Rockwell-automation Logix5000 Controllers Sequential Function Charts P Manuel d'utilisateur Page 12

  • Télécharger
  • Ajouter à mon manuel
  • Imprimer
  • Page
    / 88
  • Table des matières
  • MARQUE LIVRES
  • Noté. / 5. Basé sur avis des utilisateurs
Vue de la page 11
Chapter 1 Design a sequential function chart
A sequential function chart (SFC) is similar to a flowchart. It uses steps and
transitions to perform specific operations or actions. This example shows the
elements of an SFC. The SFC continues on the following page.
A step represents a major function of y
our process. It contains the actions that occur at a particular time, phase,
or station.
An action is one of the functions that a step performs.
A transition is the TRUE or FALSE condition that tells the SFC when to go to the next step.
A qualifier determines when an action starts and stops.
A simultaneous branch executes more than 1 step at the same time.
JSR instruction calls a subroutine.
What is a sequential
function chart?
12 Rockwell Automation Publication 1756-PM006F-EN-P - October 2014
Vue de la page 11
1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 87 88

Commentaires sur ces manuels

Pas de commentaire