West Control Solutions KS98-1 - Manual (Page 60)

II-3.2 Menu ‘Edit’
Timing
This command calls up the timing dialogue in the normal view. This dialogue can be used for determination of the time
slot assignment for each function block. Time slot assignment can be done also from the parameter dialogue
(r Fig.: 59). In the survey, a handling simulation which indicates the order in which the function blocks are calculated
is called up.
The timing dialogue shall indicate the time consumed by the
function blocks in the time slots, as well as the handling sequen-
ce. Therefore, two different time slot selection functions are avai-
lable. The timing sequence is displayed in the bottommost line,
whilst the individual time slots are displayed at the top. If a scan-
ning time of a time time slot is selected, all function blocks which
are calculated in this time slot part are displayed in the left box.
Thereby, the order corresponds to the timing sequence.
The right box contains all function blocks which are not allocated
to a time slot so far.
If a function block is selected, it can be shifted into this time slot
by mouse clicking on the relevant field. Clicking outside a time
slot will remove it from a time group without re-allocating it.
If several function blocks are to be moved simultaneously, they
can be selected by means of or with the left mouse key. As default, the engineering tool assigns the newly placed
function blocks to the time slot with 100 ms scanning time. The total of
calculation times of all function blocks per time slot must not exceed 100%.
A calculation time of a time slot exceeding 100% is displayed by a colour
change (red) in the timing dialogue (see Fig.:58 ).
In this case, the function block repartition must be changed.
The survey display shows a simulation that indicates in which sequence the function blocks are calcu -
lated. The sequence is either shown automatically, or is defined individually by the user via the keys v
(= forwards) and r (= backwards).
Menu reference to the engineering tool 9499-040-82711
II-60 Menu ‘Edit’
Fig.: 57
Fig.: 58