1
MODEL
UD740U
Controlling the projector using a personal computer
This projector can be controlled by connecting a personal computer with RS-232C terminal.
PC-controllable functions:
Turning the power ON or OFF
Changing input signals
Inputting commands by pressing the buttons on the control panel and remote control
Menu setting
Connection
Important:
Connect the computer with the projector on a one-to-one basis.
Make sure that your computer and projector are turned off before connection.
Boot up the computer first, and then plug the power cord of the projector.
(If you do not follow this instruction, the Com port may not function.)
Adapters may be necessary depending on the PC connected to this projector. Contact your dealer for details.
1. Interface
1.1 Pin assignment of SERIAL terminal (D-SUB 9-pin)
Pin Description Pin Description
1 NC 2 RXD
3 TXD 4 NC
5 GND 6 NC
7 RTS 8 CTS
9 NC
1.2 Communications format
PROTOCOL RS-232C
BAUD RATE 9600 [bps]
DATA LENGTH 8 [bits]
PARITY BIT NONE
STOP BIT 1 [bit]
FLOW CONTROL NONE
This projector uses RXD, TXD and GND lines for RS-232C control.
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2. Control command configuration
The command consists of the address code, function code, data code, ACK/NAK, and end code. The length of the
command varies among the functions.
Address code Function code Data code ACK/NAK End code
ASCII ‘30h’ ‘30h’ Function Data ‘3Ah’ ‘4Eh’ ‘0Dh’
Character 00 Function Data :N
[Address code] Fixed to 00. (‘30h’ ‘30h’ in the ASCII code)
[Function code] Code unique to each control operation.
[Data code] Data (value) unique to each control operation (Not always indicated.)
[ACK/NAK] Code indicating the NAK return as described below
Fixed to :N (‘3Ah’ ‘3Eh’ in the ASCII code. Not added to ACK.)
[End code] Fixed to . (‘0Dh’ in the ASCII code)
3. Control sequence
Computer Projector
1
2
3
4
Send the command from the personal
1
computer to the projector.
The projector will send a return
command after it receives an end code.
2
The personal computer checks the
command and confirms if the sent
3
command has been received or not.
Use the check command to see if the
projector has executed the command.
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Sequence Note
If the projector does not receive commands
normally, that is, if the projector is not connected
physically or unable to receive commands, it does
not send out a return command.
The projector sends out a return command within
one second at the latest.
When the received command cannot be executed,
NAK is returned (as described below).
This projector sends various codes other than the
return code. When having a control sequence by
RS-232C, reject other codes from the personal
computer.
NAK return
In the following cases, the projector returns the command with “:N” added.
(1) Though the command sent from the computer is received by the projector successfully, it cannot be
executed because the projector is in the operation prohibition state.
(2) The data length of the sent command is incorrect or the command is invalid.
When a command is sent out during the following operations, it may not be executed.
(1) During signal switching
(2) In the process of the auto position
(3) After the power is turned on.
The projector receives no commands for about 20 seconds (or for 2 minutes at the longest if the lamp does
not light up promptly as the life is expiring). In this case, the projector returns the received command with
NAK added.
The return command is sent out within 1 second at the latest.
When sending commands successively, wait to receive the return command of the current command before
sending a next command.
The projector may not receive a command when the splash screen is being displayed immediately after turning
on the power. Use command “00r10” to cancel the splash screen.
While using the LAN terminals, the LAN functions take precedence.
For the LAN terminals, the same commands as those for connecting with the TCP/IP (port number 63007) are
available. Note, however, that the response becomes slightly slower than when using the RS-232C terminals.
For the use of LAN terminals, see page 10.
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[Example 1] Turning ON the power. (Values enclosed in quotation marks are ASCII codes.):
Command sent from the PC
‘30’ ‘30’ ‘21’ ‘0D’
00!
‘30’ ‘30’ ‘21’ ‘
00!
Status code returned
from the projector
0D’
Description
Command for POWER ON
Command receipt confirmation
(Command echo back)
[Example 2] Selecting VIDEO as the input signal during auto positioning (Values enclosed in quotation marks are
ASCII codes.):
Command sent from the PC
‘30’ ‘30’ ‘5F’ ‘76’ ‘31’
00_v1
‘30’ ‘30’ ‘5F’ ‘76’ ‘31’ ‘3A’ ‘4E’
00_v1:N
Status code returned
from the projector
Description
(During auto positioning)
Command for selecting VIDEO as the
input signal is sent out.
The command is received by the
projector but cannot be executed.
(NAK return)
The flowchart on the next page shows the recommended operating sequence for your reference to create a
program.
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［RS-232C control flowchart］
Check the following.
During password lock
Check the following.
START
Sending out command
No NAK returned
Command is sent successfully.
Command is executed successfully.
Checking execution of
command (sending out
check command)
OK
END
Awaiting response
from projector
NAK returned
Command is sent successfully.
Command execution fails.
Check that the function code is correct.
Check that the data code is correct.
Check that the projector is able to issue
NG
the return command.
→Check the projector’s operation using
the 00vST command.
Note: In the following cases, NAK is
returned even when the projector is
in normal condition.
Immediately after the power is
turned on (about 20 seconds to 2
minutes)
During input switching
During auto positioning
No response for
1 second or longer
Command sending fails.
Check that the command begins
with “00”.
The projector is not supplied with
AC power.
→Check that AC power cord is
connected.
→Turn on the power. (Turn on the
circuit breaker or main switch.)
Not connected with the projector.
→Check that the RS-232C cable is
connected.
→Check the RS-232C cable for
electrical discontinuity.
［Method of checking state of projector］
To normal operation
[Compatibility with the former models]
To use the RS-232C commands designed for the former models of Mitsubishi projector, by inputting
“00COMMAND0”, the projector responds in the same way as the former models. (No NAK is returned.)
(For the recommended procedure to use the former command systems, see “Controlling the projector using a
personal computer” for FL7000U.)
Changing the RS-232C command system COMMAND 43h 4Fh 4Dh 4Dh 41h
0-3
Enter password.
Send out “00PASS****”.
ITEM
Sending “00vST”
Checking response to “00vST”
Checking response to “00vST”
6 5
Character ASCII
4
Projector is functioning.
Function
4Eh 44h
Projector error
Send out “00vER” to check error details.
Recover from error state.
Data
0 (Former command system),
1 (New command system)
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4. Command list
4.1 Operation commands
The operation commands are used for the basic operation setting of this projector. They may not be executed while
the signals are changed. The operation commands have no data codes. (When the commands for input select are
sent while the splash screen is being displayed, the splash screen is only canceled.)
ITEM
POWER ON ! 21h This command is invalid for 1 minute after the power is turned off.
POWER OFF " 22h This command is invalid for 1 minute after the power is turned on.
INPUT COMPUTER 1 _r1 5Fh 72h 31h This command will not be executed in Stand-by mode or when the MUT E is executed.
INPUT COMPUTER 2 _r2 5Fh 72h 32h This command will not be exec uted in Stand-by mode or when the MUT E is executed.
INPUT VIDEO _v1 5Fh 76h 31h This command will not be executed in Stand-by mode or when the MUT E is executed.
INPUT S-VIDEO _v2 5Fh 76h 32h This command will not be executed in Stand-b y mode or when the MUTE is executed.
INPUT HDMI _d1 5Fh 64h 31h This comm and will not be executed in Stand -by mode or when the MUTE is executed.
INPUT PC LESS
PRESENTATION
INPUT USB DISPLAY _s2 5Fh 73h 32h This command will not be executed in Stand-by m ode or when the MUT E is executed.
INPUT LAN DISPLAY _n1 5Fh 6Eh 31h This comm and will not be executed in Stand-by mode or when the MUTE is executed.
Character ASCII
[Example] When setting the input signal to COMPUTER 1. (Values enclosed in quotation marks are ASCII
codes.):
Command sent from the PC, etc.
‘30’ ‘30’ ‘5F’ ‘72’ ‘31’ ‘0D’
00_r1
Function
_s1 5Fh 73h 31h This command will not be executed in Stand-by m ode or when the MUT E is executed.
Status code returned
from the projector
Note
Description
Command for setting the input signal
to COMPUTER 1
‘30’ ‘30’ ‘5F’ ‘72’ ‘31’ ‘0D’
00_r1
Command receipt confirmation
(Command echo back)
4.2 Reading command diagram
The projectors operating status, such as POWER-ON/OFF and the currently selected input terminal, etc. can be monitored.
ITEM
Function Data (Receive) Function Data (Receive)
Character ASCII
POWER ON vP 1 76h 50h 31h
POWER OFF vP 0 76h 50h 30h
INPUT COMPUTER 1 vI r1 76h 49h 72h 31h
INPUT COMPUTER 2 vl r2 76h 49h 72h 32h
INPUT VIDEO vl v1 76h 49h 76h 31h
INPUT S-VIDEO vl v2 76h 49h 76h 32h
INPUT HDMI vl d1 76h 49h 64h 31h
INPUT PC LESS PRESENTATION vl s1 76h 49h 73h 31h
INPUT USB DISPLAY vl s2 76h 49h 73h 32h
INPUT LAN DISPLAY vl n1 76h 49h 6Eh 31h
POWER ON/OFF IMPOSSIBLE vPK 0 76h 50h 4Bh 30h
POWER ON/OFF POSSIBLE vPK 1 76h 50h 4Bh 31h
NO SIGNAL SUPPLIED vSM 0 76h 53h 4Dh 30h
SIGNAL SUPPLIED vSM 1 76h 53h 4Dh 31h
Use the following commands to obtain the values of the items in the INFORMATION menu.
ITEM
Character ASCII
Function
Data (Receive)
LAMP TIME (LOW) vLE 76h 4Ch 45h hhhhmm
RESOLUTION vRESO 76h 52h 45h 53h 4Fh HHHHxVVVV
“hhhh” and “mm” represent hours and minutes respectively.
“HHHH” and “VVVV” represent the horizontal and vertical resolutions respectively.
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Use the following commands to obtain other information.
ITEM
Model name vMDL 76h 4Dh 44h 4Ch ****************(within 16 characters)
Projector status vST 76h 53h 54h 0 (Stand-by mode),
Error status vER 76h 45h 52h Reading out error data (3 digits, hexadecimal numbers, total 9 bits)
Character ASCII
Function
Data (Receive)
1 (Within 1 minute after POWER-ON (warm-up mode)),
2 (POWER-ON mode (including state of warning)),
3 (Cooling mode),
4 (Abnormal state (including shutdown due to an error)),
5 (State of functioning (menu display, dialog display, AV MUTE,
MAGNIFY, FREEZE, etc.)),
6 (Awaiting password entry)
(MSB) xb1, xb2... xb8, xb9, 0, 0, 0 (LSB)
xb1: Fan error
xb2: Lamp error (The lamp goes out or does not light.)
xb3: Lamp warning 1 (The lamp life has expired.)
xb4: Lamp warning 2 (The lamp life is expiring.)
xb5: Temperature error
xb6: The temperature warning is being indicated.
xb7: Lamp cover open error
xb8: Fixed to 0.
xb9: States of other component abnormality
The PC sends the command without attaching the data code to it. On the other hand, the projector attaches to the
received command its current operating status as the data code and send it back to the PC.
[Example] When checking the currently selected input terminal (when the IMPUT VIDEO is being selected).
(Values enclosed in quotation marks are ASCII codes.):
Command sent from the PC, etc.
‘30’ ‘30’ ‘76’ ‘49’ ‘0D’
00vl
‘30’ ‘30’ ‘76’ ‘49’ ‘76’ ‘31’ ‘0D’
Status code returned
from the projector
Description
Command for checking the
input terminal
Check result (VIDEO)
00vlv1
4.3 Remote commands (Not executable in stand-by mode. When the remote commands are sent while the splash
screen is being displayed, the splash screen is only canceled.)
The remote commands allow the computer to control the projector in the same way as by the remote control.
(Some operations cannot be controlled.) The remote commands have no data codes.
Button’s name on remote
Character ASCII
Function
+/VOLUME r06 72h 30h 36h
-/VOLUME r07 72h 30h 37h
KEYSTONE r43 72h 34h 33h
MAGNIFY r02 72h 30h 32h
AV MUTE ra6 72h 61h 36h
r53 72h 35h 33h
r2b 72h 32h 62h
r4f 72h 34h 66h
r59 72h 35h 39h
MENU r54 72h 35h 34h
ENTER r10 72h 31h 30h
AUTO POSITION r09 72h 30h 39h
FREEZE ra4 72h 61h 34h
ASPECT re2 72h 65h 32h
USB DEVICE UNPLUG rb5 72h 62h 35h
3D r57 72h 35h 37h
EFFICIENT MODE ra8 72h 61h 38h
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[Example] When displaying the MENU selection bar. (Values enclosed in quotation marks are ASCII codes.):
Command sent from the PC, etc.
‘30’ ‘30’ ‘72’ ‘35’ ‘34’ ‘0D’
00r54
‘30’ ‘30’ ‘72’ ‘35’ ‘34’ ‘0D’
00r54
Status code returned
from the projector
Description
Command operating the same as
the MENU button
Command receipt confirmation
(Command echo back)
4.4 Direct commands (Not executable in stand-by mode. Possible only to read during muting.)
The direct commands are used to numerically adjust the volume and keystone.
When the computer sends the command without adding the setting value, the projector returns the received
command with the current setting value added as a data code.
ITEM
VOLUME VL 56h 4Ch 00-21
KEYSTONE (vertical) KS 4Bh 53h ±20
Character ASCII
Function
Data
How to set the value
Use the character or ASCII code as shown below to set the value.
Character
ASCII ‘2Bh’ ‘2Dh’ ‘30h’ ‘31h’ ‘32h’ ‘33h’ ‘34h’ ‘35h’ ‘36h’ ‘37h’ ‘38h’ ‘39h’
＋ －
0 1 2 3 4 5 6 7 8 9
[Example 1] When setting the volume to 15. (Values enclosed in quotation marks are ASCII codes.):
Command sent from the PC, etc.
‘30’ ‘30’ ‘56’ ‘4C’ ‘31’ ‘35’ ‘0D’
00VL15
‘30’ ‘30’ ‘56’ ‘4C’ ‘31’ ‘35’ ‘0D’
00VL15
Status code returned
from the projector
Description
Command for setting the volume
Command receipt confirmation
(Command echo back)
4.5 Function commands (Not executable in stand-by mode. When the mute commands are sent while the splash
screen is being displayed, the splash screen is only canceled.)
The mute commands are used for the mute setting of this projector with the 0 (HEX: 30h) and 1 (HEX: 31h).
ITEM
AV MUTE MUTE 4Dh 55h 54h 45h 0(OFF), 1(ON)
FREEZE FRZ 46h 52h 5Ah 0(OFF), 1(ON)
MAGNIFY MGNFY 4Dh 47h 4Eh 46h 59h 0(OFF), 1(ON)
Character ASCII
Function
Data
4.6 Menu setting commands (Not executable in stand-by mode. Possible only to read during muting.)
The menu setting commands are used for the menu setting of this projector. If the personal computer sends the
command without attaching the data code, the projector attaches to the received command its current setting
value as the data code and send it back to the PC.
ITEM
Image IMG 49h 4Dh 47h 0 (Auto), 1 (Theater), 2 (Presentation),
Brightness QQ 51h 51h ±30
Contrast PP 50h 50h ±30
Color Temp. A 41h 1 (Mid), 2 (High), 3 (Low), 4 (User)
Aspect Ratio SC 53h 43h 0 (Normal), 1 (16:9), 2 (Native), 3 (Full)
3D TDM 54h 44h 4Dh 0 (Off), 1 (Auto)*1, 2 (Side by Side),
3D Sync Invert TDS 54h 44h 53h 0 (Off), 1 (On)
Color T 54h ±10
Sharpness R 52h ±05
Tint S 53h ±10
*1
‘’Auto’’ can be enabled for 3D option when the signal is from the HDMI terminal.
Character ASCII
Function
Data
3 (Standard), 4 (Black Board), 5 (White Board),
6 (User)
3 (Top and Bottom), 4 (Frame Sequential)
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ITEM
Audio Input AUDIO 41h 55h 44h 49h 4Fh 0 (Auto), 1 (Audio1), 2 (Audio2), 3 (Audio3), 4 (Mix)
Lamp Mode LM 4Ch 4Dh 0 (Standard), 1 (Low)
Standby Mode STBY 53h 54h 42h 59h 0 (LAN), 1 (Low), 2 (Speaker Out), 3 (Monitor Out)
Menu Position MP 4Dh 50h 0 (Upper Left), 1 (Upper Right), 2 (Center),
Image Reverse IR 49h 52h 0 (Off), 1 (Mirror), 2 (Invert), 3 (Mirror Invert)
Auto Keystone AKS 41h 4Bh 53h 0 (Off), 1 (On)
Test Pattern TP 54h 50h 0 (Off), 1 (Cross Hatch), 2 (White), 3 (Black)
Language LG 4Ch 47h 00:Japanese, 01:English, 02:Spanish,
Reset All RSTALL 52h 53h 54h 41h 4Ch 4Ch
Password Lock
Video Signal
(VIDEO only)
Closed Caption CC 43h 43h 0 (Off), 1 (CC1), 2 (CC2), 3 (CC3), 4 (CC4),
Character ASCII
PSLOCK****
VS 56h 53h 0 (Auto), 1 (NTSC), 2 (PAL), 3 (SECAM),
Function
3 (Lower Left), 4 (Lower Right)
03:Germany, 04:French, 05:Italian, 06:Chinese,
07:Korean, 08:Russian, 09:Portuguese,
11:Swedish , 12:Polish, 13:Hungarian, 18:Arabic,
19:Turkish, 20:Thai, 21:Indonesian, 22:Malay
50h 53h 4Ch 4Fh 43h 4Bh **** is a 4-digit password comprised of any figures
1 to 4.
4 (4.43NTSC), 5 (PAL-M), 6 (PAL-N), 7 (PAL-60)
5 (T1), 6 (T2)
Data
Some commands are not executed depending on the input signal. The operational restrictions same as those on
the menu setting are applied. Refer to “Menu operation” in the User Manual for more details. How to set the value.
How to set the value
Use the character or ASCII code as shown below to set the value.
Character
ASCII ‘2Bh’ ‘2Dh’ ‘30h’ ‘31h’ ‘32h’ ‘33h’ ‘34h’ ‘35h’ ‘36h’ ‘37h’ ‘38h’ ‘39h’
＋ －
0 1 2 3 4 5 6 7 8 9
[Example 1] When setting the Contrast to +10. (Values enclosed in quotation marks are ASCII codes.):
Command sent from the PC, etc.
‘30’ ‘30’ ‘50’ ‘50’ ‘2B’ ‘31’ ‘30’ ‘0D’
00PP+10
‘30’ ‘30’ ‘50’ ‘50h’ ‘2B’ ‘31’ ‘30’ ‘0D’
00PP+10
Status code returned
from the projector
Description
Command for setting the picture
control
Command receipt confirmation
(Command echo back)
[Example 2] When setting the 3D to Side by Side. (Values enclosed in quotation marks are ASCII codes.):
Command sent from the PC, etc.
‘30’ ‘30’ ‘54’ ‘44’ ‘4D’ ‘32’ ‘0D’
00TDM2
‘30’ ‘30’ ‘41’ ‘50’ ‘4F’ ‘4E’ ‘31’ ‘0D’
00TDM2
Status code returned
from the projector
Description
Command for setting the 3D
to Side by Side
Command receipt confirmation
(Command echo back)
[Example 3] When checking the TINT setting (when the TINT is set to +10). (Values enclosed in quotation marks
are ASCII codes.):
Command sent from the PC, etc.
‘30’ ‘30’ ‘53’ ‘0D’
00S
‘30’ ‘30’ ‘53’ ‘2B’ ‘31’ ‘30’ ‘0D’
00S+10
Status code returned
from the projector
Description
Command for checking the
TINT setting
Check result (+10)
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4.7 Password lock commands
The password lock commands control the password lock. The password lock enabling or disabling command is
sent with a 4-digit password comprised of any figures 1 to 4 added to the end of the data code. When the
password lock is enabled successfully, the projector sends a return command comprising the data code,
password. When enabling the password lock fails, it sends a return command with “:N” at the end. There is no
reconfirmation of the password.
ITEM
Password Lock enabling
Character ASCII
PSLOCK**** 50h 53h 4Ch 4Fh 43h 4Bh **** is a 4-digit password comprised of any
Function
figures 1 to 4.
[Example] When enabling the password lock. (In the case that the password is 1234):
Command sent from the PC, etc.
‘30’ ‘30’ ‘50’ ‘53’ ‘4C’ ‘4F’ ‘43’ ‘4B’
‘31’ ‘32’ ‘33’ ‘34’ ‘0D’
00PSLOCK1234
‘30’ ‘30’ ‘50’ ‘53’ ‘4C’ ‘4F’ ‘43’ ‘4B’
‘31’ ‘32’ ‘33’ ‘34’ ‘0D’
00PSLOCK1234
Status code returned
from the projector
Command for enabling the
password Lock
Response informing that the
projector succeeded in enabling
the password lock
Data
Description
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5. Execution procedure of RS-232C commands via LAN
PC
When the RS-232C command is executed via LAN, a 32-byte connection certification data must be added before the
RS-232C command.
To create a 32-byte certification data, following information and procedure are required.
Random character string for creating the certification data that is acquired from the projector (8 characters).
Network password of the projector (1 to 32 characters).
MD5 hash calculation.
Based on the above, the execution procedures to connect to the projector and send the RS-232C commands
are described below.
1. Connect to Port 63007 of the projector from the PC as a TCP/IP client.
2. After completing the connection, send the acquisition request for the certification data (“$AK ”) from the PC
to the projector.
3. Acquire “$AK******** ” on the PC as the response of the request sent in Step 2. (********: Random character
string for creating the certification data)
4. Create the data for the certification on the PC.
Create the key of the certification data by linking the data acquired in Step 3 with the network character
string.
For example, when the random character string is 12345678 and the password is ABCD, the key of the
certification data is 12345678ABCD (character string in ASCII code).
Run MD5 hash on the key of the certification data.
Create the certification data by converting the hash-calculated 16-byte data into the ASCII code character
string.
Example:
Calculation result: [4f][3c][5d][a1][7b][4f][b5][ed][2c][99][4e][bb][f6][57][67][54] (hexadecimal numeral)
Certification data: 4f 3c 5d a1 7b 4f b5 ed 2c 99 4e bb f6 57 67 54 (character string in ASCII code)
5. Send the RS-232C command with the certification data from the PC to the projector.
Example:
To send the PON command (00! ) using the certification data created in Step 4:
4f3c5da17b4fb5ed2c994ebbf657675400!
6. Receive the response from the projector on the PC.
Response data has the following patterns.
Normal: 00! (Parameter is added depending on the command.)
Error in the certification data: PRV=ERRA
Command error: 00!:N
Projector
1. Connection
2. Acquisition request of the certification data
3. Receiving of the certification data
4. Creation of the certification data
5. Sending of the RS-232C command
6. Receiving of the response data
You can change the password using the NETWORK PASSWORD in the NETWORK menu.
The default password is “admin.”
When you use a LAN function, set the Standby Mode to “LAN”, “Speaker Out” or “Monitor Out”.
Refer to the operation manual of the projector for setting the Standby Mode.
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