Beckhoff CX8110 User manual

Manual | EN
CX8110
Embedded PC with EtherCAT
8/11/2021 | Version: 1.4

Table of contents
CX8110 3Version: 1.4
Table of contents
1 Notes on the documentation ....................................................................................................................5
1.1 Representation and structure of warnings.........................................................................................6
1.2 Documentation Issue Status..............................................................................................................7
2 For your safety...........................................................................................................................................8
2.1 Intended use......................................................................................................................................8
2.2 Staff qualification ...............................................................................................................................8
2.3 Safety instructions .............................................................................................................................8
3 Transport and storage.............................................................................................................................10
4 Product overview.....................................................................................................................................11
4.1 Structure ..........................................................................................................................................13
4.2 Name plate ......................................................................................................................................14
4.3 Ethernet interfaces ..........................................................................................................................15
4.4 MicroSD card...................................................................................................................................18
4.5 Reset button ....................................................................................................................................18
5 Commissioning........................................................................................................................................19
5.1 Mounting..........................................................................................................................................19
5.1.1 Dimensions ...................................................................................................................... 19
5.1.2 Note the permissible installation positions....................................................................... 20
5.1.3 Securing on mounting rail ................................................................................................ 22
5.2 Connecting the power supply ..........................................................................................................23
6 Configuration ...........................................................................................................................................25
6.1 Operating system ............................................................................................................................25
6.1.1 Features included ............................................................................................................ 26
6.1.2 Update image .................................................................................................................. 27
6.1.3 FTP Server ...................................................................................................................... 28
6.2 DIP switch........................................................................................................................................30
6.3 IP address .......................................................................................................................................31
6.3.1 Setting in the operating system ....................................................................................... 31
6.4 Web service.....................................................................................................................................32
6.4.1 Starting the Beckhoff Device Manager ............................................................................ 32
6.4.2 Enabling a remote display ............................................................................................... 33
6.4.3 Starting a remote connection........................................................................................... 34
6.5 TwinCAT..........................................................................................................................................35
6.5.1 Connecting to the CX81xx ............................................................................................... 35
6.5.2 Scanning for devices ....................................................................................................... 37
6.5.3 Creating process data...................................................................................................... 38
6.5.4 Creating a PLC project .................................................................................................... 40
6.5.5 Linking variables .............................................................................................................. 42
6.5.6 Using Explicit Device Identification .................................................................................. 43
6.6 Distributed Clocks (DC) ...................................................................................................................44
6.6.1 Enabling distributed clocks .............................................................................................. 45
6.6.2 Configuring the lower master........................................................................................... 46
6.6.3 Diagnostics on the slave side .......................................................................................... 47

Table of contents
CX81104 Version: 1.4
6.6.4 Configuring the upper master .......................................................................................... 48
7 Programming ...........................................................................................................................................49
7.1 1-second UPS (persistent variables) ...............................................................................................49
7.1.1 FB_S_UPS_CX81xx........................................................................................................ 51
7.1.2 Data types........................................................................................................................ 53
7.1.3 PlcAppSystemInfo ........................................................................................................... 53
7.2 Function F_CX81xx_ADDRESS......................................................................................................54
7.3 Real Time Clock (RTC)....................................................................................................................54
8 Ethernet X001 Interface...........................................................................................................................56
8.1 Ethernet ...........................................................................................................................................56
8.2 Topology example ...........................................................................................................................58
8.3 ADS-Communication .......................................................................................................................58
9 Error handling and diagnosis.................................................................................................................60
9.1 Diagnostic LEDs ..............................................................................................................................60
9.2 K-bus ...............................................................................................................................................60
9.3 E-bus ...............................................................................................................................................63
10 Care and maintenance ............................................................................................................................64
10.1 Replace the battery .........................................................................................................................64
11 Technical data..........................................................................................................................................65
12 Appendix ..................................................................................................................................................67
12.1 Accessories .....................................................................................................................................67
12.2 Certifications....................................................................................................................................68
12.3 Support and Service ........................................................................................................................69

Notes on the documentation
CX8110 5Version: 1.4
1 Notes on the documentation
This description is only intended for the use of trained specialists in control and automation engineering who
are familiar with applicable national standards.
It is essential that the documentation and the following notes and explanations are followed when installing
and commissioning the 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 a 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.

Notes on the documentation
CX81106 Version: 1.4
1.1 Representation and structure of warnings
The following warnings are used in the documentation. Read and follow the warnings.
Warnings relating to personal injury:
DANGER
Hazard with high risk of death or serious injury.
WARNING
Hazard with medium risk of death or serious injury.
CAUTION
There is a low-risk hazard that can result in minor injury.
Warnings relating to damage to property or the environment:
NOTE
There is a potential hazard to the environment and equipment.
Notes showing further information or tips:
This notice provides important information that will be of assistance in dealing with the product or
software. There is no immediate danger to product, people or environment.

Notes on the documentation
CX8110 7Version: 1.4
1.2 Documentation Issue Status
Version Comment
1.0 First version.
1.1 Chapter “Connecting the power supply” revised.
1.2 Chapter “Technical data” revised.
1.3 Chapter “Device Manager” revised.
1.4 Chapter “1-second UPS” revised.

For your safety
CX81108 Version: 1.4
2 For your safety
Read the chapter on safety and follow the instructions in order to protect from personal injury and damage to
equipment.
Limitation of liability
All the components are supplied in particular hardware and software configurations appropriate for the
application. Unauthorized modifications and changes to the hardware or software configuration, which go
beyond the documented options, are prohibited and nullify the liability of Beckhoff Automation GmbH & Co.
KG.
In addition, the following actions are excluded from the liability of Beckhoff Automation GmbH & Co. KG:
• Failure to comply with this documentation.
• Improper use.
• Use of untrained personnel.
• Use of unauthorized replacement parts.
2.1 Intended use
The Embedded PC is a control system and is intended for mounting on a DIN rail in a control cabinet or
terminal box. The Embedded PC series is used in conjunction with Bus Terminals for recording digital or
analog signals from sensors and transferring them to actuators or higher-level controllers.
The Embedded PC is designed for a working environment that meets the requirements of protection class
IP20. This involves finger protection and protection against solid foreign objects up to 12.5 mm, but not
protection against water. Operation of the devices in wet and dusty environments is not permitted, unless
specified otherwise. The specified limits for electrical and technical data must be adhered to.
Improper use
The Embedded PC is not suitable for operation in the following areas:
• Potentially explosive atmospheres.
• Areas with an aggressive environment, e.g. aggressive gases or chemicals.
• Living areas. If the devices are to be used in living areas, the relevant standards and guidelines for
interference emissions must be adhered to, and the devices must be installed in housings or control
boxes with suitable shielding.
2.2 Staff qualification
All operations involving Beckhoff software and hardware may only be carried out by qualified personnel with
knowledge of control and automation engineering. The qualified personnel must have knowledge of the
administration of the Industrial PC and the associated network.
All interventions must be carried out with knowledge of control programming, and the qualified personnel
must be familiar with the current standards and guidelines for the automation environment.
2.3 Safety instructions
The following safety instructions must be followed during installation and working with networks and the
software.
Mounting
• Never work on live equipment. Always switch off the power supply for the device before installation,
troubleshooting or maintenance. Protect the device against unintentional switching on.

For your safety
CX8110 9Version: 1.4
• Observe the relevant accident prevention regulations for your machine (e.g. the BGV A 3, electrical
systems and equipment).
• Ensure standard-compliant connection and avoid risks to personnel. Ensure that data and supply
cables are laid in a standard-compliant manner and ensure correct pin assignment.
• Observe the relevant EMC guidelines for your application.
• Avoid polarity reversal of the data and supply cables, as this may cause damage to the equipment.
• The devices contain electronic components, which may be destroyed by electrostatic discharge when
touched. Observe the safety precautions against electrostatic discharge according to DIN EN
61340-5-1/-3.
Working with networks
• Restrict access to all devices to an authorized circle of persons.
• Change the default passwords to reduce the risk of unauthorized access.
• Protect the devices with a firewall.
• Apply the IT security precautions according to IEC 62443, in order to limit access to and control of
devices and networks.
Working with the software
• The sensitivity of a PC against malicious software increases with the number of installed and active
software.
• Uninstall or disable unnecessary software.
Further information about the safe handling of networks and software can be found in the Beckhoff
Information System:
http://infosys.beckhoff.com
Document name
IPC Security Guideline

Transport and storage
CX811010 Version: 1.4
3 Transport and storage
Transport
NOTE
Short circuit due to moisture
Moisture can form during transport in cold weather or in the event of large temperature fluctuations.
Avoid moisture formation (condensation) in the Embedded PC, and leave it to adjust to room temperature
slowly. If condensation has occurred, wait at least 12 hours before switching on the Embedded PC.
Despite the robust design of the unit, the components are sensitive to strong vibrations and impacts. During
transport the Embedded PC must be protected from
• mechanical stress and
• use the original packaging.
Table1: Dimensions and weight of the CX8110 Embedded PC.
CX8110
Dimensions (W x H x D) 71 mm x 100 mm x 73 mm
Weight approx. 230 g
Storage
• Remove the battery from the Embedded PC if storage temperatures exceed 60°C. The battery should
be stored separate from the Embedded PC in a dry environment at a temperature between 0°C and
30°C.
The preset date and time are lost if the battery is removed.

Product overview
CX8110 11Version: 1.4
4 Product overview
CX8100 designates a product family of Embedded PCs based on a 32-bit ARM CPU. The CX8100
Embedded PC is programmable and is able to execute its own control program. In addition to that the
Embedded PC acts as a slave device of a higher-level fieldbus system.
The CX8100 Embedded PC has the following basic configuration:
• a 512MB MicroSD card,
• an Ethernet interface
• as well as two switched Ethernet interfaces (2 x RJ45, switched).
You can use the CX8100 Embedded PCs as decentralized controllers and in this way ensure that the local
program continues to be executed on the CX8100 in the event of an interruption in the higher-level fieldbus
system.
The operating system is Microsoft Windows Embedded Compact 7. Because there is no monitor port, the
operating system and its "virtual" display can only be accessed via the network. Beckhoff Device Manager
and Remote Display (Cerhost)
The Embedded PC features an internal 1-second UPS as persistent data memory. The 1-second UPS
enables persistent data to be saved to the MicroSD card in the event of a power failure.
Power supply terminal
The power supply terminal for the Embedded PC is located on the right-hand side. Bus Terminals (K-bus) or
EtherCAT Terminals (E-bus) can be attached on the right-hand side of the power supply terminal. The power
supply terminal automatically recognizes the respective bus system (K-bus or E-bus).
The use of EtherCAT Terminals (E-bus) enables further options, such as the implementation of different
topologies, the integration of further bus systems such as CANopen, PROFIBUS and PROFINET and – with
the EtherCAT Box Modules – connection to the IP67 world.
Fieldbus interface
CX8100 devices are being prepared for further fieldbus systems such as EtherCAT (slave), PROFINET,
EtherNet/IP, CANopen, PROFIBUS and other communication systems.
Available fieldbus systems:
•CX8110: EtherCAT
•CX8180: RS232/485
•CX8190: Ethernet (Realtime Ethernet, ADS UDP, ADS TCP, EAP, Web Services)
•CX8191: BACnet (client and server)
Programming
The CX8100 Embedded PCs are programmed according to the high-performance IEC61131-3 standard.
The TwinCAT 3 automation software forms the basis for the programming of the Embedded PC.
Configuration
The CX8100 Embedded PC is commissioned via the Ethernet interface. The fieldbus interface and all
connected devices such as EtherCAT Terminals or Bus Terminals are then read out via TwinCAT 3. The
configuration is stored on the Embedded PC after the parameterization. The configuration thus created can
be accessed again later.
The shortest usable task time is 500µs, although this is only achievable with a very small system load. A
task time of 1 to 50ms is recommended for the I/O data. Other tasks can also be set slower. When using
shorter cycle times, the total system load is to be observed.

Product overview
CX811012 Version: 1.4
If too short a cycle time is selected, the Web visualization and Remote Display may operate very slowly or
cause timeouts. The user is responsible for configuring his system such that it is not overloaded.

Product overview
CX8110 13Version: 1.4
4.1 Structure
1
2
7
4
8
10
11
12
14
3
13
15
5
69
10
Fig.1: Sample configuration of a CX8110 Embedded PC.
Table2: Legend for the configuration.
No. Component Description
1DIP switch [}30] (S101). The DIP switches can be used to define the Explicit Device
Identification for the EtherCAT slave interfaces (X101, X102).
2Battery compartment
[}64] (under the front
flap).
Power supply for the battery-backed clock for time and date.
3MicroSD card slot [}18]
(under the front flap).
Slot for industrial MicroSD cards.
4EtherCAT slave interfaces
RJ45 [}15] (X101, X102).
EtherCAT In and EtherCAT Out for connection to an EtherCAT
master.
5Reset button [}18] This switches the Embedded PC to Config mode.
6Diagnostic LEDs [}60].Diagnostic LEDs. You can create your own diagnostic messages
for the WD and ERR diagnostic LEDs (see: Controlling CX8190
LEDs).
7Ethernet interface [}15]
(X001).
Interface for commissioning and programming the Embedded PC.
8Diagnostic LEDs, power
supply terminal [}60].
Diagnosis of the power supply for the Embedded PC and the
terminal bus. Status of the E-bus and K-bus communication.
9 Spring-loaded terminals,
+24V and 0V
Power supply for Embedded PC.
10 Terminal bus (K-bus or E-
bus)
Interface for EtherCAT Terminals or Bus Terminals. Data exchange
and supply.
11 Spring-loaded terminal,
+24V
Power supply for Bus Terminals via power contact.
12 Spring-loaded terminal, 0V Power supply for Bus Terminals via power contact.
13 Terminal release Releases the power supply terminal and therefore the Embedded
PC from the mounting rail.
14 Spring-loaded terminal, PE Spring-loaded terminal for power contact PE.
15 Power contacts, +24V,
0V, PE
Power contacts for Bus Terminals.

Product overview
CX811014 Version: 1.4
4.2 Name plate
The CX8110 Embedded PC features a name plate on the left-hand side of the housing.
1
2
5
3
4
6
Fig.2: CX8110 name plate.
Table3: Legend for the name plate.
No. Description
1 Information on the power supply unit. 24VDC, 4A max.
2 MAC address of the Ethernet interface X001.
By default, the host name is formed from CX plus the last 3 bytes of the MAC address:
for example, the MAC address: 00-01-05-aa-bb-cc results in the host name CX-aabbcc.
3 Information on:
• serial number,
• hardware version
• and date of manufacture.
4 Information on the model. The last two numbers code the version of the Embedded PC.
5 Vendor data including address.
6 CE conformity.

Product overview
CX8110 15Version: 1.4
4.3 Ethernet interfaces
You can program and commission the CX8110 Embedded PC via the X001 Ethernet interface. The Ethernet
interface achieves speeds of 10/100Mbit/s.
Fig.3: Ethernet interface X001, X101, X102.
The LEDs on the left of the interface indicate the connection status. The upper LED (LINK/ACT) indicates
whether the interface is connected to a network. If this is the case, the LED lights up green. The LED flashes
when data transfer on the interface is in progress.
The lower LED (SPEED) indicates the connection speed. The LED is not lit if the speed is 10Mbit/s. At
100Mbit/s the LED lights up orange.
Table4: Ethernet interface X001, pin assignment.
PIN Signal Description
1 TD + Transmit +
2 TD - Transmit -
3 RD + Receive +
4 connected reserved
5
6 RD - Receive -
7 connected reserved
8
EtherCAT slave interfaces X101 and X102
Both EtherCAT slave interfaces are switched and interdependent. Both interfaces reach speeds of up to
100Mbit/s.
Table5: EtherCAT slave interface X101 and X102, PIN assignment.
PIN Signal Description
1 TD + Transmit +
2 TD - Transmit -
3 RD + Receive +
4 connected reserved
5
6 RD - Receive -
7 connected reserved
8

Product overview
CX811016 Version: 1.4
Transmission standards
10Base5
The transmission medium for 10Base5 consists of a thick coaxial cable ("yellow cable") with a max. data
transfer rate of 10Mbaud arranged in a line topology with branches (drops) each of which is connected to
one network device. Because all the devices are in this case connected to a common transmission medium,
it is inevitable that collisions occur often in 10Base5.
10Base2
10Base2 (Cheaper net) is a further development of 10Base5, and has the advantage that the coaxial cable is
cheaper and, being more flexible, is easier to lay. It is possible for several devices to be connected to one
10Base2 cable. It is frequent for branches from a 10Base5 backbone to be implemented in 10Base2.
10BaseT
Describes a twisted pair cable for 10Mbaud. The network here is constructed as a star. It is no longer the
case that every device is attached to the same medium. This means that a broken cable no longer results in
failure of the entire network. The use of switches as star couplers enables collisions to be reduced. Using
full-duplex connections they can even be entirely avoided.
100BaseT
Twisted pair cable for 100Mbaud. It is necessary to use a higher cable quality and to employ appropriate
hubs or switches in order to achieve the higher data rate.
10BaseF
The 10BaseF standard describes several optical fiber versions.
Short description of the 10BaseT and 100BaseT cable types
Twisted-pair copper cable for star topologies, where the distance between two devices may not exceed
100meters.
UTP
Unshielded twisted-pair
This type of cable belongs to category 3, and is not recommended for use in an industrial environment.
S/UTP
Screened/unshielded twisted-pair (shielded with copper braid)
Has an overall shield of copper braid to reduce influence of external interference. This cable is
recommended for use with Bus Couplers.
FTP
Foiled shielded twisted-pair (shielded with aluminum foil)
This cable has an outer shield of laminated aluminum and plastic foil.
S/FTP
Screened/foiled shielded twisted-pair (shielded with copper braid and aluminum foil)
Has a laminated aluminum shield with a copper braid on top. Such cables can provide up to 70dB reduction
in interference power.

Product overview
CX8110 17Version: 1.4
STP
Shielded twisted-pair
Describes a cable with overall shielding without further specification of the type of shielding.
S/STP
Screened/shielded twisted-pair (wires are individually shielded)
This identification refers to a cable with a shield for each of the two wires as well as an outer shield.
ITP
Industrial Twisted-Pair
The structure is similar to that of S/STP, but, in contrast to S/STP, it has only two pairs of conductors.

Product overview
CX811018 Version: 1.4
4.4 MicroSD card
The basic equipment of the CX8110 includes a 512MB MicroSD card. You can optionally order the
Embedded PC with a larger MicroSD card (1GB, 2GB, 4GB or 8GB).
The cards employed are SLC memory with extended temperature range for industrial applications. Use
exclusively MicroSD cards approved by Beckhoff.
Order designation Capacity Description
CX1900-0123 1GB MicroSD card (SLC memory) with
extended temperature range for
industrial applications instead of
the 512MB card (ordering option)
CX1900-0125 2GB
CX1900-0127 4GB
CX1900-0129 8GB
Order designation Capacity Description
CX1900-0122 512MB MicroSD card (SLC memory) with
extended temperature range for
industrial applications as spare
part.
CX1900-0124 1GB
CX1900-0126 2GB
CX1900-0128 4GB
CX1900-0130 8GB
4.5 Reset button
Use the Reset button to activate Config mode. You can use this function if the PLC program unexpectedly
causes an error. To do this, keep the Reset button pressed during the restart for an extended period.
Activate Config mode as follows:
1. Open the front flap.
2. Switch off the Embedded PC.
3. Start the Embedded PC and keep the Reset button pressed until the ERR LED turns red and then
yellow.
ðThe CX81xx Embedded PC is put into Config mode.

Commissioning
CX8110 19Version: 1.4
5 Commissioning
5.1 Mounting
5.1.1 Dimensions
X101
X102
S101
1 2 3456 87 9 10
TC
WD
ERR
CX8110
24V 0V
+ +
- -
PE PE
22 mm 45 mm
100 mm
68 mm
71 mm
73 mm
X001
Fig.4: Dimensions of the CX81xx Embedded PC.
Technical drawings in DWG and STP formats can be found at:
http://www.beckhoff.com

Commissioning
CX811020 Version: 1.4
5.1.2 Note the permissible installation positions
Increased heat generation
The Embedded PC may overheat if the installation position is incorrect or the minimum distances
are not adhered to.
Ensure adequate ventilation. A horizontal installation position is ideal. Leave at least 30 mm clear-
ance above and below the Embedded PC.
Note the following specifications for the control cabinet:
• Keep to the prescribed ambient temperature. Measure the temperature below the Embedded PC at a
distance of 30mm to the cooling fins, in order to determine the ambient temperature correctly.
• Adhere to the minimum distances of 30mm above and below the Embedded PCs.
• Additional electrical equipment affects the heat generation in the control cabinet. Select a suitable
control cabinet enclosure depending on the application, or ensure that excess heat is dissipated from
the control cabinet.
Prescribed installation position for temperatures up to 60°C
Install the Embedded PC horizontally in the control cabinet on a mounting rail, in order to ensure optimum
heat dissipation.
Ventilation openings are located at the top and bottom of the housing. This ensures an optimum airflow
through the Embedded PC in vertical direction. In addition, a minimum clearance of 30mm above and below
the Embedded PCs is required, in order to ensure adequate ventilation.
min. 30 mm
24V 0V
PE
+
-
PE
-
+
BECKHOFF
KL 9010
24V 0V
PE
-
PE
-
BECKHOFF
KL 2134
+ +
24V 0V
PE
- -
+
BECKHOFF
KL 1002
+
PEPE
min. 30 mm
24V 0V
PE
+
-
PE
-
+
BECKHOFF
KL 9010
24V 0V
PE
-
PE
-
BECKHOFF
KL 2134
+ +
24V 0V
PE
- -
+
BECKHOFF
KL 1002
+
PEPE
min. 30 mm min. 30 mm
X101
X102
S101
1 2 3456 8
7910
TC
WD
ERR
CX8110
24V 0V
+ +
- -
PE PE
X001
Fig.5: Embedded PC CX8110, horizontal installation position.