InFocus LP790 Installation instructions

InFocus LP790 RS232 Commands

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1PURPOSE.......................................................................................................................................3
2SCOPE.............................................................................................................................................3
3 FUNCTION TYPE........................................................................................................................3
3.1 LEGAL ARGUMENTS.........................................................................................................................................................................3
4COMMANDRETURN CODES...................................................................................................4
5COMMAND SYNTAX..................................................................................................................4
5.1 DELIMITER.........................................................................................................................................................................................4
5.2 SEPARATOR........................................................................................................................................................................................4
5.3 COMMAND EXAMPLE .......................................................................................................................................................................4
6ERROR SYNTAX..........................................................................................................................5
6.1 ERROR EXAMPLE..............................................................................................................................................................................5
7TRANSACTION EXAMPLES.....................................................................................................6
8TABLE OF FUNCTIONS.............................................................................................................7
9SETUP RECOMMENDATION.................................................................................................10
9.1 SETTING UP………………………………………………………………………………………………………..10
9.2 CABLES……………………………………………………………………………………………………………..10
9.3 COMMUNICATION PROTOCOL…………………………………………………………………………………10

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1PURPOSE
This document describes the Projector Management Protocol between the Projector and a Computer (Host). The Protocol is
based on a ASCII commands. By using this protocol a Host will be able control the projector on a physical link.
2SCOPE
The physical link is not defined in this document. Therefore the protocol can either be implemented on topof RS-232, USB,
Ethernet or other forthcoming communication methods.
3FUNCTION TYPE
The Function is grouped in four different function types:
Function type Comments
Execute An execute function executes an action on the projector, i.e.
only one state.
State A State function performs a set operation from a predefined
list of states. Not all values in the range
have to be legal.
Adjust An adjust function is characterized by Maximum >
Minimum. And all the integer values between Minimum and
Maximum are legal.
Query A query function is a read only function.
Table 1
3.1 Legal Arguments
Each Function type has a set of legal arguments:
Function type Argument Comments
State <decimal number> Sets the function to the required state.
Adjust +Increases the value of the function one step.
Adjust -Decreases the value of the function one step.
Adjust <decimal number> Sets the value of the function to the specific number.
All ?Requests current, max and min value of the function.
Execute EExecutes an action.
All S? Returns ‘0’ if function is not supported
Return ‘1’ if function is supported
All CReturns Current Value
All XReturn max value
All MReturns min value
All DSet the function to the default value
Table 2

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4COMMAND RETURN CODES
If a valid command is received the projector executes the command and as an acknowledgment it replies to the projector by
returning a copy of the command with the current value appended.
If the projector receives an illegal command it replies by returning an error message.
5COMMAND SYNTAX
Every command consists of a command that is ended with a delimiter. The command consists off a function code, a
separator, and an argument.
A function code consists of 3-5 ASCII letters and begins with a letter [A-Z], [a-z]
|---------------------Command----------------------------------|
<Function code> <Separator> <Argument> <Delimiter >
At the end of this document, the “Table of Serial Commands” lists all valid function codes. Any other combination of
characters received before a delimiter will result in an error response from the projector to the control unit (Host).
5.1 Delimiter
ASCII HEX DEC Comment
^M 0D 13 The stop of a command is indicated by a carriage return = ↵
^L 0A 10 Line feeds after CR is ignored.
Table 3
5.2 Separator
ASCII HEX DEC Comment
;3B 59 Used as a separator between the function code and the argument
Table 4
5.3 Command Example
|------------------------Command---------------------------------|
<Function code> <Separator> <Argument> <Delimiter >
BRG ; 55 ↵
Always initiate programming by sending a carriage return

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6ERROR SYNTAX
If an command isn’t available the projector response with an error message:
|------------------------------------ Error message ----------------------------------|
<Error Mark> <(Command)> <ErrorCode> <Separator> <<ErrorString>>
ASCII HEX DEC Comment
!21 33 Error is always started with an Error Mark
Table 5
The following error codes are defined:
1000;<Unknown command>
1001;<Unknown parameter>
1002;<Parameter out of range>
1003;<Command not supported by this projector>
1004;<Command only available in Power on>
1005;< Projector not ready to be turned on>
1006;<Command only available with valid input source>
1007;<Command only available with external module>
1008;<Command failed>
2000;<Command only available in RGB>
2001;<Command only available in VIDEO>
2002;<Command only available in NTSC>
6.1 Error Example
ASK>BRX;50↵
<Error Mark> <(Command)> <ErrorCode> <Separator> <<ErrorString>>
! (BRX;50) 1000 ; <Unknown command >

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7TRANSACTION EXAMPLES
Character string is in ASCII code and↵is carriage return:
Adjust function:
ASK>BRG;?
Min = 0
Default = 128
Max = 255
Current = 12
ASK>BRG;10↵
BRG=10
ASK>
ASK>BRG;200↵
!(BRG;200)8001;<Parameter out of range>
ASK>
State function:
ASK>REAR;1↵
REAR=1
ASK>
Execute function:
ASK>FRES;E↵
ASK>
Find out if a function is supported:
ASK>FRES;S?↵
1
ASK>

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8TABLE OF FUNCTIONS
Src.dep = Source dependentuse ? or C,X,M parameter to get current Max and Min values before setting this functions.
Function F. code F.type Arguments Minimum Maximum
Power PWR State 0 – Off
1 – On - -
Reset RES Execute E- -
Tune TUNE Adjust -/+, <dec> Scr.dep Scr.dep
Frequency FRQ Adjust -/+, <dec> Scr.dep Scr.dep
Horizontal
position HOR Adjust + (Up) - (Down)
<dec>
Scr.dep Scr.dep
Vertical position VER Adjust + (Right)
- (Left)
<dec>
Scr.dep Scr.dep
ColorTemp COLT Adjust -/+, <dec> 0100
Rear REAR State 0 – Front projection
1 – Rear projection - -
Ceiling CEIL State 0 – Table use
1 – Ceiling mount - -
Factory reset FRES Execute E- -
Table 6
Function F. code F.type Arguments Minimum Maximum
Contrast CON Adjust -/+, <dec> 0100
Brightness BRG Adjust -/+, <dec> 0100
Tint TINT Adjust -/+, <dec> 0100
Color COL Adjust -/+, <dec> 0100
Sharpness SHRP Adjust -/+, <dec> 0100
Keystone KSTN Adjust -/+, <dec> 0100
16:9 16_9 State 0 – 4:3 aspect
1 – 16:9 aspect - -
Table 7
Function F. code F.type Arguments Minimum Maximum
Volume VOL Adjust -/+, <dec> 0100
Mute MUTE State 0 – Off
1 – On - -
Treble TRE Adjust -/+, <dec> 0100
Bass BASS Adjust -/+, <dec> 0100
Loudness LOUD State 0 – Off
1 – On - -
Mute Internal MUIN State 0 – Off
1 – On - -
Table 8

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Function F. code F.type Arguments Minimum Maximum
On screen display OSD State 0 – Off
1 – On - -
Source SRC State 0 – VGA1
1 – S-VIDEO1
2 – CVBS1
3 – VGA2
4 – S-VIDEO2
5 – CVBS2
6 – DVI1
7 – DVI2
8 – BNC1
9 – BNC2
- -
Osd language LANG State 0 – English (default)
1 – French
2 – German
3 – Spanish
4 – Norwegian
5 – Italian
6 – Japanese
8 – Chinese Simpl.
9 – Chinese Trad.
10 – Portugese
- -
Mask1MSK Adjust -/+, <dec> 0100
Black2BLK State 0 – Off
1 – On - -
Magnify ZOOM Adjust -/+, <dec> 0100
Pan horizontal3PANH Adjust -/+, <dec> Scr.dep Scr.dep
Pan vertical PANV Adjust -/+, <dec> Scr.dep Scr.dep
Freeze FRZ State 0 – Off
1 – On - -
Baudrate BAU State 1200
9600
19200
- -
DPMS DPMS State 0 – Off
1 – On - -
Source Search SRCH State 0 – Off
1 – On - -
IR Reciever IRRE State 0 – Off Not saved!
1 – On - -
Keyboard KBRD State 0 – Off Not saved!
1 – On - -
Table 9
1Sliding a mask from the bottom of the screen. Bottom is line 0
2Blacks the picture
3Is used to define a new Zoom point

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Function F. code F.type Arguments Minimum Maximum
Information INF State 0 – Response is source
information .
1 - Response is Service
information.
2 – Response is product ID.
3 – Response is software version.
4 – Response is hardware revision
5 – Response is Lamp Time
6 – Response is
Remaining Lamp Time
7 – Response is
Protocol Version
8 – Response is product name
9- Response is network version
- -
Current State CSTA query ?
Response is the
projectors current state
Word in hex ( 0000-FFFF)
0 - STANDBY
1 - LAMP_STRIKE
2 - LAMP_ON_WARMING_UP
3 - SEARCHING
4 - SOURCE_DETECTED
5 - PICTURE_SETUP
6 - LAMP_OFF_COOLING
Status Word STAT query ?
Response is the current Status
Word in hex( 0000-FFFF)
Bit D0: Power
Bit D1: Valid Source
Bit D2: Signal Source Change
Bit D3: Module Change
Bit D4: State Change
Bit D5-D7: Reserved
Bit D8: Fan Stop
Bit D9: High Temperature
Bit D10:Lamp Time Expired
Bit D11-D15 Reserved
Table 10

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9SETUP RECOMMENDATION
It is recommended to disable DPMS and Source search with,
DPMS;0↵
SRCH;0↵
,for best control of the projector.
Also disable keyboard and remote after PowerOn with:
IRRE;0↵
KBRD;0↵
These two command isn’t saved so it’s recommended to always set them after the PWR;1 command.
9.1 Setting Up
To enable serial RS-232 control do the following:
•Power up the projector
•Connect the serial (COM) port from the Computer (Host) to the RS-232 port on the projector by using the optional
twisted serial cable mentioned below under CABLES. Power up the computer.
•On the PC side a software that can perform a “terminal emulation” is needed. This is a standard component in most
operating systems, and it is also available as stand alone software. NortonPCAnywhere and Norton Commander are
two programs that can do this. As it is a standard component in the Windows Operating System, we recommend that
HyperTerminal is being used. This can normally be found in the accessories menu. Set the Computer serial port settings
as shown below: Default is 9600 baud - 8 bit - No parity - No flow control - 1 stop bit
•Press ENTER (sending a carriage return) and the projector should respond by sending a prompt (ASK>). The projector
is now ready to receive commands.
9.2 Cables
Optional twisted RS-232 cable part# 301.159.
9.3 Communication Protocol
Parameter Default setting Valid values for direct setting
Baudrate 9600 9600, 19200 bps
Data bit 8none
Parity bit None none
Stop bit 1none
Flow Control None none