Toshiba V Series User Manual page 58

Chapter 1 Overview
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(6) Setting time chart
In a manual operation to make preferential display of a bar graph data from the L1,
the display data does not involve that part of the button operation from the
transmission of operation data from the LD unit to its reception in the first display data
transmission cycle so that the bar graph appears as if there was a decrease in the
button operation. Then, in the display data cycle following the end of the button
operation, the bar graph appears as if there was a sudden increase in the operation
corresponding to that part of it not reflected first. There is no problem with the final
quantity of operation, but bar graph display must be made equivalent to button
operation so that the bar graph will show a smooth change.
Therefore, whether there is a button operation is checked in the LD unit from the
transmission of operation data to the L1 to the reception of display data. If there is a
button operation, bar graph display by it has priority; if there is no button operation,
bar graph display by display data has priority.
(This applies to mode operation, SV operation, and MV operation.)
[Bar graph display by button operation]
Quantity of
operation
Bar graph display
(Display data has priority)
If there is a button operation in
this area, operation data is
shown in bar graph.
Display data transmission cycle
Operation data transmission cycle
Main scan cycle
Figure 1-24 Bar Graph Display by Operation
Button operation
MV
model 1000 Loop Controller L1 User's Manual - Basic Hardware
SV
Operation scan cycle
Time