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DellTM 1800MP RS232 Protocol Pin Assignment
(Facing Projector)
RS232 Pin Assignment
RS232 Protocol
• Communication Settings
Connection settings Va lu e
Baud Rate: 19200
Data Bits: 8
Par ity No ne
Stop Bits 1
• Command types
To pop up the OSD menu and adjust the settings.
• Control command Syntax (From PC to Projector)
[H][AC][SoP][CRC][ID][SoM][COMMAND]
• Example: Power ON Command (Send low byte firstly)
--> 0xBE, 0xEF, 0x10, 0x05, 0x00, 0xC6, 0xFF, 0x11, 0x11, 0x01, 0x00, 0x01
Header "BE EF"
Address Code "10" ==> Fixed
Payload Size "05 00"==> From wMsgID to end
CRC "C6 FF" ==> If CRC value is "C6 (Low Byte) FF (High Byte)"
MsgID "11 11"
MsgSize "01 00"==> From command to end.
Command "01"==> "Power ON" command.
• Projector Response Message Table:
0x00: Success
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0x01: Invalid command (on the control command list but not valid. e.g. card reader
command while no card reader plug-in)
0x02: Error command (includes CRC error and unknown commands).
0x03: System Status - Projector ON (Normal Mode).
NACK: System Status - Projector OFF (Standby Mode).
Note: When the projector is in the standby mode, no acknowledgement (NACK)
response is sent by the projector.
• Projector Response Lamp Hour:
Byte0, Byte1, Byte2, Byte3
Byte0: 0x00 (Success)
Byte1: 0x2F (the header of lamp hour)
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Byte2: LSB (Hex)
Byte3: MSB (Hex)
Ex: 800 (3x256+2x16=800) hours --> 0x00, 0x2F, 0x20, 0x03
• Firmware version Response:
Firmware version: 4 Bytes ASCII Code: "V*.*"
V: Ve r si o n
*: 0-9
• Example: Version 1.5 --> "V1.5" --> 0x00, 0x30, 0x56, 0x31, 0x2E, 0x35 (Success,
header of firmware version, 4 Bytes ASCII Code: "V*.*")
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Control Commands List
Header
(WORD)
0xefbe 0x10 0x0005 0xffc6
Address
Code
(BYTE)
Size of the
payload
(WORD)
CRC16
for the
entire
packet
(WORD)
0xbfc7
0x7e07
0x3fc5
0xfe05
0xbe04
0x7fc4
0x3fc0
0xfe00
0xbe01
0x7fc1
0x3e03
0xffc3
0x7e02
0x3fca
0xfe0a
0xbe0b
0x7fcb
0x3e09
0x7e08
0x3e0c
0xffcc
0x3fcf
0xbe1f
0x7fdf
0xbfd9
0x7e19
0x3fdb
0xfe1b
0xbe1a
0x7fda
0x3e12
0x3ff6
0x7e46
MsG ID
(WORD)
0x1111 0x0001 0x01
MsG size
(WORD)
Command
code
(BYTE)
0x02
0x03
0x04
0x05
0x06
0x07
0x08
0x09
0x0A
0x0B
0x0C
0x0D
0x0F
0x10
0x11
0x12
0x13
0x14
0x17
0x18
0x19
0x1C
0x22
0x23
0x2A
0x2B
0x2C
0x2D
0x2E
0x2F
0x30
0x40
0xFF
Command
Description
Powe r
Menu
Up
Down
Left
Right
R-sync
Source
Vol ume +
Vol ume Zoom in
Zoom out
Mute
Hide
Video Mode
H. Keystone Up
H. Keystone Down
V. Ke y st o n e U p
V. Ke y st o n e D o wn
Aspect ratio (4:3/16:9)
Power OFF
Source-VGA-A
Source VGA-B
Source-S-Video
Source-Composite
ECO Mode ON
ECO Mode OFF
Auto Source ON
Auto Source OFF
Fact ory Re set
Lamp Hour
Firmware Version
Enter key
System Status
Information in this document is subject to change without notice.
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2006 Dell Inc. All rights reserved.
Reproduction in any manner whatsoever without the written permission of Dell Inc. is strictly
forbidden.
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Other trademarks and trade names may be used in this document to refer to either the entities
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