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81-85

DPI Port Communication Loss

Allen-Bradley · PowerFlex 700

¿Qué significa 81-85 ?

A DPI port has stopped communicating, or a SCANport device was connected to a drive operating DPI devices at 500k baud. This indicates a loss of communication with a connected DPI device, which can prevent control commands or feedback from reaching the drive. The fault code varies depending on which port (1-5) lost communication.

Causas comunes

  • Loss of communication on the DPI (Drive Parallel Interface) port.
  • Faulty DPI cable connection.
  • Incorrect DPI addressing or configuration (e.g., P8-xx parameters).
  • Communication failure with the connected device on the DPI bus.
  • DPI device not powered or malfunctioning.

Pasos de reparación & Lista de verificación

Haga clic en los pasos para seguir su progreso.

  1. 1

    If the adapter was not intentionally disconnected, check the wiring to the affected DPI port.

  2. 2

    Check the HIM (Human Interface Module) connection.

  3. 3

    If an adapter was intentionally disconnected and the [Logic Mask] bit for that adapter is set to "1", set the [Logic Mask] bit for the adapter to "0" to disable this fault.

  4. 4

    Replace wiring, port expander, adapters, or Main Control Board as required.

Ver todos los códigos en este manual (49)
Datos técnicos verificados. Última actualización: March 2026

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