InFocus LP280 Gebrauchs- und Wartungshandbuch

1SETTING UP ...................................................................................................................3

1.1 RS232 CONTROL CABLES ...............................................................................................................................3

1.2 RS232 SETTINGS............................................................................................................................................3

2GENERAL .......................................................................................................................4

3FUNCTION TYPE...........................................................................................................4

4PROTOCOL MESSAGES ..............................................................................................4

4.1 MESSAGE FORMATS ........................................................................................................................................4

4.1.1 Message Head .......................................................................................................................................4

4.1.2 Message Body.......................................................................................................................................5

5COMMAND RETURN CODES........................................................................................6

TRANSACTION EXAMPLES...................................................................................................6

6TABLE OF FUNCTIONS.................................................................................................8

APPENDIX 1: CRC CALCULATION ALGORITHM.................................................................10

1SETTING UP

1.1 Rs232 Control Cables

Please order the following parts:

Part Number Description

301.102A Mouse Cable 4 meter

301.113B PC Mouse Adapter RS232 Straight

Table 1

1.2 RS232 Settings

The setting is:

Parameter Default setting

Baudrate 9600

Data bit 8

Parity bit None

Stop bit 1

Flow Control None

Table 2

2GENERAL

This document describes the Communication Protocol between a Proxima® Projector and a Computer

(Host). By using this connection the Host will be able control the projector.

This document are HEX command based only and a regular Terminal program like hyperterminal

etc. can therefore not directly be used unless the COM port are activated by the user. This document

is aimed at control systems in general which is HEX based.

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 An State function performs a set operation from a

predefined list of states. Not all values in the range

have to be legal.

State String As state but returns ASCII strings

Adjust An adjust function is characterized by Maximum >

Minimum. And all the integer values between Minimum

and Maximum are legal.

Table 4

4PROTOCOL MESSAGES

4.1 Message Formats

The message is always divided in a header and a body part:

Message Head (7Byte) Message Body (6Byte)

4.1.1 Message Head

The message head has the following structure:

Byte 0 Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Byte 6

Magic Number Body size CRC

0xBE 0xEF 0x80 0x06 0x00 CRC_lo CRC_hi

Table 5

All values is in hexadecimal indicated with the leading 0x. The Magic number is used for synchronizing the start

of a message. The Body size is set to the number of bytes contained in the Body part of the message.

Currently there is only one type of body so the size is fixed to 0x0006. The CRC field contains the CRC of the

message. The CRC algoritm is given in Appendix 1. To disable CRC set CRC_lo=0x00 and CRC_hi = 0x00.

The Message Head – if the CRC are disabled – then looks like the following string:

0xBE 0xEF 0x80 0x06 0x00 0x00 0x00.This Head will be present in all strings sent to the projector from the

host.

4.1.2 Message Body

The message body has the following structure:

Byte 0 Byte 1 Byte 2 Byte 3 Byte 4 Byte 5

Operation Type Function Value

OpTypeLo 0x00 FuncNum_lo 0x00 Opval_lo Opval_hi

Table 6

4.1.2.1 Field description

Field Name Field Value Description

OpTypeLo

0x01 Operation Set. Set current value

0x02 Operation Get. Gets the current value

0x03 Operation Initialize. Initialize the value to

default. Should not be used

0x04 Operation Increment. Increment the value by

one step. Only valid for “Adjust” functions.

0x05 Operation Decrement. Decrement the value by

one step. Only valid for “Adjust” functions.

Operation Type

0x06 Operation Execute. Execute the operation.

Only used for “Execute” operations

Function FuncNum The actual function number to execute. A list of

usable FuncNum is given in Chapter 9

Value -Only used by Operation Set. The actual value to

set the operation to. For all other operation

actions, this field is set to 0x0000.

Table 7

5COMMAND RETURN CODES

The Serial protocol returns an acknowledgement (“return code”) for every packet sent. If

the host sends a packet, then the projector acknowledge the receipt of this packet. The return codes are detailed

in the table below.

Command Return Code Name Return Code Value Description

ACK 0x06 Packet acknowledged – no errors. Normal

response when receiving

NAK 0x15 Packet not acknowledged – some error occurred

in receiving this packet. Usually

Indicates a CRC error.

ERR 0x1C 0xXXXX Packet was received OK, but an error occurred

when executing the command contained in the

Packet. The two bytes following the 0x1C

(0xXXXX) are the error code

VAL 0x1D 0xXX 0xYY Packet value returned. This return code will be

sent in response to a Operation packet of type

OPERATION_GET. The first byte after 0x1D

(0xXX), is the least-byte of the returned value.

The

0xYY is the most significant-byte of the returned

value.

STRING Strings 0x06 ASCII Strings and at last ACK

Table 8

TRANSACTION EXAMPLES

Example 1: Set

Host: Projector

Operation Set Packet =>

<= ACK

Example 2: Get

Operation Get Packet =>

<= VAL

VAL=0x1D 0x00 0x03 means that 0x0300 is returned

Example 3: Hex sequence for Set Brightness to 70% => 0.7*255 = 178 = 0xB2

Host:

0xBE 0xEF 0x80 0x06 0x00 0x2E 0x04 0x01 0x00 0x11 0x00 0xB2 0x00

Magic number Body size CRC Op.type Function Value

7byte Message Head 6byte Message Body

Projector:

0x06

Example 4: Hex sequence for power on (with CRC deactivated)

Host:

0xBE 0xEF 0x80 0x06 0x00 0x00 0x00 0x01 0x00 0x01 0x00 0x01 0x00

Example 5: Hex sequence for get Brightness

Host: =>

0xBE 0xEF 0x80 0x06 0x00 0xBD 0x70 0x02 0x00 0x11 0x00 0x00 0x00

<= Projector (70%)

0x1D 0x00 0xB2

Example 5: To get ASCII Information Set Parameter in the State String function

Host: Projector

Operation Set Packet =><=ASCII Strings

<= ACK

6TABLE OF FUNCTIONS

Scr.dep = Source depended

Function FuncNum F.type States Minimum Maximum

Power 0x01 State 1 (On)

0 (Off) - -

Reset 0x02 Execute - - -

Tune 0x03 Adjust -0 255

Width 0x04 Adjust -0 4095

Horizontal

position 0x05 Adjust -0 4095

Vertical position 0x06 Adjust -0 4095

ColorTemp 0x07 Adjust -0 3

Rear 0x08 State 1 (On)

0 (Off) - -

Ceiling 0x09 State 1 (On)

0 (Off) - -

Factory reset 0x0A Execute - - -

Table 9

Function FuncNum F.type States Minimum Maximum

Contrast 0x10 Adjust -0 255

Brightness 0x11 Adjust -0 255

Tint 0x12 Adjust -0 255

Color 0x13 Adjust -0 255

Sharpness 0x14 State 5(Softest)

6(Soft)

7(Medium)

8(Sharp)

9(Sharpest)

- -

Keystone 0x15 Adjust -0 255

16:9 0x16 State 1(On)

0 (Off) - -

Table 10

Function FuncNum F.type States Minimum Maximum

Volume 0x20 Adjust -0 100

Mute 0x21 State 1 (On)

0 (Off) - -

Table 11

Function FuncNum F.type States Minimum Maximum

On screen

display 0x30 State 1 (On)

0 (Off) - -

Source 0x32 State 0 (VGA1)

2 (S-VIDEO1)

3 (CVBS1)

- -

Language 0x33 State 0 (English)

1(Japanese)

2(Norwegian)

3 (Deutch)

4 (Italian)

5 (Spanish)

6 (Korean)

7 (Simpl Chi)

8 (Trad Chi)

9 (Portugeese)

10 (French)

- -

Black 0x34 State 1 (On)

0 (Off) - -

Magnify 0x35 Adjust -0 26

Pan horizontal 0x36 Adjust -Scr.dep Scr.dep

Pan vertical 0x37 Adjust -Scr.dep Scr.dep

Freeze 0x38 State 1 (On)

0 (Off) 0 1

PnP 0x39 State 1 (On)

0 (Off) - -

DPMS 0x3A State 1 (On)

0 (Off) - -

Source Search 0x3B State 1 (On)

0 (Off) - -

SerialMouse10x3C State 1 (On)

0 (Off) - -

MenuTimeOut 0x3D Adjust -5 50

Table 12

Function FuncNum F.type States Minimum Maximum

Information 0x40 State Strings 0

Respons is Source.

information .

Respons is Service.

information

- -

Table 13

APPENDIX 1: CRC CALCULATION ALGORITHM

The following ‘C’ code can be used to calculate the 16-bit CRC required for all packets. The CRC is contained in

the packet header and is calculated for the entire packet (header plus body). The CRC

calculation is performed with the CRC bytes of the packet header initialized to zero.

// Using two 256 byte lookup tables, quickly calculate a

16-bit CRC on // a block of data.

// Params:

// pcData : Pointer to data to calculate CRC on.

// nCount : Number of data bytes.

// Return: 16-bit CRC value.

WORD CalculateCRC16(BYTE *pcData, int nCount)

{BYTE cCRCHi = 0xFF; // high byte of CRC initialized

BYTE cCRCLo = 0xFF; // low byte of CRC initialized

BYTE cIndex; // will index into CRC lookup table

while (nCount--) // step through each byte of data

{cIndex = cCRCHi ^ *pcData++; //

calculate the CRC

cCRCHi = cCRCLo ^ cCRCHiArray[cIndex];

cCRCLo = cCRCLoArray[cIndex];

}

return (cCRCHi << 8) + cCRCLo;

}

// Lookup table used for hi-byte of CRC

static const BYTE cCRCHiArray[] = {

0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01,0xC0,

0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80,0x41,

0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01,0xC0,

0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81,0x40,

0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00,0xC1,

0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80,0x41,

0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00,0xC1,

0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80,0x41,

0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01,0xC0,

0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81,0x40,

0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00,0xC1,

0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81,0x40,

0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01,0xC0,

0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81,0x40,

0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01,0xC0,

0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81,0x40,

0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01,0xC0,

0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80,0x41,

0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01,0xC0,

0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80,0x41,

0x01, 0xC0, 0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x01,0xC0,

0x80, 0x41, 0x00, 0xC1, 0x81, 0x40, 0x00, 0xC1, 0x81,0x40,

0x01, 0xC0, 0x80, 0x41, 0x01, 0xC0, 0x80, 0x41, 0x00,0xC1,

0x81, 0x40, 0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80,0x41,

0x00, 0xC1, 0x81, 0x40, 0x01, 0xC0, 0x80, 0x41, 0x01,0xC0,

0x80, 0x41, 0x00, 0xC1, 0x81, 0x40

};

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