1303

SERCOS state class 1: Manufacturer-specific error %s-axis %s.

Bosch Rexroth · Motion Control

What does 1303 mean?

This SERCOS state class 1 error reports a manufacturer-specific error on the specified axis. The drive attempts the best possible response with a subsequent torque release. This fault indicates an issue requiring specialized knowledge from the manufacturer for diagnosis and resolution.

Common Causes

  • Servo loop fault
  • Drive fault
  • Manufacturer-specific error on the %s-axis.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Initiate a control reset in the active channel.

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Verified technical data. Last updated: March 2026

Related Faults

1295SERCOS state class 1: Overcurrent fault %s-axis.1291SERCOS state class 1: Cooling fault cut-off %s-axis.1297SERCOS state class 1: Under-voltage fault %s-axis.
Source: Bosch Rexroth Motion Control
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