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Short description
Bus controller CANopen
General information
Inputs/Outputs 16 digital channels, configurable as inputs or outputs using software, inputs with additional functions
Insulation voltage between channel and bus 500 Veff
Nominal voltage 24 VDC
B&R ID code
Bus controller 0xB129
Internal I/O module 0xB529
Sensor/Actuator power supply 0.5 A summation current
Status indicators I/O function per channel, supply voltage, bus function
Outputs Yes, using LED status indicator and software
I/O power supply Yes, using LED status indicator and software
Connection type
Fieldbus M12, A-coded
X2X Link M12, B-coded
Inputs/Outputs 16x M8, 3-pin
I/O power supply M8, 4-pin
Power output 15 W X2X Link power supply for I/O modules
Power consumption
Fieldbus 2.11 W
Internal I/O 3.71 W
X2X Link power supply 21.59 W at maximum power output for connected I/O modules
CE Yes
ATEX Zone 2, II 3G Ex nA IIA T5 Gc
IP67, Ta = 0 - Max. 60°C
TÜV 05 ATEX 7201X
UL cULus E115267
Industrial control equipment
HazLoc cCSAus 244665
Process control equipment
for hazardous locations
Class I, Division 2, Groups ABCD, T5
KC Yes
Fieldbus CANopen
Variant 2x M12 interface for the Y-connector integrated in the module
Max. distance 1000 m
Transfer rate Max. 1 Mbit/s
Default transfer rate Automatic transfer rate detection
Min. cycle time
Fieldbus No limitation
X2X Link 500 μs
Synchronization between bus systems possible No
Terminating resistor Can be optionally screwed onto the integrated Y-connector
I/O power supply
Nominal voltage 24 VDC
Voltage range 18 to 30 VDC
Integrated protection Reverse polarity protection
Power consumption
Sensor/Actuator power supply Max. 12 W
Sensor/Actuator power supply
Voltage I/O power supply minus voltage drop for short-circuit protection
Voltage drop for short-circuit protection at 0.5 A Max. 2 VDC
Summation current Max. 0.5 A
Short-circuit proof Yes
Digital inputs
Input characteristics per EN 61131-2 Type 1
Input voltage 18 to 30 VDC
Input current at 24 VDC Typ. 4 mA
Input circuit Sink
Input filter
Hardware ≤10 μs (channels 1 to 4) / ≤70 µs (channels 5 to 16)
Software Default 0 ms, configurable between 0 and 25 ms in 0.2 ms intervals
Input resistance Typ. 6 kΩ
Additional functions 50 kHz event counting, gate measurement
Switching threshold
Low <5 VDC
High >15 VDC
Event counters
Quantity 2
Signal form Square wave pulse
Evaluation Each negative edge, cyclic counter
Input frequency Max. 50 kHz
Counter 1 Input 1
Counter 2 Input 3
Counter frequency Max. 50 kHz
Counter size 16-bit
Gate measurement
Quantity 1
Signal form Square wave pulse
Evaluation Positive edge - Negative edge
Counter frequency
Internal 48 MHz, 3 MHz, 187.5 kHz
Counter size 16-bit
Length of pause between pulses ≥100 µs
Pulse length ≥20 µs
Supported inputs Input 2 or input 4
Digital outputs
Variant FET positive switching
Switching voltage I/O power supply minus residual voltage
Nominal output current 0.5 A
Total nominal current 8 A
Output circuit Source
Output protection Thermal shutdown in the event of overcurrent or short circuit, integrated protection for switching inductive loads, reverse polarity protection of the output power supply
Diagnostic status Output monitoring with 10 ms delay
Leakage current when the output is switched off 5 µA
Switching on after overload shutdown Approx. 10 ms (depends on the module temperature)
Residual voltage <0.3 V at 0.5 A nominal current
Peak short-circuit current <12 A
Switching delay
0 → 1 <400 µs
1 → 0 <400 µs
Switching frequency
Resistive load Max. 100 Hz
Inductive load See section "Switching inductive loads".
Braking voltage when switching off inductive loads 50 VDC
Electrical properties
Electrical isolation
Bus isolated from CANopen and channel

Channel isolated from CANopen

Channel not isolated from channel
Operating conditions
Mounting orientation
Any 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 IP67
Ambient conditions
Operation -25 to 60°C
Derating -
Storage -40 to 85°C
Transport -40 to 85°C
Mechanical properties
Width 53 mm
Height 155 mm
Depth 42 mm
Weight 300 g
Torque for connections
M8 Max. 0.4 Nm
M12 Max. 0.6 Nm
Material number:
  • Fieldbus: CANopen
  • 16 digital channels, configurable as inputs or outputs
  • Auto-configuration of I/O modules
  • Easy I/O configuration using Automation Studio V4.3 or later
  • 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)

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 (www.br-automation.com). The evaluation license is permitted to be used to create complete configurations for fieldbus bus controllers at no cost.

Automation Studio HW Upgrades Version (Date) Download
V3.0 HW Upgrade (X67BC4321.L08-10) EXE / 2 MB
V4.3 HW Upgrade (X67BC4321.L08-10) EXE / 2 MB
Certificates Version (Date) Download
244665 CSA HazLoc Certificate of Compliance X20, X67 PDF / 56 KB
CANopen Family Certificate X67BC4321xxxx-10 PDF / 173 KB
E115267 UL CoC X67 PDF / 84 KB
TÜV 05 ATEX 7201 X PDF / 129 KB
X20, X67 KC certificates PDF / 6 MB
Documentation Version (Date) Download
CANopen Bus Controller User's manual PDF / 2 MB
Datasheet X67BC4321.L08-10 PDF / 604 KB
X67 System User´s Manual PDF / 19 MB
E-CAD (Electro or EPLAN Templates) Version (Date) Download
X67 EPLAN P8 EXE / 85 MB
X67 EPLAN P8 from V2.4 EXE / 105 MB
Fieldbus equipment description files Version (Date) Download
CANopen-10_PDO_Mapping_Tool ZIP / 124 KB
X67BC4321.L08-10 EDS Package ZIP / 38 KB
M-CAD (Mechan. Templates) Version (Date) Download
3D File STEP X67BC4321.L08-x ZIP / 3 MB

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