Beijer Electronics X2 extreme 15 SL HP User manual

X2 extreme 15 SL HP
English
MAEN263, 2020-01

Foreword
Installation manual for X2 extreme 15 SL HP
Foreword
All operator panels are developed to satisfy the demands of human-machine
communication. Built-in functions such as displaying and controlling text,
dynamic indication, time channels, alarm and recipe handling are included.
The operator panel works primarily in an object-oriented way, making it easy to
understand and use. Configuration is carried out on a PC using iX Developer
software. The project can then be transferred and stored in the operator panel
itself.
Various types of automation equipment such as PLCs, servos or drives can be
connected to the operator panels. In this manual, the term “the controller” refers
to the connected equipment.
This manual explains how to install the operator panel. Please refer to the
iX Developer reference manual for further information.
Order no: MAEN263
Copyright © 2020-01 Beijer Electronics AB. All rights reserved.
The information in this document is subject to changewithoutnoticeandisprovidedasavailableatthe
time of printing. Beijer Electronics AB, including all its group companies, reserves the right to change any
information without updating this publication. Beijer Electronics AB, including all its group companies,
assumesnoresponsibilityforanyerrorsthatmayappearinthisdocument. Readtheentireinstallation
manual prior to installing and using this equipment. Only qualified personnel may install, operate or repair
this equipment. Beijer Electronics AB, including all its group companies, are not responsible for modified,
altered or renovated equipment. Because the equipment has a wide range of applications, users must acquire
the appropriate knowledge to use the equipment properly in their specific applications. Persons responsible
for the application and the equipment must themselves ensure that each application is in compliance with
all relevant requirements, standards and legislationinrespecttoconfigurationandsafety. Onlypartsand
accessories manufactured according to specifications set by Beijer Electronics AB, including all its group
companies, may be used.
BEIJER ELECTRONICS AB, INCLUDING ALL ITS GROUP
COMPANIES, SHALL NOT BE LIABLE TO ANYONE FOR ANY
DIRECT, INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL
DAMAGES RESULTING FROM THE INSTALLATION, USE OR
REPAIR OF THIS EQUIPMENT, WHETHER ARISING IN TORT,
CONTRACT, OR OTHERWISE. BUYER'S SOLE REMEDY SHALL
BE THE REPAIR, REPLACEMENT, OR REFUND OF PURCHASE
PRICE, AND THE CHOICE OF THE APPLICABLE REMEDY SHALL
BE AT THE SOLE DISCRETION OF BEIJER ELECTRONICS AB,
INCLUDING ALL ITS GROUP COMPANIES.
Beijer Electronics, MAEN263

Contents
Contents
1 SafetyPrecautions ....................................................... 4
1.1 General ........................................................... 4
1.2 Hazardous Materials ............................................. 4
1.3 DisposalRequirementsUnderWEEERegulations ........... 5
1.4 UL and cUL Installation ......................................... 5
1.5 IECEx/ATEX Certificate and Dust Rating .................... 6
1.6 ConditionsofSafeUseforZone2/22ATEX/IECEx .......... 6
1.7 DuringInstallation .............................................. 6
1.8 DuringUse ....................................................... 6
1.9 Service and Maintenance ........................................ 7
1.10 Dismantling and Scrapping ..................................... 7
1.11 Appearance of Air in Touch Screen ............................. 7
2 NamingConvention .................................................... 8
3 Installation ............................................................... 9
3.1 InstallationProcess .............................................. 9
3.1.1 ProtectiveConnectorShieldInstallationProcess ...............11
3.1.2 ConnectionstotheController ..................................13
3.1.3 OtherConnectionsandPeripherals .............................13
4 TechnicalData ........................................................... 14
5 ChemicalResistance .................................................... 16
5.1 MetalCasing ..................................................... 16
5.2 Touch Screen and Overlay Material ............................ 16
5.2.1 ProtectiveFilm ...................................................16
5.2.2 TouchScreenSurface ............................................18
5.2.3 TouchScreenProtector ..........................................18
6 OperatorPanelDrawings .............................................. 19
6.1 Connectors ....................................................... 19
6.1.1 CommunicationPorts ...........................................19
6.1.2 PowerSupply ....................................................20
6.1.3 COMA ..........................................................20
6.1.4 USB1/2 ..........................................................21
6.1.5 LANA/LANB ..................................................21
6.1.6 COMB ..........................................................21
6.2 Connectors ....................................................... 21
6.3 X2 extreme 15 SL HP Outline .................................. 22
7 Additional InstallationTips ............................................ 23
7.1 Grounding the operatorpanel .................................. 23
7.2 To Achieve Better EMCProtection ............................. 23
7.3 Safety ............................................................. 27
7.4 Galvanic Isolation ................................................ 28
7.5 Cable and Bus Termination RS-485 ............................ 30
Beijer Electronics, MAEN263

Safety Precautions
1SafetyPrecautions
Both the installer and the owner and/or operator of the operator panel must read
and understand this installation manual.
1.1 General
•Read the safety precautions carefully.
•Check the delivery for transportation damage. If damage is found, notify the
supplier as soon as possible.
•Do not use the operator panel in an environment with high explosive hazards.
•The supplier is not responsible for modified, altered or reconstructed
equipment.
•Use only parts and accessories manufactured according to specifications of
the supplier.
•Read the installation and operating instructions carefully before installing,
using or repairing the operator panel.
•Neverallowfluids,metalfilingsorwiringdebristoenteranyopeningsinthe
operator panel. This may cause fire or electrical shock.
•Only qualified personnel may operate the operator panel.
•Storing the operator panel where the temperature is lower/higher than
recommended in this manual can cause the LCD display liquid to
congeal/become isotropic.
•The LCD display liquid contains a powerful irritant. In case of skin contact,
wash immediately with plenty of water. In case of eye contact, hold the eye
open,flushwithplentyofwaterandgetmedicalattention.
•Thefiguresinthismanualserveanillustrativepurpose. Becauseofthemany
variables associated with any particular installation, the supplier cannot
assume responsibility for actual use based on the figures.
•The supplier neither guarantees that the operator panel is suitable for your
particular application, nor assumes responsibility for your product design,
installation or operation.
•It is recommended to turn on and shut down the operator panel at least once
before installing any components/cards or before connecting the operator
panel to external devices; for example serial devices.
•For Marine panels only:
–The operator panel must be installed and operated as described in this
document to meet this certification.
–Observe precautions for handling electrostatic discharge sensitive devices
1.2 Hazardous Materials
Toxic and hazardous materials or elements
有毒和有害的材料或元素
Part description
零件描述
Pb Hg Cd Cr6+ PBB PBDE
PCB and electronic
components
PCB 和电子元件
XOO O O O
O: Indicates that this toxic or hazardous substance contained in all of the homogenous
materials for this part is below the limit requirement in SJ/T 11363–2014.
Beijer Electronics, MAEN263 4

Safety Precautions
O：表示该有害物质在该部件所有均质材料中的含量均在 SJ/T 11363–2014 规定的限
量要求以下。
X: Indicates that this toxic or hazardous substance contained in at least one of the
homogenous materials for this part is above the limit requirement in SJ/T 11363–2014.
X: 表明该有害物质至少在部件的某一均质材料中的含量超出SJ/T 11363–2014规定
的限量要求。
1.3 Disposal Requirements Under
WEEE Regulations
For professional users in the European Union: If you wish to discard electrical
and electronic equipment (EEE), please contact your dealer or supplier for further
information.
For disposal in countries outside of the European Union: If you wish to discard
this product please contact your local authorities or dealer and ask for the correct
method of disposal.
1.4 ULandcULInstallation
•All devices have to be supplied by a Class 2 power supply.
Warning:
Do not separate when energized.
AVERTISSEMENT, NE PAS SEPARER SOUS TENSION.
Warning:
Donotopenwhenanexplosiveatmosphereispresent.
NE PAS OUVRIR SI UNE ATMOSPHERE EXPLOSIVE EST PRÉSENT.
Warning:
Battery may explode if mistreated. Do not recharge, disassemble or dispose
of in fire.
This product contains a battery that is not user replaceable.
LA BATTERIE PEUT EXPLOSER EN CAS DE MAUVAISE MANIPULATION.
NE LA RECHARGEZ PAS, NE LA DÉMONTEZ PAS ET NE LA JETEZ
PAS DANS LE FEU.
CE PRODUIT CONTIENT UNE PILE QUI NE PEUT PAS ÊTRE
REMPLACÉE PAR L'UTILISATEUR.
Warning:
Explosion hazard! Substitution of components may impair suitability for
Class I, Division 2.
RISQUE D'EXPLOSION! LA SUBSTITUTION DE COMPOSANTS PEUT
NUIRE À LA CONFORMITÉ DE CLASSE I, DIVISION 2.
Beijer Electronics, MAEN263 5

Safety Precautions
Caution:
Temperature code T4 IEC/EN60079-0 (2012) ,IEC/EN 60079-15 (2010) and IEC/ EN
60079-31 (2014).
Protection string Ex nA nC IIC T4 Gc and Ex tc IIIC T75 °C DC.
CODES DE TEMPÉRATURE T4 IEC/EN 60079-0 (2012), ET IEC/EN60079-15 (2010) and
IEC/ EN 60079-31 (2014).
CHAîNE DE PROTECTION Ex nA nC IIC T4 Gc Ex tc IIIC T75 °C Dc.
1.5 IECEx/ATEX Certificate and Dust
Rating
II 3 G Ex nA nC IIC T4 Gc
II 3 D Ex tc IIIC T85 °C Dc
IECEx UL 19.0058X
DEMKO 19 ATEX 1900X
1.6 Conditions of Safe Use for Zone
2/22 ATEX/IECEx
•To avoid electrostatic charge build-up, it must not be rubbed or cleaned with
solvents or a dry cloth when installed/used within a potentially explosive
atmosphere.
•Theareathedeviceismountedinshallnotbemorethanpollutiondegree2,as
defined in IEC/EN 60664-1.
•This equipment has been evaluated for low risk of mechanical impact and
should be installed accordingly.
1.7 During Installation
•Install the operator panel according to the accompanying installation
instructions.
•Ground the operator panel according to the accompanying installation
instructions.
•Only qualified personnel may install the operator panel.
•Separate the high voltage, signal, and supply cables.
•Make sure that the voltage and polarity of the power source is correct before
connecting the operator panel to the power outlet.
•Peripheral equipmentmustbeappropriatefortheapplicationandlocation.
•Use only UL certified and approved M12 cables or M12 connector with cable
gland. See section 3.1 (step 2) for installation details. See section 3.1.1 (step
2) for UL approved M12 cables sets and M12 connector with cable gland.
1.8 During Use
•Keep the operator panel clean.
•Emergency stop and other safety functions may not be controlled from the
operator panel.
•Do not use excessive force or sharp objects when operating the touch screen.
Beijer Electronics, MAEN263 6

Safety Precautions
1.9 Service and Maintenance
•Only qualified personnel should carry out repairs.
•The agreed warranty applies.
•Before carrying out any cleaning or maintenance operations, disconnect the
equipment from the electrical supply.
•Clean the display and surrounding front cover with a soft cloth and mild
detergent.
•The battery must be replaced by an authorized Beijer Electronics service
center.
1.10 Dismantling and Scrapping
•The operator panel or parts thereof shall be recycled according to local
regulations.
•The following components contain substances that might be hazardous to
health and the environment: lithium battery, electrolytic capacitor, and
display.
1.11 Appearance of Air in Touch Screen
Thelayerstructureofthetouchscreencontainsair. Inrarecases, the appearance
of bubbles can arise. This is purely cosmetic and does not affect the functionality
of the operator panel. The appearance can occur under certain environmental
conditions such as temperature, humidity, and atmospheric pressure.
Beijer Electronics, MAEN263 7

Naming Convention
2 Naming Convention
The name of each panel is based on its properties according to the table below.
X2 family Size (inches) Variant
base
pro
marine (= with BL)
control (= with SC)
motion (= with SM)
extreme
4
5
7
10
12
15
21
SC
SM
HB
HP
BL
12V
SL
RO
CO
SoftControl
SoftMotion
High Brightness
High performance
Black
12 Volt
Sealed
Rugged Only
Certification Only
Examples:
•X2 pro 7
•X2 control 10
•X2 marine 12 SC
•X2 marine 15 HB SC
•X2 extreme 7 12V*
•X2 extreme 12 HP SC*
•X2 extreme 7 SL HP*
•X2 extreme 12 SL HP SC*
•X2 extreme 7 CO*
•X2 extreme 12 SL HP RO
Note:
Not all combinations are available.
Note:
* indicates variants including IECEx\ATEX and C1D2 accreditation.
Beijer Electronics, MAEN263 8

Installation
3Installation
3.1 Installation Process
Measurement X2 extreme 15 SL HP
D 100×100mm
Hole size 5.5 ± 0.5 mm
Threadtype M5×0.8mm
Max thread depth 8 mm
Min required engagement 5 mm
Torque (max) 3.5 Nm
The following is needed:
•A Phillips/slot screwdriver
•Four M5 × 0.8 screws conforming to the table above
•Installation tool for mounting screws
Do the following:
1. Unpack and check the delivery. If damage is found, notify the supplier.
Note:
Place the operator panel on a stable surface during installation.
Dropping the operator panel or letting it fall may cause damage.
Beijer Electronics, MAEN263 9

Installation
2. Attach UL certified and approved cables\connectors to the operator panel.
Special precaution must be followed to ensure approved cable\connector sets
are installed according to the environment and application where the device
will be located. The unit is certified to be installed in the following hazardous
environments:
–C1D2, Type 4X
–ATEX\IECEx Zone 2
Note:
Please refer to the following tables for information on which connectors \ cables are to
be used in each of these two environments:
Note:
For information, see table ATEX \ IECEx Zone 2 Environment (M12 cables sets) and Type
4X, C1D2 Environments (M12 connector with cable gland) below.
Note:
M12 connector with cable gland torque: 3 Nm.
3. DrillthecorrectholepatterninpaneloutlinedaboveorinstallunitonVESA
compliant mounting bracket.
–Connect cable A to the terminal, using 14-20 AWG (2.08–0.52 mm2),
180–220 N-cm torque.
Note:
Use minimum 85°C copper conductors only.
Beijer Electronics, MAEN263 10

Installation
Manufacturer Beijer Part
Number
Manufacturer
Model No.
Description
100-1025 77-3529-0000-
50708-0300
M12 male 8p to
blank 3 meter
(COM)
Binder
100-1151 77-3529-0000-
50708-1000
M12 male 8p to
blank 10 meter
(COM)
100-1024 77-4529-0000-
34704-0300
M12 male 4p to
blank 3 meter
(LAN)
Binder
100-1152 77-4529-0000-
34704-1000
M12 male 4p to
blank 10 meter
(LAN)
100-1023 77-3430-0000-
50004-0300
M12 female 4p
to blank 3 meter
(power)
Binder
100-1153 77-3430-0000-
50004-1000
M12 female 4p to
blank 10 meter
(power)
ATEX \ IECEx Zone 2 Environment (M12 cables sets)
Manufacturer Beijer Part
Number
Manufacturer
Model No.
Description Cable Ratings
Binder 100-1148 99-1487-
992-08
X2 extreme
Connector,
M12 SS 8p
male 5.5-
7.5mm Gland
(COM)
Binder 100-1149 99-3729-
995-04
X2 extreme
Connector,
M12 SS 4p
male 5.5-
7.5mm Gland
(LAN)
Binder 100-1150 99-1430-
992-04
X2 extreme
Connector,
M12 SS 4p
female
5.5-7.5 mm
Gland (Power)
CMX cable
rated 300V, 2
4AWG, 8 con-
ductor, 5.5
mm – 7.5 mm
OD, -30° C to
70° C
PLTC cable
rated 300V,
22AWG, 4
conductor,
Wet, Sun Res,
5.5 mm – 7.5
mm OD, -30°
C to 70° C
Type 4X, C1D2 Environments (M12 connector with cable gland)
3.1.1 Protective Connector Shield
Installation Process
Do the following:
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Installation
1. Install the protective connector shield as shown.
2. Secure the cables to the protective connector shield using the included cable
ties
Note:
Theprotectiveconnectorshieldisrequired to be used on all applications.
Beijer Electronics, MAEN263 12

Installation
3.1.2 Connections to the Controller
For information about the cables to be used when connecting the operator panel to
the controller, please refer to the help file for the driver in question.
3.1.3 Other Connections and Peripherals
Cables, peripheral equipment and accessories must be suitable for the application
and its environment. For further details or recommendations, please refer to the
supplier.
Beijer Electronics, MAEN263 13

Technical Data
4TechnicalData
Parameter X2 extreme 15 SL HP
Dimensions,W×H×D 411×286×65mm
Sealing IP66 (IP65 for IECEx \ ATEX)
Touch screen
material
Polyester on glass, ITO film, resistive
Frame overlay Autoflex EBA 180L
Touch screen
operations
1 million finger touch operations
Reverse side
material
Powder-coated aluminum
Frame material Powder-coated aluminum
Weight 4.8 kg
CPU i.MX 6Quad
Quad ARM Cortex-A9 Core
1.0 GHz
1MBL2cache
Serial port COM A M12 (8 pin, female)
1×RS-232 Rx/Tx with RTS (no CTS)
1×RS-422, or 1×RS - 485 or 1×CAN 2.0B
Serial port COM B M12 (8 pin, female)
1×RS-485 with isolated +5V/5mA out for bias resistor
network, or 1×CAN 2.0B with termination
Ethernet LAN A M12 (4 Pin, female, D-coded according to EN/IEC
61076-2-101) 10/100 Mbit via RMII
Ethernet LAN B M12 (4 Pin, female, D-coded according to EN/IEC
61076-2-101) 10/100 Mbit via RMII
USB Supports up to USB 2.0 High Speed
External storage
media
1×SDcard
Flash memory
(application
memory)
3.5 GB SSD (eMMC)
Memory RAM 2 GB DDR3
NVRAM 64 kB
LED 1 × Multi color
Real time clock Yes
Battery BR 2477A/GAN lithium battery,
non replaceable
Power consumption
at rated voltage
28 W
Fuse Internal DC fuse, 4 AT SMT
Beijer Electronics, MAEN263 14

Technical Data
Parameter X2 extreme 15 SL HP
Power supply +24 V DC
CE: The power supply must conform with the requirements
according to EN/IEC 60950 and EN/IEC 61558-2-4.
UL and cUL: The power supply must conform with the
requirements for class 2power supplies.
Display TFT-LCD with LED backlight
800 × 480 pixels, 262k colors
Active area of
display, W × H
15.4” diagonal
Pixel errors Class I (ISO 9241-307)
Backlight brightness 1000 cd/m2
Backlight lifetime 50,000 hours
Operating
temperature
-30°C to +70°C
Storage temperature -40°C to +80°C
Relative humidity in
operation
5% – 95% non-condensation
Vibration 4g, according to EN/IEC 60068-2-6, Test Fc
Mechanical shock 40g, half-sine, 11ms according to EN/IEC60068-2-27
Approvals and
certifications
CE/FCC/KC
Information is available on www.beijerelectronics.com
UL approval Information is available on www.beijerelectronics.com
and/or UL.com
Marine certificates Information is available on www.beijerelectronics.com
Beijer Electronics, MAEN263 15

Chemical Resistance
5 Chemical Resistance
5.1 Metal Casing
The frame and casing material is powder-coated aluminum. This powder paint
withstands exposure to the following chemicals without visible change:
Acetic acid 10% Phosphoric acid 4%
Citric acid 10% Phosphoric acid 10%
Diesel Sea water
Distilled water Sodium chloride 2%
Edible oil Sodium chloride 20%
Fuel oil Sulphuric acid 20%
Hydrogen peroxide 3% Tap water
The powder paint shows limited resistance to the following chemicals at room
temperature:
Butanol Nitric acid 3%
Hydrochloric acid 5% Nitric acid 10%
Isopropyl alcohol Phosphoric acid 43%
Sodium hypochlorite 10% Turpentine
Note:
If exposure to any of the above chemicals is demanded, it is recommended to first test
the chemical in a hidden spot of the metal casing.
Thepowderpaintshowslittleornoresistancetothefollowingchemicalsatroom
temperature:
Acetic acid, conc. Methyl-ethyl ketone Toluene
Acetone Nitric acid 30% Trichlorethylene
Ammonia 5% Phenol Xylene
Ammonia, conc. Sodium hydroxide 5% 97 octane unleaded petrol
Ethyl acetate Sodium hydroxide 30% 98 octane leaded petrol
5.2 Touch Screen and Overlay Material
5.2.1 Protective Film
Autoflex EBA 180L covers the overlay surrounding the screen.
Beijer Electronics, MAEN263 16

Chemical Resistance
Solvent Resistance
The protective film withstands exposure of more than 24 hours duration under
DIN42115Part2tothefollowingchemicalswithoutvisiblechange:
Acetonitrile Diesel Petroleum spirit(1)
Ajax / Vim in solution Downy / Lenor(1) Phosphoric acid (<30%)
Alkalicarbonate
solution(1) Ethanol Potassium ferricyanide
Ammonia (<40%)(1) Glycerine Potassium hydroxide (<30%)
Acetic acid (<50%) Glycol Pure Turpentine
Ariel powder in
solution(1) Gumption(1) SBP 60/95(1)
Bleach(1) Hydrochloric acid (<36%) Sulfuric acid (<10%)
Castor oil Linseed oil Tomato ketchup
Caustic soda (<40%)(1) Methanol Trichloroacetic acid (<50%)
Cutting oil Nitric acid (<10%) White Spirit
Cyclohexanol Paraffinoil Windex
(1)
Diacetone alcohol Persil powder in solution(1) Wisk
(1) Extremely faint glossing of the texture was noted.
The Autoflex protective film withstands DIN 42 115 Part 2 exposure of up to 1
hour duration to glacial acetic acid without visible change.
The Autoflex protective film is not resistant to high pressure steam at over 100
°C or the following chemicals:
Concentrated mineral acids Benzyl alcohol
Concentrated caustic solution Methylene chloride
Beijer Electronics, MAEN263 17

Chemical Resistance
5.2.2 Touch Screen Surface
The touch screen surface on the operator panel withstands exposure to the
following solvents without visible change:
Solvents Time
Acetone 10 minutes
Isopropanol 10 minutes
Toluene 5 ho urs
Thetouchscreensurfaceontheoperatorpanelismadeofpolyesterwithahard
coat to resist scratches and withstand exposure to many solvents without visible
change.
5.2.3 Touch Screen Protector
For harsh environments and exposure to outdoor conditions, it is recommended
to use a protective film to guard the touch screen from damage. This optional part
can be ordered from Beijer Electronics.
Beijer Electronics, MAEN263 18

Operator Panel Drawings
6 Operator Panel Drawings
6.1 Connectors
123456
Pos Connector Description
1Powersupply +24VDC
2 COM B Serial communication port
3 USB 1 + USB 2 USB Host 2.0, max output current 500 mA
4 LAN A 1 × 10/100 Base-T
5 LAN B 1 × 10/100 Base-T
6 COM A Serial communication port
6.1.1 Communication Ports
COM A
Description
Pin COM 1 COM 2 CAN
1-RS422 Tx+
RS485 Tx+/Rx+
1.CAN-H
2 RS232_RxD - -
3 RS232_TxD - -
4 - RS422_Rx+ -
5GND GND -
6-RS422 Tx-
RS485 Tx-/Rx-
CAN-L
7 RS232_RTS - -
8 RS232_CTS RS422_Rx- -
The connector supports up to three independent serial communication channels and
can be configured for RS-232, and RS-422 or 2×RS-485 or 2×CAN.
The connector supports up to two independent serial communication channels and can
be configured for RS-232, and RS-422 or RS-485 or CAN.
COM B
D-sub-9, female
Pin COM 3 CAN
1 RS-485 Tx+/Rx+ CAN-H
2 TERM+ TERM+
Beijer Electronics, MAEN263 19

Operator Panel Drawings
COM B
D-sub-9, female
Pin COM 3 CAN
3- -
4- -
5GND GND
6 RS-485 Tx-/Rx- CAN-L
7 TERM- TERM-
8- -
9V
CC VCC
The connector supports galvanic isolated RS-485 or CAN.
6.1.2 Power Supply
Pin Description M12. 4 pin male
1V
in+
2V
in-
3V
in-
4V
in+
6.1.3 COM A
Pin COM 1 COM 2 COM 3 M12, 8 pin female
1RS422Tx+
RS485 Tx+/Rx+
CAN-H
2 RS232_RxD - -
3 RS232_TxD - -
4 RS422_Rx+ -
5GND GND -
6RS422Tx-
RS485 Tx-/Rx-
CAN-L
7 RS232_RTS - -
8 RS422_Rx- -
Note:
The connector supports up to two independent serial communication channels and can
be configured for RS232, and RS422 or RS485 or CAN.
Beijer Electronics, MAEN263 20