Overflow; Histogram Overflow

What does F00F mean?

This error indicates a data overflow condition, specifically mentioning a histogram overflow. This means the data being collected or processed has exceeded its allocated storage capacity, leading to data loss or inaccurate statistical analysis.

• Data collection rate exceeding the histogram buffer size.
• Incorrect scaling or range settings for data accumulation.
• Insufficient memory allocated for histogram data.

Click steps to track your progress.

1. 1

   Verify the configuration parameters of the histogram instruction (e.g., number of bins, upper/lower limits, data type, update rate) within the PLC program.

2. 2

   Monitor the actual input data values and their frequency feeding the histogram instruction to identify values exceeding expected limits or an unusually high data rate.

3. 3

   Inspect the PLC program logic for data scaling or conversion routines preceding the histogram instruction, ensuring proper range and resolution for the input data.

4. 4

   Check the memory allocation and data type of the array or data table used to store the histogram bins and counters for sufficient capacity to prevent overflow.