BenQ LU935 User manual

LU935
Projector RS232 Command Control
Installation Guide

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Table of Contents
Introduction .............................................................................................................................................................................. 3
Wire arrangement...................................................................................................................................................... 3
RS232 pin assignment.............................................................................................................................................. 3
Connections and communication settings....................................................................................................... 4
RS232 serial port with a crossover cable....................................................................................................4
Settings..................................................................................................................................................................... 4
RS232 via LAN...................................................................................................................................................................7
Settings......................................................................................................................................................................7
RS232 via HDBaseT ..................................................................................................................................................... 8
Settings..................................................................................................................................................................... 8
Command table...................................................................................................................................................................10
FAQ Video.................................................................................................................................................................................24

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Introduction
The document describes how to control your BenQ projector via RS232 from a computer.
Follow the procedures to complete the connection and settings first, and refer to the
command table for RS232 commands.
Available functions and commands vary by model. Check the specifications and user manual of
the purchased projector for product functions.
Wire arrangement
Wire Arrangement
P1
Color
P2
1
Black
1
2
Brown
3
3
Red
2
4
Orange
4
5
Yellow
5
6
Green
6
7
Blue
7
8
Purple
8
9
Gray
9
Case
Drain wire
Case
RS232 pin assignment
Pin
Description
Pin
Description
1
NC
2
RXD
3
TXD
4
NC
5
GND
6
NC
7
RTS
8
CTS
9
NC

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Connections and communication settings
Choose one of the connections and set up properly before RS232 control.
RS232 serial port with a crossover cable
Settings
On-screen images in this document are for reference only. The screens may vary depending on
your Operating System, I/O ports used for connection, and the specifications of the connected
projector.
PC or laptop
Communication cable (crossover)
D-Sub 9 pin (female)
D-Sub 9 pin (male) on a projector

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1. Determine the COM Port name used for the RS232 communications in Device
Manager.
2. Choose Serial and the corresponding COM port as the communication port. In this
given example, COM6 is selected.

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3. Finish Serial port setup.
Baud rate
9600
Data length
8 bit
Parity check
None
Stop bit
1 bit
Flow control
None

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RS232 via LAN
Settings
1. Find the Wired LAN IP address of the connected projector from the OSD menu and
make sure the projector and the computer are within the same network.
2. Input 8000 in the TCP port # field.
PC or laptop
RJ45 port on a projector
LAN cable

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RS232 via HDBaseT
Settings
1. Determine the COM Port name used for the RS232 communications in Device
Manager.
2. Choose Serial and the corresponding COM port as the communication port. In this
given example, COM6 is selected.
PC or laptop
HDBaseT compatible device
D-Sub 9 pin
RJ45
RJ45 port on a projector
LAN cable
D-Sub 9 pin

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3. Finish Serial port setup.
Baud rate
9600
Data length
8 bit
Parity check
None
Stop bit
1 bit
Flow control
None

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RS-232 Command Code
1. Each input character will be echoed and All the echo text will be same with the
command you execute except query command
2. When give “Enter”(ASCII 13), it will echo 3E,00. It means projector is ready to accept
RS-232 command.
3. If no any command, it should echo 0D,0A,00 after 5 seconds.(5 sec time out)
4. If the command format is illegal, it will echo “Illegal format”.
5. If the command format is correct, but it is not valid for this model, it will echo
“Unsupported item”.
6. If the command format is correct, but can’t be execute in some condition, it will echo
“Block item”.
Note:1.Item 5 and item 6 is not support at power saving mode (standby power <0.5W).
7. Each input upper case and lower case character should be action.
8. all of status command and power on command should be action when low power
mode(<0.5W)
9. Support volume bar display
10. If system have Lan over RS232 function, The RS232 command can be support, and all
of the LAN over RS232 function behavior follow RS232
11. The response string will be in upper case
12. About inquiry command, please follow current status to Echo.
(Each input upper case and lower case character should be action)
Function
Type
Operation
ASCII
Suppor
t
Power
Write
Power On
<CR>*pow=on#<CR>
YES
Write
Power Off
<CR>*pow=off#<CR>
YES
Read
Power Status
<CR>*pow=?#<CR>
YES
Source Selection
Write
COMPUTER/YPbPr
<CR>*sour=RGB#<CR>
YES
Write
COMPUTER 2/YPbPr2
<CR>*sour=RGB2#<CR>
NO
Write
COMPUTER 3/YPbPr3
<CR>*sour=RGB3#<CR>
NO
Write
Component
<CR>*sour=ypbr#<CR>
NO
Write
Component2
<CR>*sour=ypbr2#<CR>
NO
Write
DVI-A
<CR>*sour=dviA#<CR>
NO
Write
DVI-D
<CR>*sour=dvid#<CR>
NO
Write
HDMI(MHL)
<CR>*sour=hdmi#<CR>
YES
Write
HDMI 2(MHL2)
<CR>*sour=hdmi2#<CR>
YES
Write
HDMI 3
<CR>*sour=hdmi3#<CR>
NO