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9) Password lock commands

The  password  lock  commands  control  the  password  lock.  The  password  lock  enabling  or  disabling  command 
is sent with a 4 to 8-digit password comprised of any figures 1 to 4 added to the end of the data code. When 
the  password  lock  is  enabled  or  disabled  successfully,  the  projector  sends  a  return  command  comprising  the 
data code, password, and “1” at the end. When enabling or disabling the password lock fails, it sends a return 
command with “0” at the end. There is no reconfirmation of the password. The password input command is for 
enabling projection of image when password lock has been set to DISPLAY INPUT. The password input command 
is sent with a 4 to 8-digit password comprised of any figures 1 to 4 at the end. 

ITEM

ASCII

HEX

VALUE

Password lock enabling/
disabling

PSLOCK

50h  53h  4Ch  4Fh  43h  4Bh

0**** (UNLOCK), 1**** (DISPLAY INPUT), 
2**** (MENU ACCESS), 3**** (SPLASH ID SCREEN)

Password input

PASS

50h  41h  53h  53h

****

**** is a 4 to 8-digit password comprised of any figures 1 to 4. 

[Example]  When enabling the password lock of DISPLAY INPUT (in the case that the password is 123412):

Sending commands

from the PC, etc.

Status code 

from the projector

Description

30 30 50 53 4C 4F 43 4B 31 31 32 33 34 31 32 0D
‘0’ ‘0’ ‘P’ ‘S’ ‘L’ ‘O’ ‘C’ ‘K’ ‘1’ ‘1’ ‘2’ ‘3’ ‘4’ ‘1’ ‘2’ ‘ ’

Command for enabling the 
password lock of DISPLAY INPUT

30 30 50 53 4C 4F 43 4B 31 31 32 33 34 31 32 31 0D
‘0’ ‘0’ ‘P’ ‘S’ ‘L’ ‘O’ ‘C’ ‘K’ ‘1’ ‘1’ ‘2’ ‘3’ ‘4’ ‘1’ ‘2’ ‘1’ ‘ ’

Response informing that the 
projector succeeded in enabling the 
password lock of DISPLAY INPUT

10) Reading command diagram

The projectors operating status, such as POWER-ON/OFF and the currently selected input terminal, etc. can be 
monitored.

ASCII

HEX

Function

Data (Receive)

Function

Data (Receive)

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 

vI

r2

76h  49h

72h  32h

INPUT DVI

vI

d1

76h  49h

64h  31h

INPUT VIDEO

vI

v1

76h  49h

76h  31h

INPUT S-VIDEO 

vI

v2

76h  49h

76h  32h

POWER ON/OFF INPOSSIBLE

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

ASCII

HEX

VALUE

LAMP TIME (LOW)

vLE

76h  4Ch  45h

hhhhmm

RESOLUTION

vRESO

76h  52h  45h  53h  4Fh

HHHHxVVVV

VERTICAL FREQUENCY

vVFREQ

76h  56h  46h  52h  45h  51h

***.**

HORIZONTAL FREQUENCY

vHFREQ

76h  48h  46h  52h  45h  51h

***.**

SYNC. TYPE

vSYNCT

76h  53h  59h  4Eh  43h  54h

0 (NO SIGNAL), 3 (3wire),  4 (4wire),  
5 (5wire), 6 (SCART) 

“hhhh” and “mm” represent hours and minutes respectively. 
“HHHH” and “VVVV” represent the horizontal and vertical resolutions respectively. 

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 INPUT VIDEO is being selected):

Sending commands

from the PC, etc.

Status code 

from the projector

Description

30 30 76 49 0D
‘0’ ‘0’ ‘v’ ‘l’ ‘ ’

Command for checking the input 
terminal

30 30 76 49 76 31 0D
‘0’ ‘0’ ‘v’ ‘l’ ‘v’ ‘1’ ‘ ’

Check result (VIDEO)

Summary of Contents for MH2850U

Page 1: ...port may not function Adapters may be necessary depending on the PC connected to this projector Contact your dealer for details 1 Interface 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 For RS 232C cable the reverse type cable should be used 2 Control command diagram The command ...

Page 2: ...peration commands have no data codes Operation ASCII HEX Note 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 MUTE is executed INPUT COMPUTER 2 _r2 5Fh 72h 32h This command will not be execute...

Page 3: ...remote commands are sent while the splash screen is being displayed the splash screen is only canceled Some remote control operations can be achieved by the remote command codes The remote commands have no data codes Button s name on remote ASCII HEX VOLUME r06 72h 30h 36h VOLUME r07 72h 30h 37h KEYSTONE r43 72h 34h 33h EXPAND r02 72h 30h 32h PinP r04 72h 30h 34h MUTE ra6 72h 61h 36h r53 72h 35h 3...

Page 4: ... password lock of DISPLAY INPUT 10 Reading command diagram The projectors operating status such as POWER ON OFF and the currently selected input terminal etc can be monitored ASCII HEX Function Data Receive Function Data Receive 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 vI r2 76h 49h 72h 32h INPUT DVI vI d1 76h 49h 64h 31h INPUT VI...

Page 5: ...FF 1 ON INPUT LEVEL IPL 49h 50h 4Ch 5 For DVI input 0 NORMAL 1 ENHANCED WALL SCREEN WS 57h 53h 0 OFF 1 BEIGE 2 LIGHT BLUE 3 LIGHT GREEN 4 PINK 5 BLACK BOARD WALL SCREEN BEIGE WSY 57h 53h 59h 1 5 WALL SCREEN LIGHT BLUE WSB 57h 53h 42h 1 5 WALL SCREEN LIGHT GREEN WSG 57h 53h 47h 1 5 WALL SCREEN PINK WSP 57h 53h 50h 1 5 LAMP MODE LM 4Ch 4Dh 0 STANDARD 1 LOW AUTO POWER ON APON 41h 50h 4Fh 4Eh 0 OFF 1 ...

Page 6: ... commands from the PC etc Status code from the projector Description 30 30 41 50 4F 4E 31 0D 0 0 A P O N 1 Command for setting the AUTO POWER ON to ON 30 30 41 50 4F 4E 31 0D 0 0 A P O N 1 Command receipt confirmation Command echo back Example 2 When setting the CONTRAST R of the COLOR TEMP USER to 10 the CONTRAST G to 0 and the CONTRAST B to 5 Figures and symbols enclosed in quotation marks are A...

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