﻿After the bus voltage returns, the configured state is transferred to the "Forced position" communication object. When a forced position is activated, the output is immediately activated and interlocked accordingly by forced control after the bus voltage returns until a forced position is enabled via the KNX. The parameter "After bus voltage return" on the parameter page "Relay output... - VB... - General" is not evaluated for the affected output in this case.

*no forced position active*: The forced position is deactivated after bus voltage return. In this case, after bus voltage return the preset behaviour "After bus voltage return" on the parameter page "Relay outputs... - VB... - General" will be executed when the bus voltage returns.

*Forced position function ON, opening*. After bus voltage return, the forced position is activated and the venting louver/roof window opened. The output concerned is interlocked by forced control until an enable signal is received via the KNX. The behaviour "After bus voltage returns" set on the parameter page "Relay outputs... - VB... - General" is not evaluated for the affected output in this case.

*Forced position function ON, closing*. After bus voltage return, the forced position is activated and the venting louver/roof window closed. The output concerned is interlocked by forced control until an enable signal is received via the KNX. The behaviour "After bus voltage returns" set on the parameter page "Relay outputs... - VB... - General" is not evaluated for the affected output in this case.

*State of the forced position before bus voltage failure*: The forced position state last selected and internally stored before bus voltage failure will be tracked after bus voltage return. An ETS programming operation deletes the stored state (reaction in that case same as with "no forced position active"). If the tracked state corresponds to "No forced position active", the behaviour "After bus voltage return " on the parameter page Relay outputs... - VB... - General" will be executed when the bus voltage returns.
