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Samsung RS232 Codes (RS232C)
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All codes sent are in HEX format.
(Sending the below commands as ASCII characters will not work, codes must be sent as HEX)

The model of displays that these codes work on are typically video wall or commercial style panels. The RS232 port is labeled "RS232C In"
These types of displays typically have an RS232C In and an RS232C Out port because they are intended to be daisy-chained together.

To control a Samsung Commercial display over RS232, press the Home button and navigate to ID Settings --> PC Connection Cable and choose RS232C cable. If you don't make that change, you will not be able to control the system over RS232.

The codes represented below are broadcast codes and will send the command to ALL displays if connected:

 

Command Code (HEX) Control System Representation
Power On AA 11 FE 01 01 11 \xAA\x11\xFE\x01\x01\x11
Power Off AA 11 FE 01 00 10 \xAA\x11\xFE\x01\x00\x10
Volume Up AA 62 FE 01 00 61 \xAA\x62\xFE\x01\x00\x61
Volume Down AA 62 FE 01 01 62 \xAA\x62\xFE\x01\x01\x62
Mute On AA 13 FE 01 01 13 \xAA\x13\xFE\x01\x01\x13
Mute Off AA 13 FE 01 00 12 \xAA\x13\xFE\x01\x00\x12
Select HDMI 1 AA 14 FE 01 21 34 \xAA\x14\xFE\x01\x21\x34
Select HDMI 2 AA 14 FE 01 23 36 \xAA\x14\xFE\x01\x23\x36
Select HDMI 3 AA 14 FE 01 31 44 \xAA\x14\xFE\x01\x31\x44
Info (Display) AA 17 FE 01 01 17 \xAA\x17\xFE\x01\x01\x17
Menu AA 34 FE 01 00 33 \xAA\x34\xFE\x01\x00\x33
Up AA C1 FE 01 06 C6 \xAA\xC1\xFE\x01\x06\xC6
Down AA C1 FE 01 86 46 \xAA\xC1\xFE\x01\x86\x46
Right AA C1 FE 01 46 06 \xAA\xC1\xFE\x01\x46\x06
Left AA C1 FE 01 46 06 \xAA\xC1\xFE\x01\x46\x06
Enter (OK) AA C1 FE 01 16 D6 \xAA\xC1\xFE\x01\x16\xD6
Return (Back) AA C1 FE 01 58 18 \xAA\xC1\xFE\x01\x58\x1B
Exit AA B2 FE 0A 01 00 00 40 09 04 \xAA\xB2\xFE\x0A\x01\x00\x00\x40\x09\04
Picture Size: Screen Fit AA C1 FE 01 B5 75 \xAA\xC1\xFE\x01\xB5\x75

 

For testing or demonstration purposes, a Docklight Scripting project file with the above commands is attached to this Knowledge Base article. The Docklight Scripting program is available for download here:
https://www.docklight.de/download/Docklight_Scripting.zip

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