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3 pulses (arg 0)

K-bus Command Error

Beckhoff · CX2100-0914 Embedded PC

Hva betyr 3 pulses (arg 0) ?

The K-bus ERR LED flashes 3 times, with '0' in the argument sequence, indicating a K-bus command error. This usually means either no Bus Terminal is inserted in the bus segment or one of the connected Bus Terminals is defective.

Vanlige årsaker

  • Invalid command received over the K-bus.
  • Command sequence error.
  • Corrupted command data packet.
  • External device sending malformed commands.

Reparasjonssteg & Sjekkliste

Klikk på steg for å spore fremgangen.

  1. 1

    Verify that all required Bus Terminals are physically inserted and correctly seated in their slots.

  2. 2

    To localize a defective Bus Terminal, systematically reduce the number of attached terminals (e.g., using a binary search method) and check if the error persists. Repeat until the faulty Bus Terminal is found and replace it.

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Verifisert teknisk data. Sist oppdatert: March 2026

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Kilde: Beckhoff CX2100-0914 Embedded PC