Samsung OHA 75" 4K Outdoor Commercial Display - Manual (Page 31)

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Wall_SNo: Product Number code assigned to the product
10x10 Video Wall Model : ( 1 ~ 100)
Set Number Data
1 0x01
2 0x02
... ...
99 0x63
100 0x64
• Ack
Header Command ID Data length Ack/Nak r-CMD Val1 Val2 Checksum
0xAA 0xFF 4 'A' 0x89 Wall_Div Wall_SNo
• Nak
Header Command ID Data length Ack/Nak r-CMD Val1 Checksum
0xAA 0xFF 3 'N' 0x89 ERR
"ERR": A code showing what error has occurred