EL6692-0000 Beckhoff
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The Beckhoff EL6692-0000 is part of the EL EtherCAT Terminals series and features two EtherCAT input/output ports, supporting up to 100 meters of cable length using 100BASE-TX. It offers a process image width of 480 bytes per direction and supports a total of 236 cyclic variables, with an IP20 protection class. This terminal uses a 24 VDC secondary supply and mounts on a 35 mm rail.
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Product Description:
Beckhoff manufactures the EL6692-0000, a communication terminal in the EL EtherCAT Terminals series. It links two independent EtherCAT networks through back-to-back controllers, allowing one machine segment to exchange real-time data with another without combining both networks into a single control domain. Within an automation cabinet, the unit occupies a single terminal slot on a DIN rail and transfers process data between segments so distributed controllers can share variables without routing traffic through higher-level PCs or external switches.
The terminal offers two independent EtherCAT channels, each with 2 x EtherCAT input/output ports. When standard industrial cabling is used, every port supports line lengths up to 100 m (100BASE-TX), letting the module sit as far as one hundred meters from adjoining nodes in a production cell. Process data are exchanged in blocks of 480 bytes each direction, which simplifies memory mapping inside PLC tasks and keeps the transfer size predictable during cyclic updates. The latch engages a 35 mm DIN rail, and the housing has IP20 protection for use in clean, closed panels. Beckhoff's E-bus backplane carries power and field signals to adjacent terminals without extra wiring. Each channel also provides secondary network access through 2 x 100 Mbit/s Ethernet via RJ45 connections for diagnostics or other data services that run beside the real-time EtherCAT frame.
Cyclic data exchange is clocked by distributed clocks synchronized from the master, while asynchronous mailbox traffic follows the transport method used for asynchronous fieldbus communication. Up to 236 cyclic variables can be declared, and they are stored with a fixed 2-byte alignment so controllers avoid extra padding when addressing words and maintain consistent word boundaries. The electronics draw a 24 VDC secondary supply from the power feed terminal and pass it through the internal E-bus to downstream modules. Push-in spring contacts on the front simplify wiring, help preserve secure connections under vibration, and support installation in confined control enclosures.
