B&R X20BC008U
Protocol: OPC UA I/O configuration via OPC UA 10 ms minimum cycle time Integrated switch for wiring multiple slaves 100 Mbit/s full-duplex mode Up to 1440 bytes of input data and up to 1440 bytes of output data possible Integrated web page for firmware updates OPC UA diagnostics and module diagnostics at runtime via OPC UA clients This bus controller provides OPC UA server functions. This allows any OPC UA clients access to read or write data from I/O modules connected to the bus controller.
Lifecycle & replacement
No manufacturer-published lifecycle data for B&R part numbers is indexed here yet. Ask IAC to check availability and an upgrade path.
IAC stocks legacy spares and exchange units and quotes upgrade paths. Send us the nameplate details and we will confirm a compatible replacement.
Technical specifications
Short description
| Bus controller | OPC UA server |
General information
| Diagnostics / Module status | Yes, using LED status indicator and software |
| Diagnostics / Bus function | Yes, using LED status indicator and software |
| Power consumption / Bus | 2.5 W |
| Certifications / CE | Yes |
| Certifications / UKCA | Yes |
| Certifications / CRA (Cyber Resilience Act) | Evaluation ongoing |
| Certifications / ATEX | Zone 2, II 3G Ex nA nC IIA T5 Gc IP20, Ta (see X20 user's manual) FTZÚ 09 ATEX 0083X |
| Certifications / UL | cULus E115267 Industrial control equipment |
| B&R ID code | 0xEAFB |
| Status indicators | Module status, bus function |
| Additional power dissipation caused by actuators (resistive) [W] | - |
Interfaces
| Transfer / Physical layer | 100BASE-TX |
| Transfer / Half-duplex | Yes |
| Transfer / Full-duplex | Yes |
| Transfer / Autonegotiation | Yes |
| Transfer / Auto-MDI/MDIX | Yes |
| Min. cycle time / Fieldbus | 10 ms |
| Min. cycle time / X2X Link | 2 ms |
| Fieldbus | OPC UA server |
| Variant | 2x shielded RJ45 (switch) |
| Line length | Max. 100 m between 2 stations (segment length) |
| Transfer rate | 100 Mbit/s |
| Synchronization between bus systems possible | Yes |
Electrical properties
| Electrical isolation | OPC UA isolated from bus and I/O |
Operating conditions
| Mounting orientation / Horizontal | Yes |
| Mounting orientation / Vertical | Yes |
| Installation elevation above sea level / 0 to 2000 m | No limitation |
| Installation elevation above sea level / >2000 m | Reduction of ambient temperature by 0.5°C per 100 m |
| Degree of protection per EN 60529 | IP20 |
Ambient conditions
| Temperature / Operation / Horizontal mounting orientation | -25 to 60°C |
| Temperature / Operation / Vertical mounting orientation | -25 to 50°C |
| Temperature / Derating | - |
| Temperature / Storage | -40 to 85°C |
| Temperature / Transport | -40 to 85°C |
| Relative humidity / Operation | 5 to 95%, non-condensing |
| Relative humidity / Storage | 5 to 95%, non-condensing |
| Relative humidity / Transport | 5 to 95%, non-condensing |
Mechanical properties
| Note | Order 1x terminal block X20TB12 separately. Order 1x power supply module X20PS9400 or X20PS9402 separately. Order 1x bus base X20BB80 separately. |
| Pitch | 37.5⁺⁰.² mm |
Documentation & CAD
Files hosted by B&R Industrial Automation; links open the official download page.
Datasheets
Manuals
3D CAD models
ECAD / EPLAN
Get a quote for a replacement
Industrial Automation Co. stocks, sources, and repairs B&R parts — new, refurbished, or exchange units with warranty.
Specifications from the official B&R product catalog. Always confirm against the datasheet for your exact revision.