The EL6821 EtherCAT Terminal from Beckhoff allows up to 64 DALI/DALI-2 slaves and 64 DALI-2 input devices to be connected. The TwinCAT 3 System Manager makes it easy to configure and parameterise DALI devices flexibly.
Programming the EtherCAT Terminal is effortless. It is programmed using TwinCAT 3 function blocks. The EL6821 also contains an integrated DALI bus power supply that can be switched off, with a guaranteed output current of 220 mA. The galvanically-isolated input voltage is supplied via an EL9562 EtherCAT power supply terminal. The EL6821 EtherCAT Terminal is certified according to the DALI-2 standard.
This means that a maximum of 64 DALI control gears and 64 DALI control devices can be seamlessly integrated into a superordinate EtherCAT network via a compact terminal measuring 12 x 100 x 68 mm (W x H x D). Commissioning and use of the EtherCAT Terminal are supported in a variety of ways. With signal LEDs as status indicators and two digital inputs, commissioning is child’s play. The TwinCAT 3 System Manager makes it simple and easy to configure and parameterise the EL6821 and the DALI devices. The tried and tested TwinCAT 3 PLC library Tc3_DALI is available for programming.
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Beckhoff Automation has appointed Luzuko Bulembu as technical support engineer.
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The introduction of TwinCAT in 1996 marked a decisive evolutionary step for PC-based control. Today, the TwinCAT platform combines all automation functions in a strictly deterministic real-time environment, from PLC and motion control through CNC and measurement technology and beyond, to vision, robotics and pioneering AI tools.
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In the previous articles in this series, the basic theory behind feedforward control was discussed, and it was also shown how to apply feedforward in practice. In this article, it will be shown how well feedforward can work in practice by giving a couple of examples.
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