FB ENVELOPE Value 3

InValue Error

Beckhoff · TwinSAFE Logic FB

What does FB ENVELOPE Value 3 mean?

A general error related to the input value (InValue) has occurred within the FB Envelope function block. This could be due to invalid input data, a fault in the input signal path, or internal processing issues. This fault will lead to the FB entering a safe state, halting operation.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    Review the FB Envelope configuration parameters related to 'InValue' for any misconfiguration or out-of-range settings.

  2. 4

    Utilize TwinCAT diagnostics to get further details on the 'InValue Error' and monitor the raw input signal.

Source: Beckhoff TwinSAFE Logic FB
View Official PDF