Barco DCS-200, Руководство пользователя

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128 DCS-200 • User’s Guide
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Command Protocol
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The DCS-200’s command protocol is compatible with GNU getopt parsing. Every
parameter of the command has an option character associated with it. A
<CR> carriage
return ( ASCII 13 ) terminates the command.
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Command example:
ITYPE -i 2 -t 1<CR>
Or
ITYPE -t 1 -i 2<CR>
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A command response is sent after each command is processed. This response consists of
the command, followed by the error code, a line feed
<LF> and a special termination
character ( \x4 ).
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When a command is successful, the error code is a 0 ( eERR_OK ), or some
positive value.
•
When a command is not successful, the error code is a negative value. A
preliminary list of the error codes is included. Refer to the “
Error Codes ” section
on page 130 for details.
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Command response example:
ITYPE -e 0<LF>
</x4>
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Query type options are available for the commands. The order of precedence for
processing query option arguments is help (
--help ), query ( -? ), and list ( --list ). If more than
one query option is sent in a command, the option with the highest precedence is
processed, and any others are ignored.
Help Query — Commands have a “ help ” query option associated with them, ( --help ). This
query lists all option flags and parameters for the command in the following format:
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Help option example:
IBRT --help<CR>
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Response:
f_oq
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Description : Input Brightness Adjust
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Command Format : IBRT -i(input) -b(bright)
Note The order of the option characters in the command does not
matter.