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9
RS232
The Atlona AT-PROHD82M switcher can be controlled via the RS-232 serial control port to allow for interfacing
to a PC, or similar third party control system.
The serial communication parameters are 9600 baud, 8 bit no parity and 1 stop bit. This is often referred to
as 9600 8N1. When the unit recognizes a complete command it will perform the requested action. There is no
delimiter character required.
The unit does not send out a message when a value is changed from the front panel or by IR control. If the
switcher needs to be controlled in addition to the RS-232 control, you should regularly verify the unit’s status to
ensure the control system accurately reflects the current settings.
1. Protocol Commands
To switch Inputs to Outputs
SBI0XO0Y
– Where X is
,QSXW
Number (1-8) and Y is
2XWSXW
Number (1-2)
Unit will respond with:
SBUD0XOY
– Where X is Output Number (1-2) and Y is Input Number (1-8)
Example: Send Input 7 to Output 2
SBI07O02
– Sending Command
SBUD07O2
– Would be feedback command which switcher will send back to the control system to confirm the
input change. Command received.
Note: Turning the unit System Power Off over RS-232 will extinguish the LED channel display leaving only the
Power Switch LED on. The Video and Audio outputs will also mute. While the unit is turned off by RS0-232 it
will continue to accept and act upon switching commands. For example, if the unit is in the off mode (via RS-
232) and you send a command to switch an input to an output, that route will complete and the video and audio
will now appear on that channel only. The front panel LED channel display for that particular output will also
show the input selected (for that single output channel only).
The remaining LED’s will remain off and video and audio outputs muted. The unit will still return status
and change messages in response to commands sent while in Power Off state. A hard reset command
(SBALLRST) will return the unit to normal operation and also unlock the front panel.
Power OFF Command:
SBSYSMOF
Power ON Command:
SBSYSMON
Unit will respond with:
Unit is in Standby mode:
SBALOFAK
Unit is no longer in Standby mode:
SBALONAK
Example: Put unit in Standby (Soft Power)
SBSYSMOF
Switcher will have feedback with
SBALOFAK
RS 232 SERIAL COMMANDS