Digital guide
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B&R 8X0005.00-1
Model Series: X20 Bus System — Bus Coupler / Gateway
Product Overview:
The B&R 8X0005.00-1 is an X20 Bus Coupler (BC0053) that serves as the gateway between the X20 distributed I/O bus and the X67/X90/X20CPU controller. It converts the X20 bus protocol to the system bus protocol used by the B&R CPU, enabling up to 63 X20 modules to be connected to a single controller. It is the central communication hub for any X20 installation.
Detailed content
Technical Specifications:
| Parameter | Value |
|---|---|
| Function | X20 bus to system bus gateway |
| Max. X20 Modules per Coupler | 63 modules |
| Bus Cycle Time (X20 side) | 500 µs |
| System Bus Interface | Sercos III / EtherCAT / Powerlink (depending on CPU) |
| Number of X20 Ports | 2 (daisy-chain capable) |
| LED Indicators | Power, Bus 1, Bus 2, Error |
| Power Supply | Bus-powered (from CPU) |
| Power Consumption | ≤ 1.0 W |
| Operating Temperature | 0 °C to +55 °C |
| Storage Temperature | -25 °C to +70 °C |
| Dimensions (W x H x D) | 50 mm x 90 mm x 74.5 mm |
| Weight | Approx. 150 g |
| Mounting | DIN rail TS 35 (EN 60715) |
| Certifications | CE, UL, cUL, ATEX (Zone 2) |
Functional Features:
- Dual X20 bus ports — supports daisy-chain topology (up to 126 modules total with 2 couplers)
- Protocol conversion: X20 bus ↔ Sercos III / EtherCAT / Powerlink
- Hot-swap capable — modules can be replaced during operation
- Integrated diagnostics with per-port LED indicators
- Auto-detection of connected X20 modules
- GSD/GSDML file support for third-party master configuration
Applicable Industries:
All B&R X20-based automation systems — machine building, packaging, process control, material handling.
Installation Requirements:
- Mount on DIN rail TS 35 as the first module in the X20 chain (closest to CPU)
- Connect system bus cable to B&R CPU (X67/X90/X20)
- Maximum bus length: 100 m (copper) or 200 m (fiber optic with media converter)
- Maximum 63 modules per coupler — use second coupler for larger systems
- Connect X20 service coupler (8SCS005.0000-0) for commissioning access
