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2-6
Section
Lamps
103
2-6
Lamps
Lamps are graphics that change in accordance with the status of a set bit. Lamps
are classified into the two major categories indicated below.
Normal (Standard) Lamps
Normal (standard) lamps change the display status (OFF/ON/flashing) of fixed
display graphics.
ON
ON
ON status
Host
OFF status
Image/Library Lamps
Image/library lamps display different graphics (image/library data) in the ON and
OFF statuses.
ON status
Host
OFF status
ON
Lamps are arranged and set on the screen when creating screen data with the
Support Tool.
Restrictions
•
A maximum of 256 lamps can be registered for one screen. For an overlapping
screen comprising 8 child screens, the maximum is 1024.
There is no restriction on the number of lamps that can be registered for one
screen data file: any number can be registered as long as the data file ca-
pacity is not exceeded. However, if a large number of elements are regis-
tered, check that the restrictions on element display are complied with by
referring to Display Restrictions (page 425).
•
When polygons are used as the display graphics for normal (standard) lamps,
one polygon can be given up to 255 vertices.
•
Image/library lamps are subject to the maximum simultaneous display restric-
tion imposed on image and library data. This means that a maximum total of
256 image/library lamps and image and library data can be displayed on one
screen. For an overlapping screen comprising 8 child screens, the maximum is
1024.
•
When library data is displayed with an image/library lamp, if the library data
projects outside the screen area, nothing is displayed. Usually, the Support
Tool ensures that the data does not project out of the screen area.
•
If no data is registered for the specified image/library lamp code, nothing will be
displayed.
•
Among lamps, the display order is determined by the order in which the lamps
were created. However, this order among lamps can be changed with the Sup-
port Tool.
The common attributes vary widely according to the type of lamp, therefore they
are described separately for each case.
Function Outline
Common Attributes
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Summary of Contents for NT21 Series
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