SFC Actions
A Sequential Function Chart (SFC) action is a child SFC sequence, started or terminated according to the change of the step activity signal. An SFC action can have the N (Non stored), S (Set), and R (Reset) qualifiers. This is the meaning of the action on an SFC child:
Action | Description |
|---|---|
N on a child | Starts the child sequence when the step becomes active and terminates the child sequence when the step becomes inactive. |
S on a child | Starts the child sequence when the step becomes active. |
R on a child | Stops the child sequence when the step becomes active. |
The SFC sequence specified as an action must be a child SFC program of the program currently being edited.
Example
(* SFC Program using SFC Action *)
The main SFC program is named Parent having one SFC child, called SeqMlx. The SFC programming of the parent SFC program is:
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