Fairlight CVI, User Manual

Page: 211 / 283

R S 2 3 2 C PO RT CO NTRO L
Save Preset
Command: SPnn
A two-digit decimal para meter specifies the User-defined Preset
to be transmitted. The 25 bytes of data are transmitted as 50
ASCII characters. The 25 bytes conta in all the information
associated with the selected Preset: menu selections. slider settings
and push-buttons. This information is in a packed format.
detailed under
Preset Data Format
at the end of this section.
Load Preset
Command: LPnn
The specified Preset is loaded with data transmitted from the
external computer. This can be used in conjunction with the
Save
Preset
function. as it allows previously saved Presets to be loaded
to augment the 1 00 User Presets stored in the machine. It will
often be desirable to save and load certai n Presets in conjunction
with a Sequence. 50 characters are expected to complete one
Preset. The packed format of the Preset data is given under
PRESET DATA FORMAT at the end of this section.
After a Preset has been loaded in this fashion it can be selected
using the
PS
command described above. This will activate the
selections contained in the loaded Preset data.
WA R N I N G ! !
The CVI Presets are used directly by the
Central Processing Unit. If out-of-range values or data errors
are received the CVI will probably crash when that Preset is
selected. destroying all the Presets. the Sequencer program
and the image. The only remedy is then to turn the CVI
off
then
o n
again. and then to Reset All Presets. The CVI does
not
check for out-of-range Preset da ta. Verify the reliability
of this function with your computer
be/ore
you use it in any
critical applications. Also take extreme care i f you modify
P reset data. See PRESET
DATA FORMAT.
Save I mage
Command: SI
xxx
yyy
mm 111m
The four parameters specify an
absolute
recta ngle of pixels in
the field store. These pixels are tra nsmitted from the CVI. using
the format described below.
The parameters range in value from 000 to 255. The first two
parameters set the
absolute
(i.c. not pan-rela tive) posi tion of the
top left corner of the rectangle.
xxx
is horizontal position.
yyy
is
vertical position. The third and fourth parameters specify the
number of pixels to be saved i n the horizontal and vertical
directions. respectively.
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SOFTWARE UPDATE