The BK1120 EtherCAT Bus Coupler from Beckhoff is a device that connects EtherCAT protocol at the fieldbus level with Bus Terminals. Here are some key points about it:

• Protocol Conversion: Converts Ethernet 100BASE-TX telegrams to the internal, fieldbus-independent terminal bus.

• Connectivity: Features two RJ45 sockets for network connection and optional extension.

• Bus Terminal Support: Can connect up to 64 Bus Terminals, expandable to 255 via K-Bus extension.

• Power Supply: Operates on 24V DC, with power contacts supporting up to 10A.

• Data Transfer: Supports 100 Mbit/s transfer rate with 1024-byte input/output capacity.

• Installation: Mounted on a 35mm DIN rail, conforming to EN 60715.

• Environmental Resistance: Works in temperatures from -25°C to +60°C, with 95% relative humidity tolerance.

• Certifications: Approved with CE, CCC, UL, ATEX, IECEx markings.