Product : ISaGRAF V3
Date : 11-September-1996
File : Sfcthrd.SFC parallel steps - actions blocks.htm
Subject : SFC parallel steps - actions blocks
Keywords: SFC - parallel steps - action blocks - recursivity
SFC steps of one ISaGRAF application are not executed in
Although two steps are active at the same time, their
respective action blocks are operated one after the other
within one target sample (PLC loop).
This implies there is no problem of re-entrance on called
functions or sub-programs.
An ISaGRAF function or sub-program is not re-entrant,
and cannot include a call to itself.
Recursive calls are not supported by the ISaGRAF target
All local variables of a sub-program are stored in fixed
memory (static life time).
Copyright © 1996-2009 ICS Triplex ISaGRAF Inc. All rights reserved.