Bowens XMS Studio Flash User Manual page 18

User Options
18
Power Switch State (PS)
This option allows the last state of the Standby/Power switch to be remembered if
power to the unit is suddenly lost. Set this option to 0 (Off) to always power up in Standby
or 1 (On) to remember the last Power Switch state.
When set to on and power is lost and then restored, the unit will continue to operate in
the same state that it was in before the power was lost. This feature may be useful if the
unit is mounted in an inaccessible position, for instance on a HiGlide ceiling track system,
where the mains power may be switched on and off remotely from the unit.
NOTE: If the unit was previously in the 'Head Off' state set via the remote control unit
then this particular state will not be restored.
Since there can be no indication as to which state the unit will be in before power
is applied it is recommended that this option is left switched off unless absolutely
necessary for the reason given above.
Set Defaults (dF)
This option allows all options to be set to their default values. Set this option to 1 (On) to
clear all previous settings and replace them with the default values when the options
mode is exited.