47

System bus 1 timeout

SEW Eurodrive · MCBSM

What does 47 mean?

Stop without inhibit due to a fault during communication via the system bus. This indicates a loss of communication with other connected devices on the system bus, disrupting coordinated control and data exchange.

Common Causes

  • Communication timeout detected on the system bus (Bus 1).
  • Loss of communication with a critical drive component or network node.
  • Faulty bus wiring or connector.
  • Interference on the system bus.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the physical system bus connection cables for damage, loose terminals, or improper termination.

  2. 2

    Verify the communication parameters and addresses for all devices on System Bus 1.

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Verified technical data. Last updated: March 2026

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