NumberOfSampInv (Status.2)

Statistical Invalid NumberOfSamples

Allen-Bradley · Logix 5000 Advanced Process Control and Drives

What does NumberOfSampInv (Status.2) mean?

The NumberOfSamples parameter configured for the statistical instruction is invalid or incompatible with the size of the StorageArray or WeightArray. This condition prevents the averaging algorithm from executing and holds the Out value.

Common Causes

  • The NumberOfSamples input is outside the valid range of 1 to the minimum size of the StorageArray or WeightArray, or the array sizes are incorrectly defined.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Verify the value of the NumberOfSamples input parameter — ensure it is an integer between 1 and the minimum defined size of either StorageArray or WeightArray.

  2. 2

    Check the declared sizes of StorageArray and WeightArray (if used) to ensure they are adequately dimensioned for the desired number of samples.

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Verified technical data. Last updated: March 2026

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Source: Allen-Bradley Logix 5000 Advanced Process Control and Drives