3102

Stack overflow

ABB · ACS850 Standard Program Firmware

What does 3102 mean?

A fatal synchronous programming error indicating that the program's call stack has exceeded its allocated memory limit. This typically results from deep or infinite recursion, or excessive local variable usage, leading to an immediate program crash without standard error handling mechanisms.

Common Causes

  • Infinite recursion in a Mint program function, where a function repeatedly calls itself without a proper termination condition.
  • Excessive depth of nested function calls, consuming all available stack memory for return addresses and local variables.
  • Declaration of large local variables (e.g., large arrays) within functions that are called frequently or recursively.
  • A fault in the program logic causing an unexpectedly deep call chain.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Review the Mint program code for any recursive function calls; ensure each recursive function has a well-defined base case to terminate recursion.

  2. 2

    Refactor deep nested function calls into iterative loops or a flatter function structure to reduce stack depth.

  3. 3

    Minimize the use of large local variables within frequently called functions; consider using global variables or dynamically allocated memory if available and appropriate.

  4. 4

    Implement stack usage monitoring (if supported by the development environment) to identify functions contributing most to stack consumption.

  5. 5

    Consider increasing the allocated stack size (if configurable in the drive's system parameters or firmware settings) as a last resort, after optimizing code.

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Verified technical data. Last updated: March 2026

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Source: ABB ACS850 Standard Program Firmware