Dell W3706MH User Manual
RS232 Command Guide
for W3202MH/W3706MH DAO
1. Introduction
W3202MH and W3706MH are designed with control by wire capability via RS232. This
document describes the RS232 command protocol and command list.
2. RS232 Protocol
2.1 Communication Settings
Connection Settings Value
Baud Rate 19200
Data Bits 8
Par it y N on e
Stop Bits 1
RS232 pin out DB-9 pin
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NOTE:
DELL generally use common RS232 connector,So you just plug in connector from PC to DTV.
RS 232 Command Guide 1
2.2 Protocol structure
Command structure is used to pop up the OSD menu and adjust the settings. The control
command syntax(From PC to DTV) is
16bit 8bit 16bit 16bit 16bit 16bit 8bit
wID eType wPayloadSize wCRCPacket wMsgID wMsgSize Byte
EF BE 010 0003 XX/XX 1111 0001 XX
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Make sure that All value is Hex
.
• Header -> Fixed like wID – EFBE.
• EType –> Fixed like 010.
• wPayloadSize –>Fixed like 0003.
• wCRCPacker – value depending on data sent.
• wMsgID –>Fixed 1111.
• Byte – predefined command. (See section 4. Command List)
2.3 Status code
RETURN VALUE REMARKS
SUCCESS 0X00 If success
INVAILDID 0X15 If failed
INVAILDTYPE 0X15 If failed
INVAILDPAYLOAD 0X01 If failed
INVAILDCRC 0X15 If failed
INVAILDMSGID 0X01 If failed
INVAILDMSGSIZE 0X01 If failed
INVAILDBYTE 0X01 If failed
2 RS 232 Command Guide
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