Use the /SYS keyswitch_state property to control the position of the virtual keyswitch.
-> set /SYS keyswitch_state=value
where value can be:
normal – The server can power itself on and start the boot process (the default).
standby – Powers off host, disables power on.
diag – Host power on is allowed, it overrides the settings of /HOST/diag target, resulting in Max POST being executed.
locked – Host power on is allowed, however, you are prohibited from updating flash devices or setting /HOST send_break_action=break.