Terminal Configuration Changed (TwinCAT)

What does State Variable Bit 1 mean?

The K-bus State variable in TwinCAT has Bit 1 set, indicating that the physical terminal configuration has changed since the TwinCAT system started. This can lead to process image inconsistencies.

• K-bus terminal configuration has been changed since last startup.
• New terminal added or removed from the bus.
• Terminal parameter modification not synchronized.
• Mismatch between actual hardware and configured terminal layout.

Click steps to track your progress.

1. 1

   Verify the current physical Bus Terminal configuration on the K-bus and compare it against the expected configuration in the TwinCAT project.

2. 2

   If the change was intentional, restart the TwinCAT runtime or re-initialize the I/O system to synchronize the configuration.