Toshiba T2N - Manual (Page 236)

5. Programming Language
User's manual 223
(5) The jump destination of a SFC jump may be either in the upward
direction or in the downward direction, or it may be in another
SFC program. Also, it is possible to jump to the outside from
within a branch.
Since a SFC jump can be very freely used in this way, take
thorough precautions so that the SFC logic will not become
abnornal (so that multiple unrelated steps in a series of SFC will
not become active) through jumping.
A SFC jump is always positioned immediately after a step. Also,
although basically a SFC label is positioned immediately after a
transition, it is positioned between the convergence line and the
step in the case of a sequence selection (convergence).
(6) The states (active/inactive) of SFC steps are not power-cut
retained.
When starting-up, all steps become inactive.
(7) The output of an SFC step can be controlled by sandwiching the
SFC program block by ladder diagram master control (MCS/
MCR).
When the input of MCS is OFF, the power rail of the action
program corresponding to the active step also becomes OFF.
However, in the state, step transition is carried out.