PLC Programming

5 - Editors in CoDeSys
setting is displayed for the steps in the SFC editor. On the right, next to the step, either the comment
or the time setting will appear.
If the maximum time is exceeded, SFC flags are set which the user can query.
The example shows a step whose execution should last at least two, and at the most, ten seconds. In
Online mode, there is, in addition to these two times, a display of how long the step has already been
active.
'Extras' 'Time Overview'
With this command you can open a window in which you can edit the time settings of your SFC steps:
Time Boundaries Overview for a SFC POU
'Extras' 'Options'
In the time boundaries overview, all steps of your SFC POU are displayed. If you have entered a time
boundary for a step, then the time boundary is displayed to the right of the step (first, the lower limit,
then the upper limit). You can also edit the time boundaries. To do so, click on the desired step in the
overview. The name of the step is then shown below in the window. Go to the Minimum Time or
Maximum Time field, and enter the desired time boundary there. If you close the window with OK,
then all of the changes will be stored.
In the example, steps 2 and 6 have a time boundary. Shift1 lasts at least two, and at most, ten
seconds. Shift2 lasts at least seven, and at most, eight seconds.
With this command you open a dialog box in which you can set different options for your SFC POU.
CoDeSys V2.3 5-33