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Short description
Bus controller CANopen slave
General information
B&R ID code 0xA8B8
Status indicators Module status, bus function, data transfer, terminating resistor
Module status Yes, using LED status indicator and software
Bus function Yes, using LED status indicator and software
Data transfer Yes, using LED status indicator
Terminating resistor Yes, using LED status indicator
Power consumption
Bus 1.5 W (rev. <H0: 2 W)
CE Yes
ATEX Zone 2, II 3G Ex nA nC IIA T5 Gc
IP20, Ta (see X20 user's manual)
FTZÚ 09 ATEX 0083X
UL cULus E115267
Industrial control equipment
HazLoc cCSAus 244665
Process control equipment
for hazardous locations
Class I, Division 2, Groups ABCD, T5
DNV GL Temperature: B (0 - 55°C)
Humidity: B (up to 100%)
Vibration: B (4 g)
EMC: B (bridge and open deck)
KR Yes
Fieldbus CANopen slave
Variant 5-pin male multipoint connector
Max. distance 1000 m
Transfer rate Max. 1 Mbit/s
Default transfer rate Automatic transfer rate detection or fixed setting
Min. cycle time
Fieldbus No limitation
X2X Link 500 μs
Synchronization between bus systems possible No
Terminating resistor Integrated in module
Electrical properties
Electrical isolation CANopen isolated from I/O
CANopen not isolated from bus
Operating conditions
Mounting orientation
Horizontal Yes
Vertical Yes
Installation elevation above sea level
0 to 2000 m No limitation
>2000 m Reduction of ambient temperature by 0.5°C per 100 m
Degree of protection per EN 60529 IP20
Ambient conditions
Horizontal mounting orientation -25 to 60°C
Vertical mounting orientation -25 to 50°C
Derating -
Storage -40 to 85°C
Transport -40 to 85°C
Relative humidity
Operation 5 to 95%, non-condensing
Storage 5 to 95%, non-condensing
Transport 5 to 95%, non-condensing
Mechanical properties
Note Order 1x terminal block TB2105 separately.
Order 1x terminal block X20TB12 separately.
Order 1x power supply module X20PS9400 X20PS9402 separately.
Order 1x bus base X20BB80 separately.
Pitch 37.5 +0.2 mm
Material number:
  • Fieldbus: CANopen
  • Auto-configuration of I/O modules
  • I/O configuration via the fieldbus
  • Constant response times even with large amounts of data (max. 32 Rx and 32 Tx PDOs)
  • Configurable I/O cycle (0.5 to 4 ms)
  • Possible to configure the transfer rate or have it detected automatically
  • Heartbeat consumer and producer
  • Emergency producer
  • 2x SDO server, NMT slave
  • Simple bootup (autostart)
  • Terminal access via the serial interface on the X20PS9400
  • Integrated terminating resistor

CAN (Controller Area Network) systems are widespread in the field of automation technology. CAN topology is based on a line structure and uses twisted wire pairs for data transfer. CANopen is a higher-layer protocol based on CAN. As a standardized protocol, it provides a high degree of flexibility for implementing a wide range of configurations.

The bus controller makes it possible to connect up to 253 X2X Link I/O modules to CANopen. A transition between IP20 and IP67 protection outside of the control cabinet is possible by aligning X20, X67 or XV modules one after the other as needed at distances up to 100m. All CANopen transmission types such as synchronous, event and polling modes are supported together with PDO linking, life/node guarding, emergency objects, and much more.

Only the standard function model (see the respective module description) is supported when the bus controller is used together with multi-function modules it has automatically configured itself.

Automation Studio V4.3 or later can be used to easily create configuration files (e.g. DCF files). All other function models are also supported by transferring configuration data to the bus controller (e.g. via the master environment with an SDO download).

Automation Studio can be downloaded at no cost from the B&R website ( The evaluation license is permitted to be used to create complete configurations for fieldbus bus controllers at no cost.

Mandatory Accessories
System modules for bus controllers
X20BB80 X20 bus base, for X20 base module (BC, HB, etc.) and X20 power supply module, X20 end cover plates (left and right) X20AC0SL1/X20AC0SR1 included
X20PS9400 X20 power supply module, for bus controller and internal I/O power supply X2X Link power supply
X20PS9402 X20 power supply module, for bus controller and internal I/O power supply, X2X Link power supply, supply not electrically isolated
Terminal blocks
0TB2105.9010 Accessory terminal block, 5-pin, screw clamps 2.5 mm²
0TB2105.9110 Accessory terminal block, 5-pin, push-in terminal block 2.5 mm²
X20TB12 X20 terminal block, 12-pin, 24 VDC keyed
Automation Studio HW Upgrades Version (Date) Download
V4.3 HW Upgrade (X20BC0043-10) EXE / 716 KB
Certificates Version (Date) Download
244665 CSA HazLoc Certificate of Compliance X20, X67 PDF / 56 KB
ABS Certificate of Product Design Assessment - X20 IO Series PDF / 2 MB
CANopen Family Certificate X20BC0x43-10 PDF / 277 KB
DNV GL Type Approval Certificate - X20 / Power Panel T30 PDF / 164 KB
E115267 UL CoC X20 PDF / 847 KB
FTZU 09 ATEX 0083X PDF / 697 KB
KR Type Approval Certificate MIL39390-AC003 (X20 System) PDF / 758 KB
Lloyds Register PDF / 506 KB
Documentation Version (Date) Download
CANopen Bus Controller User's manual PDF / 2 MB
Datasheet X20BC0043-10 PDF / 219 KB
X20 System User´s Manual PDF / 56 MB
E-CAD (Electro or EPLAN Templates) Version (Date) Download
X20 EPLAN P8 from V2.4 EXE / 161 MB
Fieldbus equipment description files Version (Date) Download
CANopen-10_PDO_Mapping_Tool ZIP / 124 KB
X20BC0043-10 EDS Package ZIP / 34 KB
M-CAD (Mechan. Templates) Version (Date) Download
3D File DXF/STEP X20 Bus Controller CAN/DeviceNet ZIP / 28 KB
Dimensions PDF X20 Bus Controller CAN/DeviceNet PDF / 4 KB

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