EL
ErrorLib
Brands
||
  1. Home
  2. SEW Eurodrive
  3. MOVIMOT Field Distributor
  4. 28
About·Privacy·Terms

ErrorLib — Industrial Fault Code Library

Disclaimer: ErrorLib is an independent technical reference tool. While we aim for accuracy, always verify with the manufacturer’s official service manuals before performing maintenance on industrial equipment. ErrorLib is not affiliated with the brands listed.

28

Fieldbus timeout

SEW Eurodrive · MOVIMOT Field Distributor

What does 28 mean?

No master-slave communication took place within the configured response monitoring period on the fieldbus. This results in process output data being set to 0 (DO=0) and the fault is disengageable.

Common Causes

  • Absence of master-slave communication within the defined response monitoring period.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the communications routine and timing configuration of the master controller for proper operation.

Browse all codes in this manual (30)
Verified technical data. Last updated: April 2026

Related Faults

01Overcurrent in output stage06Phase fault07DC link voltage too high
Source: SEW Eurodrive MOVIMOT Field Distributor
Open Manual (Page 32)Search more codes in this manual