Cause : CB alarm- The following description refers to the 1st CBP. For other CBs or the TB see the operating instructions for the CB board.

The telegram traffic between the DP master and the CBP has been interrupted (e.g. cable break, bus cable pulled out or DP master powered down).

• Consequence: If P722 (P695) is not equal to zero, this will cause the fault message F082 to be tripped.