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Commands and responses
To access display information or to adjust display settings using the room control system, send a
command after the command prompt (>), send a carriage return character or press ENTER, and then
wait for the response from the display. Responses are preceded by a carriage return character (<CR>)
and line feed character (<LF>) and then followed by a carriage return character (<CR>) and line feed
character (<LF>). If no command prompt is present, send a carriage return character to the display. If
the display is ready to receive commands, it will show a command prompt (>) when the carriage return
is received. See the example below.
Correct
>get volume
volume=55
>
Notes
l
Use ASCII formatted commands.
l
Commands aren’t case-sensitive and extra spacing is ignored.
l
Review each entry carefully before sending a command to the display.
l
Don’t send another command until you receive the response and the next command prompt (>).
If no command prompt is present, send a carriage return character (<CR>) to the display. If the
display is ready to receive commands, it will show a command prompt after receiving the
carriage return.
To retrieve a setting’s current value
Use a get command.
This example shows how to get the volume:
>get volume
volume=55
>
Appendix A Managing the display using RS-232
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