EK1122-0080 Beckhoff
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The Beckhoff EK1122-0080 is a 2-port EtherCAT junction, designed for use in star topology networks. Part of the EK EtherCAT Couplers series, it features Fast Hot Connect, IP20 protection class, and bridges unused ports 1 and 2 automatically. No distributed clocks are required for operation.
Internal Product Review
The EK1122-0080 is a Beckhoff 2-port EtherCAT junction coupler designed for star topology networks. Fast Hot Connect support and group boot-up in under 1 second without distributed clocks give startup behavior a very efficient character. IP20 protection and bridged handling of unused ports add practical value for clean control cabinet integration.
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Product Description:
The EK1122-0080 is an EtherCAT coupler produced by Beckhoff for the EK EtherCAT Couplers series. It serves as a compact junction that creates network branches from a single fieldbus trunk, enabling flexible layouts inside control panels without external switches. The unit mounts on a standard DIN rail, where it passes E-bus power and EtherCAT telegrams to downstream terminals. This arrangement extends the network reach and provides additional topology options for automated machinery without requiring a separate network switch.
The unit operates as a 2-port EtherCAT junction with branch sockets that share its internal E-bus connection. Both ports receive power directly from the upstream coupler, eliminating the need for a separate supply at the junction. Support for Fast Hot Connect allows branch segments to be recognized rapidly during controller startup. This startup function does not make the junction hot-swappable during live operation. Network readiness occurs in less than 1 s, helping to keep machine startup sequences short. The housing has an IP20 protection rating, so the module must be installed inside a suitable control enclosure. Finger-safe terminals help protect against accidental contact with energized components during normal handling. Distributed clocks are not required for the module’s operation, which reduces the amount of timing configuration needed for the junction.
Packet flow through the coupler follows the programmed order of port 1, then port 2, then the E-bus. This forwarding sequence maintains predictable telegram routing when several devices operate on connected branches. The module is intended for a star topology, allowing separate machine sections to remain connected to one EtherCAT master while supporting branch-level diagnostics. Each Fast Hot Connect port has special markings that make the corresponding cable connections easier to identify during installation and system setup. When a branch is not populated, the unit keeps ports 1 and 2 bridged, preserving telegram continuity toward the remaining node chain. The internal bridge allows network traffic to continue without requiring a device on every available branch connection.
