Device unknown

What does 40 mean?

An unknown option board or drive has been detected. Subcodes in T.14 provide further detail: S1 (Unknown device), S2 (Power1 not same type as Power2), S3 (NXS or NXP1 and star coupler incompatibility), S4 (Software and control unit incompatible), S5 (Old control board version).

• An unrecognized option board is connected to the drive.
• Faulty communication handshake with the installed option board.
• Incorrectly seated option board.
• Drive firmware incompatibility with the option board.
• Defective option board.

Click steps to track your progress.

1. 1

   Remove the option board and restart the drive to confirm fault clears.

2. 2

   Ensure the option board is fully seated in its slot (e.g., Terminal block X3).

3. 3

   Verify the option board model is compatible with the drive firmware version.

4. 4

   If a subcode (S1, S2) is present, consult documentation for specific device identification.

5. 5

   Test the drive with a known good, compatible option board.