Rs-232 cable specifications, Rs-232 transmission specifications, Rs-232 communication format – AVer PL50 user manual User Manual
Page 38: Rs-232 send command table
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Make sure the RS-232 cable matches the cable specification design.
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Start bit
：1 bit
Data bit
：8 bit
Stop bit
：1 bit
Parity bit
：None
X parameter
：None
Baud rate (Communication speed)
：9600bps
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Send Device Code(1 Byte)
: 0x52
Type Code(1 Byte)
: 0x0B
DataLength Code(1 Byte)
: 0x03
Data Code(1 Byte)
: See the Command Table for reference.
Data Code(2 Byte)
: See the Command Table for reference.
Data Code(3 Byte)
: See the Command Table for reference.
Receive Device Code(1 Byte) : 0x53
CheckSum Code(1 Byte)
: See the Command Table for reference.
Format
: Start + Type + DataLength + Data + CheckSum
Example
: 0x52 + 0x0B + 0x03+ 0x01 + 0x00 + 0x00 + 0x53 + 0x5A
(Command Power Off)
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Send Format︰0x52 + 0x0B + 0x03 + Data[0] + Data[1] + Data[2] + 0x53 + CheckSum*
1
Receive Format︰0x53 + 0x00 + 0x02+ *2 + *3 + 0x52 + CheckSum*
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*1 ：CheckSum = 0x0B xor 0x03 xor Data[0] xor Data[1] xor Data[2] xor 0x53
*2 ：Receive data ok : 0x0B, ID error: 0x01, CheckSum error: 0x02, Not Command : 0x03,
Function fail = 0x04
*3 ：Return 0x00
*4 ：CheckSum = 0x00 xor 0x02 xor *2 xor *3 xor 0x52