432
Halt Changes status of subchart dummy step from halt to inactive, and makes inac-
tive all of the steps in the subchart that were active at the time the instruction was
executed. Actions will be reset. Actions with the optional hold action qualifier,
however, will not be reset. In addition, execution will be continued for actions
with S-group AQs. Step timers will continue.
Inactive Step status does not change.
5-37-6 RESET STEP: SOFF(215)
(215)
SOFF N
N: Step number ST
Operand Data AreaLadder Symbol
Variations
j SOFF(215)
Description When the execution condition is OFF, SOFF(215) is not executed. When the
execution condition is ON, SOFF(215) places a designated step or subchart in-
active and resets all of the actions in the step.
SOFF(215) does not necessarily result in transfer of active status from one step
to another. When SOFF(215) is executed, it simply makes the designated step
or subchart inactive.
Note SOFF(215) cannot be executed from any interrupt program other than a power-
on interrupt program. In addition, SE(214) cannot be executed for steps in any
interrupt program (including a power-on interrupt program).
Normal Steps Status
The specific results of executing SOFF(215) for steps in each step status are
described below for normal steps inside or outside of subcharts.
Execute Changes the step status from execute to inactive. Execution of all actions (in-
cluding actions with the optional hold action qualifier and actions with S-group
AQs) will be stopped and the actions will be reset. The step timer will also be
stopped. If SOFF(215) is executed on steps in a subchart, step execution will be
stopped directly after execution of the instruction.
Pause Changes the step status from pause to inactive. Execution of all actions (includ-
ing actions with the optional hold action qualifier and actions with S-group AQs)
will be stopped and the actions will be reset. The step timer will also be stopped.
Halt Changes the step status from halt to inactive. All actions (including actions with
the optional hold action qualifier and actions with S-group AQs) will be stopped
and reset. The step timer will be stopped.
Inactive Execution of actions with S-group AQs will be stopped and the actions will be
reset. Actions with the optional hold action qualifier will be reset. The step timer
will also be stopped.
Subchart Dummy Steps
The specific results of executing SOFF(215) for steps in each step status are
described below for dummy steps controlling subcharts.
Execute Changes the status of the subchart dummy step from execute to inactive and
places all of the steps in the subchart inactive. Execution of all actions (including
actions with the optional hold action qualifier and actions with S-group AQs) will
be stopped and the actions will be reset. Step timers will also be stopped. If
SOFF(215) is executed on steps in a subchart, step execution will be stopped
directly after execution of the instruction.
SFC Control Instructions Section 5-37
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