Section 1: Introduction
CP2000-SB User Manual
3-53
020-100162-06 Rev. 1 (03-2014)
DATA:
The value for a given projector parameter, such as ON or OFF, appears in ASCII-decimal format
directly after the request/reply symbol. Unless you add an optional space after the symbol (i.e., before the data)
in a set message, data immediately follows the request/reply symbol without a space. Other details about data:
• All values returned by the projector (
reply
messages) have a fixed length of either 3 or 5 characters
regardless of the actual value-the value is padded with leading zeros as needed.
• Data in set messages does not require padding.
• For any given parameter, data length is always the same. E.g., the
picture mute
value, which is either on
(
1
) or off (
0
) is always 3-digits: 001 or 000.
• Within one message, multiple parameters of data must be separated by one
space
character.
• Data pertaining to a specific source other than the current source is preceded by: the letter
S
, the source
number (i.e., channel), and a space. This is similar to an extra parameter
P0
.
• Text parameters such as channel names are enclosed in double quotes following the data, as in
Name.
TEXT PARAMETERS:
Most data is simply a numerical value, however some messages also require text.
For example, a
channel naming
message typically includes a text-based name after the channel number-
enclose this text in double quotation marks, as in "
Tilt the Wagon
". Use all characters as desired except
for the following special characters-these require a 2-character combination as shown in
Table 3.21
:
Table 3.21 Special Characters for Text
3.6.3 Sample Messages and Their Meaning
Table 3.22 Sample Messages
If you want this…
Enter this…
Description
\
\\
Backslash
"
\"
Quote
(
\(
Left bracket
)
\)
Right bracket
0x0A
\n
New line - if the text can be displayed on more than
one line, this will cause the next character to be dis-
played at the start of the line that follows the current
one.
0x1B
\x
control code (ESC)
Desired Action
Message
Description
Get current Chan #
(CHA?)
Request by controller for current channel #
Chan # reply from proj.
(CHA!101)
Reply from proj. that current channel is 101
Set Chan #
(CHA 101)
Switch to the first channel on the TPC
Get picture mute status
(PMT?)
Request by controller for picture mute status
Picture mute reply from proj.
(PMT!000)
Reply from proj. that picture is mute is off.
Set picture mute
(PMT 1)
Turn the picture mute on (blank the image)
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