Beckhoff EPP3504-0023 How to use

Short documentation | EN
EPP3504-0023
4-channel measuring bridge,(SG) full/half/quarter bridge, 24 bit, 10 ksps
2023-02-21 | Version: 1.2

Table of contents
EPP3504-0023 3Version: 1.2
Table of contents
1 Foreword....................................................................................................................................................7
1.1 Notes on the documentation .............................................................................................................7
1.2 Safety instructions.............................................................................................................................8
1.3 Documentation Issue Status .............................................................................................................9
1.4 Version identification of EtherCAT devices .......................................................................................9
1.4.1 General notes on marking..................................................................................................9
1.4.2 Beckhoff Identification Code (BIC) ................................................................................... 10
1.4.3 Electronic access to the BIC (eBIC).................................................................................12
2 Product group: EtherCATPBox modules............................................................................................14
3 Product overview ....................................................................................................................................15
3.1 EPP3504-0023 - Introduction..........................................................................................................15
3.2 EPP3504-0023 - Technical data .....................................................................................................16
3.2.1 EPP3504-0023 overview measurement ranges............................................................... 18
3.2.2 Measurement ±10 V.........................................................................................................20
3.2.3 Measurement ±80 mV......................................................................................................22
3.2.4 RTD/Pt1000 measurement .............................................................................................. 24
3.2.5 Potentiometer measurement............................................................................................31
3.2.6 Measurement SG 1/1 bridge (full bridge) 4/6-wire connection.........................................33
3.2.7 Measurement SG 1/2 bridge (half bridge) 3/5-wire connection........................................ 38
3.2.8 Measurement SG 1/4 bridge (quarter-bridge) 2/3-wire connection..................................43
3.3 Process data interpretation .............................................................................................................52
3.4 General Information on Measuring Accuracy/Measurement Uncertainty........................................53
3.5 Scope of supply...............................................................................................................................58
4 Commissioning .......................................................................................................................................59
4.1 Notes to short documentation .........................................................................................................59
4.2 CoE overview ..................................................................................................................................60
4.2.1 General access to online CoE values .............................................................................. 60
4.2.2 0x10E2 Manufacturer-specific Identification Code...........................................................65
4.2.3 0x10F3 Diagnosis History ................................................................................................ 65
4.2.4 0x60n0 PAI Status Ch.[n+1].............................................................................................65
4.2.5 0x60n1 PAI Samples Ch.[n+1] (24 Bit) ............................................................................66
4.2.6 0x60n2 PAI Samples Ch.[n+1] (16 Bit) ............................................................................66
4.2.7 0x60n3 PAI Samples Ch.[n+1] (REAL32) ........................................................................66
4.2.8 0x60n5 PAI Timestamp Ch.[n+1] .....................................................................................66
4.2.9 0x60n6 PAI Synchronous Oversampling Ch.[n+1]...........................................................67
4.2.10 0x70n0 PAI Control Ch.[n+1] ...........................................................................................67
4.2.11 0x80n0 PAI Settings Ch.[n+1]..........................................................................................67
4.2.12 0x80n1 PAI Filter 1 Settings Ch.[n+1]..............................................................................70
4.2.13 0x80n3 PAI Filter 2 Settings Ch.[n+1]..............................................................................70
4.2.14 0x80n6 PAI Scaler Settings Ch.[n+1]............................................................................... 70
4.2.15 0x80nA PAI Extended Settings Ch.[n+1] ........................................................................ 71
4.2.16 0x80nE PAI User Calibration Ch.[n+1]............................................................................. 71
4.2.17 0x80nF PAI Vendor Calibration Data Ch.[n+1] ................................................................ 72

Table of contents
EPP3504-00234 Version: 1.2
4.2.18 0x90n0 PAI Internal Data Ch.[n+1] .................................................................................. 73
4.2.19 0x90n2 PAI Info Data Ch.[n+1] ........................................................................................ 73
4.2.20 0x90nF PAI Calibration Dates Ch.[n+1] ........................................................................... 75
4.2.21 0xF000 Modular device profile.........................................................................................80
4.2.22 0xF008 Code word...........................................................................................................80
4.2.23 0xF009 Password Protection ...........................................................................................80
4.2.24 0xF010 Module list...........................................................................................................81
4.2.25 0xF083 BTN.....................................................................................................................81
4.2.26 0xF900 PAI Info Data.......................................................................................................81
4.2.27 0xF912 Filter info .............................................................................................................81
4.2.28 0xFB00 PAI Command ....................................................................................................82
4.2.29 0x80n0:01 PAI Settings.Interface.....................................................................................83
4.3 Sample programs............................................................................................................................84
4.3.1 Sample program 1 and 2 (offset/gain).............................................................................. 85
4.3.2 Sample program 3 (write LookUp table) .......................................................................... 91
4.3.3 Sample program 4 (generate LookUp table)....................................................................93
4.3.4 Sample program5(write filter coefficients)......................................................................94
4.3.5 Sample program 6 (interlacing of measured values) ....................................................... 97
4.3.6 Sample program 7 (general decimation in the PLC) ...................................................... 101
4.3.7 Sample program 8 (diagnosis messages)...................................................................... 106
4.3.8 Sample program 9 (measuring range combination).......................................................107
4.3.9 Sample program 10 (FB for real time diagnosis) ........................................................... 111
4.3.10 Sample program 11 (scripts for generation and transformation of filter coefficients)..... 114
4.3.11 Sample program 12 (R/W signature of calibration)........................................................114
4.3.12 Sample program13: Reading the BIC from the CoE.....................................................116
5 Features .................................................................................................................................................118
6 Commissioning on EtherCAT Master.................................................................................................. 119
6.1 General Commissioning Instructions for an EtherCAT Slave .......................................................119
6.2 TwinCAT Quick Start.....................................................................................................................127
6.2.1 TwinCAT 2 .....................................................................................................................129
6.2.2 TwinCAT 3 .....................................................................................................................139
6.3 TwinCAT Development Environment ............................................................................................152
6.3.1 Installation of the TwinCAT real-time driver ................................................................... 153
6.3.2 Notes regarding ESI device description ......................................................................... 159
6.3.3 TwinCAT ESI Updater....................................................................................................163
6.3.4 Distinction between Online and Offline .......................................................................... 163
6.3.5 OFFLINE configuration creation..................................................................................... 164
6.3.6 ONLINE configuration creation ...................................................................................... 169
6.3.7 EtherCAT subscriber configuration ................................................................................ 177
6.3.8 Import/Export of EtherCAT devices with SCI and XTI.................................................... 186
6.4 EtherCAT basics ...........................................................................................................................192
6.5 EtherCAT cabling – wire-bound ....................................................................................................192
6.6 General notes for setting the watchdog ........................................................................................193
6.7 EtherCAT State Machine ..............................................................................................................195
6.8 CoE Interface ................................................................................................................................197

Table of contents
EPP3504-0023 5Version: 1.2
6.9 Distributed Clock ...........................................................................................................................202
7 Mounting and wiring .............................................................................................................................203
7.1 Mounting .......................................................................................................................................203
7.1.1 Dimensions ....................................................................................................................203
7.1.2 Fixing.............................................................................................................................. 204
7.1.3 Functional earth (FE) ..................................................................................................... 205
7.1.4 Tightening torques for plug connectors..........................................................................206
7.2 Notes regarding connectors and wiring.........................................................................................207
7.3 Note - Power supply......................................................................................................................209
7.4 Notes on connection technology EPP3504-0023..........................................................................210
7.5 Connectors....................................................................................................................................211
7.6 Accessories...................................................................................................................................212
7.7 Power supply, potential groups .....................................................................................................213
7.8 Status LEDs ..................................................................................................................................215
7.8.1 RUN, Channel 1 ... Channel 4........................................................................................ 215
7.8.2 Supply voltage................................................................................................................ 216
7.8.3 EtherCAT .......................................................................................................................216
7.9 Conductor losses ..........................................................................................................................217
7.10 Disposal ........................................................................................................................................218
8 Appendix................................................................................................................................................219
8.1 Diagnostics - basic principles of diag messages........................................................................... 219
8.2 TcEventLogger and IO ..................................................................................................................226
8.3 EtherCAT AL Status Codes ..........................................................................................................230
8.4 Firmware Update EL/ES/EM/ELM/EPxxxx.................................................................................... 230
8.4.1 Device description ESI file/XML ..................................................................................... 232
8.4.2 Firmware explanation.....................................................................................................235
8.4.3 Updating controller firmware *.efw ................................................................................. 235
8.4.4 FPGA firmware *.rbf ....................................................................................................... 237
8.4.5 Simultaneous updating of several EtherCAT devices .................................................... 241
8.5 Firmware compatibility ..................................................................................................................242
8.6 Restoring the delivery state...........................................................................................................243
8.7 Notes on operation........................................................................................................................244
8.8 Continuative documentation for I/O components with analog in and outputs ............................... 245
8.9 Support and Service......................................................................................................................246
8.10 Reshipment and return..................................................................................................................246

Table of contents
EPP3504-00236 Version: 1.2

Foreword
EPP3504-0023 7Version: 1.2
1 Foreword
NOTE
Within this short documentation some chapters are only available in a shortened version. For the complete
documentation please contact the Beckhoff sales department responsible for you.
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
EPP3504-00238 Version: 1.2
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
EPP3504-0023 9Version: 1.2
1.3 Documentation Issue Status
Version Comment
1.2 • Subchapter “Product overview”/ “Similar products“ deleted
• Subchapter “Commissioning on EtherCAT Master“/ “General notes for setting the watchdog“
updated
• Subchapter “Notes on analog measured values“ within appendix deleted
• Subchapter “Continuative documentation for I/O components with analog in and outputs“
within appendix added
1.1 • Chapter “Product Overview“/ “Similar products“, subchapter “RTD/Resistance measurement“
added
• Updates/ complements within Appendix, Subchapter “Notes on analog measured values“
◦ Subchapter “Notes on analog specifications“ updated
◦ Subchapter “Theory of numbers of INT32, REAL32“ added
1.0 • First public version
Firmware and hardware versions
This documentation refers to the firmware and hardware version that was applicable at the time the
documentation was written.
The module features are continuously improved and developed further. Modules having earlier production
statuses cannot have the same properties as modules with the latest status. However, existing properties
are retained and are not changed, so that older modules can always be replaced with new ones.
The firmware and hardware version (delivery state) can be found in the batch number (D-number) printed on
the side of the EtherCAT Box.
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
Also see about this
2Firmware compatibility [}242]
1.4 Version identification of EtherCAT devices
1.4.1 General notes on marking
Designation
A Beckhoff EtherCAT device has a 14-digit designation, made up of
• family key
• type
• version
• revision

Foreword
EPP3504-002310 Version: 1.2
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.
1.4.2 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.1: BIC as data matrix code (DMC, code scheme ECC200)

Foreword
EPP3504-0023 11Version: 1.2
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:
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.2: Example DMC 1P072222SBTNk4p562d71KEL1809 Q1 51S678294

Foreword
EPP3504-002312 Version: 1.2
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.
NOTE
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.
1.4.3 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:

Foreword
EPP3504-0023 13Version: 1.2
◦ 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".
◦ From TwinCAT 3.1. build 4024.24 the functions FB_EcReadBIC and FB_EcReadBTN for reading
into the PLC and further eBIC auxiliary functions are available in the Tc2_EtherCAT Library from
v3.3.19.0.
• 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:
◦ 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 for
reading into the PLC and further eBIC auxiliary functions are available in the Tc2_EtherCAT
Library from v3.3.19.0.
• 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
Currently, no electronic storage and readout is planned for these devices.

Product group: EtherCATPBox modules
EPP3504-002314 Version: 1.2
2 Product group: EtherCATPBox modules
EtherCATP
EtherCATP supplements the EtherCAT technology with a process in which communication and supply
voltages are transmitted on a common line. All EtherCAT properties are retained with this process.
Two supply voltages are transmitted per EtherCATP line. The supply voltages are electrically isolated from
each other and can therefore be switched individually. The nominal supply voltage for both is 24VDC.
EtherCATP uses the same cable structure as EtherCAT: a 4-core Ethernet cable with M8 connectors. The
connectors are mechanically coded so that EtherCAT connectors and EtherCATP connectors cannot be
interchanged.
EtherCATP Box modules
EtherCATP Box modules are EtherCATP slaves with degree of protection IP67. They are designed for
operation in wet, dirty or dusty industrial environments.
EtherCAT basics
A detailed description of the EtherCAT system can be found in the EtherCAT system documentation.

Product overview
EPP3504-0023 15Version: 1.2
3 Product overview
NOTE
Documentation status of functions
The EPP3504‑0023 devices are in continuous development, both in terms of new devices and new
software functions. As a result, settings that can be found in delivered devices, e.g. in the CoE/PDO/DC
dialogs, may not yet be documented. The use of such non-documented properties is not permitted unless it
is done with the express supervision of Beckhoff Support.
3.1 EPP3504-0023 - Introduction
Fig.3: EPP3504-0023
4-channel measuring bridge,(SG) full/half/quarter bridge, 24 bit, 10 ksps
The EPP3504-0023 EtherCAT P Box is designed for the evaluation of measuring bridges in full-bridge, half-
bridge and quarter-bridge configuration. In addition, it supports the measuring ranges potentiometer, PT1000
(RTD) and ±10 V. It is derived from the ELM3504 EtherCAT Terminal and also features a sampling rate of
10,000 sps, internal switchable supplementary resistors and an integrated, parameterizable bridge supply.
It has the same technological features as the ELM3x0x Terminals, i.e. all parameters can be set via
EtherCAT using the CoE directory.
The EPP3504-0023 is designed for use close to the measurement site in a protected environment and is
therefore equipped with IP20 bridge connections.
Quick-Links
• IO configuration in TwinCAT
• Mounting and wiring [}203]
• Process data overview [}59]
• Connection view [}59]
• Object description and parameterization [}60]

Product overview
EPP3504-002316 Version: 1.2
3.2 EPP3504-0023 - Technical data
Technical data EPP3504-0023
Analog inputs 4 channel (differential)
Time relation between channels to each
other
Simultaneous conversion of all channels in the box,
synchronous conversion between devices, if
DistributedClocks will be used
ADC conversion method ΔΣ (Delta-Sigma) with internal sample rate
8 Msps
Cutoff frequency input filtering hardware
(see explanations within chapter Features/
Firmware filter concept [}118])
Before AD converter:
Hardware low pass -3dB @ 30 kHz
type butterworth 3th order
Within ADC after conversion:
Low pass
-3dB @ 2.6 kHz, ramp-up time 300µs
type sinc3/average filter
The ramp-up time/ settling time/ delay caused by the filtering
will be considered within the DistributedClocks-Timestamp.
Resolution 24 bit (including sign)
Connection technology 2/3/4/5/6-wire
Sampling rate (per channel, simultaneous) 100 µs/10 ksps
Free down sampling by Firmware via decimation factor
Oversampling 1…100 selectable
Supported EtherCAT cycle time
(depending on the operation mode)
DistributedClocks: min.100µs, max.10ms
FrameTriggered/Synchron: min.200µs, max.100ms
FreeRun: not yet supported
Connection diagnosis Wire break/short cut
Internal analog groundAGND Existing by external connection to -Uv
Overvoltage protection of the inputs related
to ‑Uv (internal ground)
Value to follow
Internal power supply Via EtherCAT P
Nominal voltage US24 V DC (-15 %/+20 %)
Current consumption from UStyp. 150 mA
Nominal voltage UP24 V DC (-15 %/+20 %)
Current consumption from UPNo (diagnosis LED only, sensors will be supplied by US)
Thermal power dissipation typ. 3 W
Dielectric strength - destruction limit max. permitted short-term/permanent voltage between the
contact points ±I1, ±I2, +Uv and –Uv: non-supplied ±40V,
supplied ±36V
Note: -Uv corresponds to internal AGND
Recommended operation voltage range to
compliance with specification
Max. permitted voltage during specified normal operation
between ±I1 And ±I2: typ. ±10V against –Uv
Note: -Uv corresponds to internal AGND
Common data EPP3504-0023
Distributed Clocks Yes, with Oversampling n = 1…100, accuracy <<1μs
Special features Extended range 107 %, freely configurable numeric filters,
TrueRMS, integrator/differentiator, non-linear scaling,
PeakHold
Functional diagnosis 1) Yes
Electrical isolation channel/channel 2) -
Electrical isolation channel/EtherCAT 2) Functional insulation, 707 V DC (type test)

Product overview
EPP3504-0023 17Version: 1.2
Common data EPP3504-0023
Electrical isolation channel/SGND 2) Functional insulation, 707 V DC (type test)
Configuration Via the EtherCAT Master, e.g. TwinCAT
Note to cable length Signal cable lengths to the sensor / encoder over 3 m must be
shielded, the shield design must be in line with the state of the
art and be effective. For larger cable lengths >30 m a suitable
surge protection should be provided if appropriate
interference could affect the Signal cable.
1) see chapters Self-test and self-test report and Connection test/switchable connection diagnostics
2) see notes to potential groups within chapter Power supply, potential groups
Basic mechanical
properties
EPP3504-0023
Connection type Push-In spring-loaded terminal PC FMC1.5
6‑pin, RM2.54mm
Pluggable, 25 mating cycles
Dimensions (W x H x D) See chapter “Mounting and wiring”/ “Mounting”/
“Dimensions” [}203]
Mounting Directly on metallic, earthed structure screwed
Note mounting Plug partly not within scope of delivery, see chapter
Notes on connection technology EPP3504-0023 [}210]
Weight approx. 250g
Permissible ambient temperature range
during operation
0…+55 °C
Permissible ambient temperature range
during storage
-25…+85 °C
Environmental data EPP3504-0023
Permissible operating altitude range 0 up to 2000 m (derating at higher altitudes on request)
Relative humidity max. 95%, no condensation
Protection class IP 20 (because of plug connectors)
Normative data EPP3504-0023
Vibration-/shock resistance Conforms to EN 60068-2-6 / EN 60068-2-27
EMC-resistance / emission Conforms to EN 61000-6-2 / EN 61000-6-4
Approvals/ markings *)CE, UKCA, EAC
EMC notes In case of push-in connectors, ESD air discharges conforming
to EN 61000-6-4 into the connectors or to the lines connected
there can lead to measurement deviations up to ±FSV within
the respective channel or to other channels by crosstalk.
Peak voltages (surge) conforming to EN 61000-6-2 that are
applied to the cable shield can lead to measurement
deviations up to ±FSV.
*) Real applicable approvals/markings see type plate on the side (product marking).

Product overview
EPP3504-002318 Version: 1.2
3.2.1 EPP3504-0023 overview measurement ranges
Measurement Connection tech-
nology
FSV Mode Maximum value/ value
range
Voltage 2 wire ±10 V Extended ±10.737.. V
Legacy ±10 V
±80 mV Extended ±85.9.. mV
Legacy ±80 mV
PT1000 2/3/4 wire 2000Ω Legacy 266 °C
Potentiometer 3/5 wire ±1 V/V Extended ±1 V/V
Legacy
Full bridge 4/6‑wire ±32 mV/V Extended ±34.359.. mV/V
Legacy ±32 mV/V
±8 mV/V Extended ±8.5899.. mV/V
Legacy ±8 mV/V
±4 mV/V Extended ±4.2949.. mV/V
Legacy ±4 mV/V
±2 mV/V Extended ±2.1474.. mV/V
Legacy ±2 mV/V
±4 mV/V comp. Extended ±4.2949.. mV/V
Legacy ±4 mV/V
±2 mV/V comp. Extended ±2.1474.. mV/V
Legacy ±2 mV/V
Half bridge 3/5‑wire ±16 mV/V Extended ±17.179.. mV/V
Legacy ±16 mV/V
±8 mV/V Extended ±8.5899.. mV/V
Legacy ±8 mV/V
±4 mV/V Extended ±4.2949.. mV/V
Legacy ±4 mV/V
±2 mV/V Extended ±2.1474.. mV/V
Legacy ±2 mV/V
±4 mV/V comp. Extended ±4.2949.. mV/V
Legacy ±4 mV/V
±2 mV/V comp. Extended ±2.1474.. mV/V
Legacy ±2 mV/V
Quarter bridge
120/350/1000Ω
2/3 wire ±32 mV/V Extended ±34.359.. mV/V
Legacy ±32 mV/V
±8 mV/V Extended ±8.5899.. mV/V
Legacy ±8 mV/V
±4 mV/V Extended ±4.2949.. mV/V
Legacy ±4 mV/V
±2 mV/V Extended ±2.1474.. mV/V
Legacy ±2 mV/V

Product overview
EPP3504-0023 19Version: 1.2
Fig.4: Overview measurement ranges, Bipolar
Fig.5: Overview measurement ranges, Unipolar
Note: In Extended Range Mode the Underrange/Overrange display in the PDO status has the character of an information/warning
when the nominal measuring range is exceeded, i.e. no Error is displayed in the PDO status and LED. If the technical measuring range
is also exceeded, Error = TRUE is also displayed. The detection limit for Underrange/Overrange Error can be set in the CoE.
In Legacy Range mode, an Underrange/Overrange event also leads to an Error in the PDO status.

Product overview
EPP3504-002320 Version: 1.2
3.2.2 Measurement ±10 V
Measurement mode ±10 V
Measuring range, nominal -10…+10V
Measuring range, end value (FSV) 10 V
Measuring range, technically usable -10.737…+10.737V
PDO resolution (including sign) 24 bit 16 bit 2)
PDO LSB (Extended Range) 1.28µV 327.68 µV
PDO LSB (Legacy Range) 1.192.. µV 305.18.. µV
Input impedance ±Input 1
(internal resistance)
Differential typ. (tbd) || (tbd)
CommonMode typ. (tbd) against SGND
2) The analog measurement is always done with 24 bits, in 16-bit mode the eight least significant bits are cut
off. For further information see chapter “Commissioning”/ “Process data overview” [}59]
Preliminary specifications:
Measurement mode ±10 V
Basic accuracy: Measuring deviation at 23°C, with
averaging
< ±0.03 %, < ±300.0 ppmFSV typ.
< ±3.0 mV typ.
Offset/Zero point deviation
(at 23°C)
EOffset < 60.0 ppmFSV
Gain/scale/amplification
deviation (at 23°C)
EGain < 280.0 ppm
Non-linearity over the whole
measuring range
ELin < 80.0 ppmFSV
Repeatability ERep < 40.0 ppmFSV
Temperature coefficient TcGain < 10.0 ppm/K typ.
TcOffset < 4.0 ppmFSV/K typ.
< 40.0 µV/K typ.
Largest short-term deviation during a specified
electrical interference test
±0.06% = 600.0 ppmFSV typ.
Common-mode rejection ratio (without filter) DC: >115dB typ. 50 Hz: >105dB
typ.
1 kHz: >80dB
typ.
Common-mode rejection ratio (with 50 Hz FIR
filter)
DC: >115dB typ. 50 Hz: >115dB
typ.
1 kHz: >115dB
typ.
Noise (without filtering) ENoise, PtP < 60.0 ppmFSV < 469 digits < 0.6 mV
ENoise, RMS < 10.0 ppmFSV < 78 digits < 100.0 µV
Max. SNR > 100 dB
Noisedensity@1kHz
< 1.41
Noise (with 50 Hz FIR filter) ENoise, PtP < 9.0 ppmFSV < 70 digits < 90.0 µV
ENoise, RMS < 1.5 ppmFSV < 12 digits < 15.0 µV
Max. SNR > 116.5 dB