Here’s a concise breakdown of the BK9100 Ethernet TCP/IP Bus Coupler from Beckhoff:

• Connectivity: Links Ethernet with modular, extendable electronic terminal blocks.

• Terminal Capacity: Supports 1 to 64 terminals, expandable up to 255 with K-bus extension.

• Automatic Recognition: Identifies connected terminals and assigns inputs/outputs automatically.

• Ethernet Support: Operates at 10 Mbit/s and 100 Mbit/s, using RJ45 connectors.

• IP Addressing: Configurable via DIP switch or DHCP server.

• Dual Ethernet Ports: Functions as a 2-channel switch, enabling line topology instead of star topology.

• Cascading Capability: Up to 20 BK9100 units can be cascaded, achieving a maximum line length of 2 km.

• TwinCAT System Communication: Supports ADS TwinCAT, allowing configuration tools and Windows drivers.

• Modbus TCP Support: Compatible with Open Modbus, a widely used master/slave protocol.

• Power Supply: Operates on 24 V DC, with a maximum input current of 500 mA.

• Electrical Isolation: Provides 500 V isolation between power contacts, supply voltage, and fieldbus.

• Topology Options: Supports line or star wiring, with 100 m distance between stations.