InValue Expired (Positive)

What does 0x40C9 mean?

The input value (InValue) has expired, and its current state is above zero. This suggests that the input signal has either become invalid or has risen above its expected range, leading to a safety state. The fault provides the FB instance, the current InValue, and the MaxAllowedValue for detailed diagnosis.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Review the configured maximum allowed value ('MaxAllowedValue') in the FB Envelope parameters; ensure it is appropriate for the application.

2. 4

   Use TwinCAT diagnostics to observe the 'InValue' in real-time and correlate it with the 'MaxAllowedValue'.