1756-PM003H-EN-E, SFC and ST Programming Languages ...

Design a Sequential Function Chart 4-37
This figure shows the use of a stored action.
S
Action_Name
step that starts the action
action that you want to
execute for more than
one step
more steps
R
Action_Name
step that stops the action
same name as the stored
action
When the SFC leaves the step that stores the action, RSLogix 5000
software continues to show the stored action as active. (By default, a
green border displays around the action.) This lets you know that the
SFC is executing the logic of that action.
To use a stored action, follow these guidelines:
• The Reset action only turns off the stored action. It does not
automatically turn off the devices of the action. To turn off the
device, follow the Reset action with another action that turns off
the device. Or use the Automatic reset option described on
page 4-33.
• Before the SFC reaches a stop element, reset any stored actions
that you do not want to execute at the stop. An active stored
action remains active even if the SFC reaches a stop.
• Use caution when you jump in between a step that stores an
action and a step that resets the action. Once you reset an
action, it only starts when you execute the step that stores the
action.
Publication 1756-PM003H-EN-E (excerpt from 1756-PM001H-EN-P) - August 2005