81-85

DPI Port Communication Loss

Allen-Bradley · PowerFlex 700 AC Drives

What does 81-85 mean?

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.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 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.

  2. 4

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

Source: Allen-Bradley PowerFlex 700 AC Drives
Open Manual (Page 87)