EL6751-0000 Beckhoff
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The Beckhoff EL6751-0000 is part of the EL EtherCAT Terminals series and features a CANopen bus system with a D-Sub 9-pole interface. It supports up to 127 slave devices and has a typical E-bus current of 230 mA. This unit offers status LED diagnostics and mounts on a 35 mm DIN rail, with an IP20 protection class.
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Product Description:
The EL6751-0000 is a communication terminal produced by Beckhoff within the EL EtherCAT Terminals series. It acts as a gateway between an EtherCAT I/O segment and a subordinate CANopen network, allowing controllers on the EtherCAT side to exchange process data with CAN-based devices such as drives, sensors, or operator panels. By occupying a single slot in a modular I/O station, the terminal integrates CAN-level machine components into centralized TwinCAT projects without external couplers. This arrangement keeps CANopen devices within the same control architecture as the local EtherCAT terminals.
The unit exposes one CANopen channel through a D-Sub 9-pole connector and supports the CANopen protocol at bit rates up to 1 Mbit/s. Up to 127 slaves can be addressed on the downstream bus, giving sufficient node capacity for distributed field devices. Typical internal supply demand is 230 mA typ. from the E-bus, so no additional 24 V feed is required for logic functions. The physical CAN path is galvanically isolated from the EtherCAT backplane, which helps reduce ground-loop noise and protects upstream electronics. The terminal appears as a single EtherCAT object, with PDO mapping handled in software, and its variable installation orientation supports both horizontal and vertical cabinet layouts.
The terminal snaps onto a 35 mm DIN rail and carries an IP20 rating, so it is intended for enclosed control panels rather than exposed plant floors. Power and data for the internal circuitry are taken directly from neighboring modules through the E-bus contact strip, which reduces wiring effort inside the station. The front connection keeps the CAN interface accessible from the face of the terminal during cabinet integration. Front-panel Status LEDs indicate EtherCAT state, CAN bus errors, and node activity, making operating conditions easier to identify at a glance.
Frequently Asked Questions about EL6751-0000:
Q: What type of bus interface does the EL6751-0000 use?
A: The EL6751-0000 uses a D-Sub 9-pole as its bus interface.
Q: How is the bus isolated on the EL6751-0000?
A: This model operates with galvanic uncoupling for bus isolation.
Q: What is the maximum data rate for the EL6751-0000 EtherCAT terminal?
A: The EL6751-0000 supports a maximum data rate of 1 Mbit/s on the CANopen bus system.
Q: How many fieldbus channels does the EL6751-0000 include?
A: A single fieldbus channel is provided on the EL6751-0000 terminal.
Q: What is the mounting method for the EL6751-0000?
A: It mounts on a standard 35 mm DIN rail for installation.
