20mA or +10V
Limit1 / Limit 2: with activated Limit 1 (object 80x0:07= 1)/ Limit 2 (object 80x0:08= 1)
1: means value < Limit 1 (set in object 0x80x0:13) / Limit 2 (set in object 0x80x0:14)
2: means value > Limit 1 (set in object 0x80x0:13) / Limit 2 (set in object 0x80x0:14)
3: means value = Limit 1 (set in object 0x80x0:13) / Limit 2 (set in object 0x80x0:14)
Error: This bit is set if overrange or underrange was detected.
Channel3 Out Value, Channel4 Out Value
• The data of the two analog output channels (channel 3 and channel 4) can be found under Channel3
Out Value and Channel 4 Out Value

IO-Link basics
EPI4xxx, ERI4xxx14 Version: 1.6
3 IO-Link basics
IO-Link is a communication system for connecting intelligent sensors and actuators to an automation system.
The IEC61131-9 standard specifies IO-Link under the designation "Single-drop digital communication
interface for small sensors and actuators" (SDCI).
Both the electrical connection data and the communication protocol are standardized and summarized in the
IO-Link Spec.
3.1 IO-Link system layout
An IO-Link system consists of an IO-Link master and one or more IO-Link devices, i.e. sensors or actuators.
The IO-Linkmaster provides the interface to the higher-level controller and controls communication with the
connected IO-Linkdevices.
The IO-Linkmasters from Beckhoff have several IO-Linkports, to each of which one IO-Linkdevice can be
connected. IO-Link is not a fieldbus, but rather a point-to-point connection.

IO-Link basics
EPI4xxx, ERI4xxx 15Version: 1.6
CAUTION
Risk of device damage
The IO-Linkdevices must be supplied from the 24V power supply of the IO-Linkmaster provided for this
purpose. Otherwise, damage to the IO-Linkport is possible.

IO-Link basics
EPI4xxx, ERI4xxx16 Version: 1.6
3.2 Establishment of IO Link communication
The establishment of the IO-Link communication is illustrated in Fig. Establishment of IO-Link
communication. This illustrates in particular the sequence when automatically scanning [}34] the IO-Link
port.
Fig.2: Establishment of IO Link communication
• If an IO-Link device is connected to a master port, the master attempts to establish communication. A
defined signal level, the wake-up pulse, signals to the device that UART bytes are to be sent from now
on.
From this point on, all data will be interpreted by the IO-Link device as UART bytes.
• The master runs through all baud rates [}17], starting with the fastest baud rate
(COM3=230kbaud). A successful connection has been established when the slave responds to the
wake-up pulse.
• First of all the master reads the basic parameters (Vendor ID, Device ID, process data length,
telegram type and cycle time) and compares them with the existing configuration.
• If no connection could be established to the device, or if the saved parameters differ from those read,
the corresponding error is output.
• If the saved parameters differ from those read, the IO-Link device changes to the PREOP state.
If the IO-Link device specification is V1.1, the parameter server [}17] is now executed. If the IO-Link
device specification is V1.0, this step is omitted and the device changes directly to OP.
• Finally the cycle time is written and the device changes to OP. After that the master cyclically
exchanges data with the device.

IO-Link basics
EPI4xxx, ERI4xxx 17Version: 1.6
3.3 Device description IODD
IO-Link devices possess individual system information in the form of an IO device description (IODD), which
contains:
• Communication features
• Device parameters with value range and default values
• Identification, process and diagnostic data
• Device data
• Text description
• Picture of the device
• Vendor's logo
If the IODD is imported, then the device data are automatically detected during automatic scanning [}34]
with TwinCAT and adopted in the System Manager.
3.4 Parameter server
In order to be able to use the functionality of the parameter server, both the IO-Link master and the IO-Link
device must be specified to V1.1. The IO-Link revision of the device can be read for the individual port under
Settings [}41]. All IO-Link masters from Beckhoff with current firmware support the IO-Link specification
V1.1.
• The parameter server in the IO-Link master contains parameter data that are saved in the IO-Link
device. The memory capacity is max. 2kbyte (including header).
If the IO-Link device is exchanged, then the data are loaded from the parameter server into the new
device. The requirement for this is that the device is of the same type (VendorID and DeviceID must be
the same).
• If a new IO-Link device is configured, then the IO-Link master loads the parameters from the IO-Link
device into the parameter server when starting for the first time.
Data from other IO-Link devices that are already configured (VendorID and DeviceID do not
correspond to the configured device) are overwritten.
• At each further start the IO-Link master uses a checksum to check whether the data in the parameter
server correspond to those on the IO-Link device and if necessary downloads them to the device.
• If the parameters change during the device runtime, this can be reported to the Master via the store
button [}49] (ParamDownloadStore [}50]). The master then starts the parameter server with an
upload.
• By default the event is not set each time the parameters are written, therefore the end of the
parameterization procedure has to be reported to the IO-Link device via the store button [}49]
(ParamDownloadStore [}50]).
The IO-Link device then sends the corresponding event to the master. The data are loaded into the
parameter server.
• In the case of a pre-programmed IO-Link device, no download takes place from the parameter server
to the device.
3.5 Data transfer rate
An IO-Link master according to specification V1.1 supports all three transmission methods and automatically
adjusts the baud rate to that of the IO-Link device.
An IO-Link device usually supports only one baud rate. IO-Link devices with different baud rates can be
connected to the various ports of the master.
• COM1 = 4.8 kbaud
• COM2 = 38.4 kbaud
• COM3 = 230.4 kbaud

Mounting and connection
EPI4xxx, ERI4xxx18 Version: 1.6
4 Mounting and connection
4.1 Mounting
4.1.1 Dimensions
30
126
119
26.5
23
13.5
Ø 3.5
All dimensions are given in millimeters.
The drawing is not true to scale.
Housing features
Housing material PA6 (polyamide)
Sealing compound polyurethane
Mounting two mounting holes Ø 3.5 mm for M3
Metal parts brass, nickel-plated
Contacts CuZn, gold-plated
Installation position variable
Protection class IP65, IP66, IP67 (conforms to EN 60529) when screwed together
Dimensions (H x W x D) approx. 126 x 30 x 26.5 mm (without connectors)

Mounting and connection
EPI4xxx, ERI4xxx 19Version: 1.6
4.1.2 Fixing
Protect connectors against soiling
Protect all connections from contamination during module installation! Protection class IP65 can
only be guaranteed if all cables and connectors are connected! Unused connections must be pro-
tected with the appropriate connectors! Connector sets see catalog.
Modules with narrow housing are installed with two M3 screws.
Modules with wide housing are installed with two M3 screws in the mounting holes in the corners or two M4
screws in the central fastening holes.
The bolts must be longer than 15mm. The fastening holes in the modules have no thread.
Note when mounting that the overall height is increased further by the fieldbus connections. See the
Accessories section.
Mounting Rail ZS5300-0001
The mounting rail ZS5300-0001 (500 mm x 129 mm) allows the time saving assembly of modules.
The rail is made of stainless steel, 1.5 mm thick, with already pre-made M3 threads for the modules. The rail
has got 5.3 mm slots to mount it via M5 screws to the machine.
Fig.3: Mounting Rail ZS5300-000
The mounting rail is 500 mm long, that way 15 narrow modules can be mounted with a distance of 2 mm
between two modules. The rail can be cut to length for the application.
Mounting Rail ZS5300-0011
The mounting rail ZS5300-0011 (500 mm x 129 mm) has in addition to the M3 treads also pre-made M4
treads to fix 60 mm wide modules via their middle holes.
Up to 14 narrow or 7 wide modules may be mixed mounted.
4.1.3 Tightening torques for plug connectors
Screw M12 connectors tight with a torque wrench. (e.g. ZB8801 from Beckhoff)
Torque: 0.6Nm.

Mounting and connection
EPI4xxx, ERI4xxx20 Version: 1.6
4.2 IO-Link connection
4.2.1 IO-Link master connection
IO-Link interface
The IO-Link specification defines various IO-Link pin assignment, which are described in the following
section.
The switching and communication line is marked with (C/Q).
Port Class A (type A): The function of pin 2 and pin 5 is not preset. The vendor can assign an additional
digital channel to pin 2. Port Class B (type B): Pin 2 and Pin 5 are used for an additional power supply. The
information regarding the pin assignment of your module can be found in the chapter "Introduction".
Fig.4: Pin assignment Port Class A, Pin 2 not connected
In the case of Class A modules an additional digital input or output (I/Q) can be connected to Pin 2.
Fig.5: Pin assignment Port Class A, Pin 2 connected
Port Class B (type B): For devices with higher current demand, an additional power supply is provided via pin
2 and pin 5.
Fig.6: Pin assignment Port Class B