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RS232 Codes
RS232 control is not necessary for operation but is a convenient way to control displays from a
computer at a distance. Most things you can do with the remote, you can do with RS232 commands.
Plus, you can send inquiries to the displays and find out the current settings and values.
1.
RS232 Command Format
Commands sent to the display have the following format:
XX YY ZZ
Where:
● "XX" is the command code.
● "YY" is an address byte. For this product, YY = "00".
● "ZZ" is the data byte, in hex. If ZZ = "ff", the command is a read command. Otherwise, the
command is a write command.
Responses from the display use the same format as commands. The response data is as follows:
● For commands that are in an invalid format or are unrecognized by the display, no response
will be sent by the display.
● For valid write commands, the display will respond with the same command data. Example
power on command:
[Command to display] ka 00 01
[Response from display] ka 00 01
● For valid read commands, the display will respond with the same command data but with
"ZZ" above replaced with the actual setting value. Example input source read command
when currently set to HDMI 1:
[Command to display] kb 00 ff
[Response from display] kb 00 09
Planar HB Series Huddle Board RS232 User Manual
020-1393-00A
RS232 Codes
Page | 4
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