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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.

Note

The order of the option characters in the command does not matter.

SCommand 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).

•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.

S 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:

SHelp option example:

IBRT --help<CR>

SResponse:

f_oq

•

•

Description: Input Brightness Adjust

Command Format: IBRT -i(input) -b(bright)

128 DCS-200 • User’s Guide