PROFIBUS: fatal SW error

What does A00706 mean?

A fatal software error has occurred within the PROFIBUS communication module, potentially related to hardware checks, general communication issues, or problems with the V1SL stack. This critical error can lead to a complete loss of PROFIBUS connectivity and drive control, rendering the system inoperable via PROFIBUS.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   If the problem remains, contact Siemens Service Department as it may indicate a hardware fault with the control unit's communication module.