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                                                                              • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • B&R X67BC8321 POWERLINK Bus Controller Module

                                                                                                                                                              

                                                                                                                                                              X67BC8321 Module Front View

                                                                                                                                                              

                                                                                                                                                              Connector Side View

                                                                                                                                                               

                                                                                                                                                              Product Overview

                                                                                                                                                              The X67BC8321 is an IP67 decentralized POWERLINK bus controller within B&R X67 distributed remote I/O series. It acts as a bidirectional communication gateway between upper-level POWERLINK real-time bus and X2X Link local expansion backplane, integrating 8 software-configurable universal digital I/O channels. It eliminates cabinet wiring workload by direct mounting on machine frames, delivering high-speed synchronous signal acquisition and axis control for harsh industrial environmentsB& R Industrial Automation.

                                                                                                                                                              Core Technical Specifications

                                                                                                                                                              1. Communication Interfaces

                                                                                                                                                              • Fieldbus: POWERLINK V1/V2, 100 Mbps, D-coded M12 Ethernet connector
                                                                                                                                                              • Local Expansion Bus: X2X Link, B-coded M12 connector, supplies 3W power for cascaded I/O modules
                                                                                                                                                              • Minimum control cycle: 200 μs; supports 1:1 synchronous or prescaler-based sync with POWERLINK
                                                                                                                                                              • Dynamic Node Allocation (DNA) supported for automatic network configuration
                                                                                                                                                              • Isolation voltage: 500 Veff between I/O channels and internal bus

                                                                                                                                                              2. Built-in Digital I/O Resources

                                                                                                                                                              • 8 universal 24VDC channels, software switchable as digital input or digital output
                                                                                                                                                              • Single channel load capacity: 0.5A for sensors and small actuators
                                                                                                                                                              • Input function: Configurable signal debounce filter, 2-channel 50kHz high-speed counter for encoder pulse capture
                                                                                                                                                              • Output protection: Hardware short-circuit & overload detection with fault feedback
                                                                                                                                                              • Field wiring: 8×3-pin M8 circular connectors

                                                                                                                                                              3. Electrical Parameters

                                                                                                                                                              • Nominal supply voltage: 24VDC, operating range 18–30VDC
                                                                                                                                                              • Power consumption: 3.5W for bus circuit, 2.5W for internal I/O circuit
                                                                                                                                                              • Complete reverse polarity protection, built-in circuit fuses

                                                                                                                                                              4. Mechanical & Environmental Data

                                                                                                                                                              • Dimension: 53mm (W) × 85mm (H) × 42mm (D)
                                                                                                                                                              • Net weight: 195g
                                                                                                                                                              • Protection rating: Full module IP67 dustproof and splashproof
                                                                                                                                                              • Operating temperature: 0°C ~ +60°C; storage temperature: -20°C ~ +70°C
                                                                                                                                                              • Installation: Direct machine surface mounting, no cabinet required
                                                                                                                                                              • Tightening torque: M8 connectors ≤0.4 Nm, M12 connectors ≤0.6 Nm

                                                                                                                                                              5. Certifications & Diagnostics

                                                                                                                                                              • Approvals: CE, UKCA, UL, ATEX Zone 2 (II 3G Ex nA IIA T5 Gc)
                                                                                                                                                              • Status indicators: Independent LED for each I/O channel, power supply, bus communication status
                                                                                                                                                              • Full diagnostic: Real-time detection of wire break, short circuit, undervoltage, bus communication failure; fault data uploaded to PLC via fieldbus

                                                                                                                                                              Main Functions

                                                                                                                                                              1. POWERLINK-X2X Link Protocol Gateway

                                                                                                                                                                  

                                                                                                                                                                 Converts real-time control data between POWERLINK PLC and distributed X67 remote I/O nodes, realizes synchronous linkage of multiple machine axes and field signals. It supports cascading up to 250 X2X Link I/O modules to expand analog, safety and high-speed signal ports on moving machine parts.
                                                                                                                                                              2. On-machine Local Signal Processing

                                                                                                                                                                  

                                                                                                                                                                 The integrated 8-channel universal DI/DO collects signals from proximity switches, limit sensors and photoelectric eyes, and drives miniature solenoid valves. The high-speed counter module captures incremental encoder feedback for precise positioning control without extra auxiliary I/O modules.
                                                                                                                                                              3. Remote I/O Configuration & Firmware Upgrade

                                                                                                                                                                  

                                                                                                                                                                 All channel logic parameters and module firmware can be remotely configured and updated via POWERLINK bus, no disassembly required for on-site maintenance.
                                                                                                                                                              4. Harsh Condition Decentralized Control

                                                                                                                                                                  

                                                                                                                                                                 IP67 fully sealed enclosure allows direct installation on machine arms, conveying frames and forming stations, drastically reducing long-distance cabinet wiring and lowering system construction cost.

                                                                                                                                                              Application Scenarios

                                                                                                                                                              Spare bus gateway for automated packaging lines, printing machinery, textile production equipment, CNC machine tools, material handling robots and modular automation systems requiring decentralized field I/O layout.

                                                                                                                                                               
                                                                                                                                                               

The structure and details of the product：