NEC X461UN - MultiSync - 46" LCD Flat Panel... Manuale d'uso e manutenzione

(1/43)

External Control NECLCDMonitor

1. Application

This document defines the communications method for control of the NEC LCD monitor, MultiSync X461UN

when using an external controller

2. Connectors and wiring

2.1 RS-232C Remote control

Connector: 9-pin D-Sub

Cable: Cross (reversed) cable or null modem cable

(Please refer “Controlling the LCD monitor via RS-232C Remote control”on User’s manual.)

2.2 LAN control

Connector: RJ-45 10/100 BASE-T

Cable: Category 5 or higher LAN cable

(Please refer “Controlling the LCD monitor via RS-232C Remote control”on User’s manual.)

3. Communication Parameter

3.1 RS-232C Remote control

(1) Communication system Asynchronous

(2) Interface RS-232C

(3) Baud rate 9600bps

(4) Data length 8bits

(5) Parity None

(6) Stop bit 1 bit

(7) Communication code ASCII

3.2 LAN control

Use the payload of TCP packet.

3.3 Communication timing

The controller should wait for a packet interval before next command is sent.

The packet interval needs to be longer than 600msec for the LCD monitor.

(2/43)

4. Communication Format

The command packet consists of four parts, Header, Message, Check code and Delimiter.

Sequence of a typical procedure to control a monitor is as follows,

[A controller and a monitor, two-way communication composition figure]

4.1 Header block format (fixed length)

byte) SOH: Start of Header

ASCII SOH (01h)

Header Message Check Code Delimiter

Header

Message

Check code

Delimiter

SOH Reserved

'0' Destination Source Message

Type Message

Length

-7

MonitorController

Header

Message

Check Code

Delimiter

Header

Message

Check Code

Delimiter

Get Parameter

Get Parameter Reply

Header

Message

Check Code

Delimiter

Set Parameter

Header

Message

Check Code

Delimiter

Set Parameter Reply

Header

Message

Check Code

Delimiter

Header

Message

Check Code

Delimiter

Get Parameter Reply

Save Current Setting Command

Get Parameter

Header

Message

Check Code

Delimiter

The controller sends command to

get a value from the monitor that

you want to change.

The monitor replies a current value

of the requested item.

The controller sends commands to

set an adjusted value.

The monitor replies to the

controller for confirmation.

The controller sends command to

get a value for confirmation.

The monitor replies an adjusted

value.

The controller requests to store

the adjusted value to the monitor.

Header

Message

Check Code

Delimiter

Header

Message

Check Code

Delimiter

Command

Command Reply

The control does not suitable for

above fixed protocol; use the

proper command for each control.

Please refer 7.Power control

procedure and followings.

The monitor replies a proper

message defined for each control.

Header

Message

Check Code

Delimiter

Save Current Setting Command Reply

The monitor replies to the

controller for confirmation.

(3/43)

byte) Reserved: Reserved for future extensions.

On this monitor, it must be ASCII '0'(30h).

byte) Destination: Destination equipment ID. (Receiver)

Specify a commands receiver’s address.

The controller sets the “MONITOR ID”or “GROUP ID”of the monitor controlled in here.

In reply, the monitor sets ‘0’always.

“MONITOR ID”, “GROUP ID”to “Destination Address”conversion table is as follows,

Monitor

ID Destination

Address Monitor

Destination

Address Monitor

Destination

Address Monitor

Destination

Address

1 41h(‘A’) 26 5Ah(‘Z’) 51 73h 76 8Ch

2 42h(‘B’) 27 5Bh 52 74h 77 8Dh

3 43h(‘C’) 28 5Ch 53 75h 78 8Eh

4 44h(‘D’) 29 5Dh 54 76h 79 8Fh

5 45h(‘E’) 30 5Eh 55 77h 80 90h

6 46h(‘F’) 31 5Fh 56 78h 81 91h

7 47h(‘G’) 32 60h 57 79h 82 92h

8 48h(‘H’) 33 61h 58 7Ah 83 93h

9 49h(‘I’) 34 62h 59 7Bh 84 94h

10 4Ah(‘J’) 35 63h 60 7Ch 85 95h

11 4Bh(‘K’) 36 64h 61 7Dh 86 96h

12 4Ch(‘L’) 37 65h 62 7Eh 87 97h

13 4Dh(‘M’) 38 66h 63 7Fh 88 98h

14 4Eh(‘N’) 39 67h 64 80h 89 99h

15 4Fh(‘O’) 40 68h 65 81h 90 9Ah

16 50h(‘P’) 41 69h 66 82h 91 9Bh

17 51h(‘Q’) 42 6Ah 67 83h 92 9Ch

18 52h(‘R’) 43 6Bh 68 84h 93 9Dh

19 53h(‘S’) 44 6Ch 69 85h 94 9Eh

20 54h(‘T’) 45 6Dh 70 86h 95 9Fh

21 55h(‘U’) 46 6Eh 71 87h 96 A0h

22 56h(‘V’) 47 6Fh 72 88h 97 A1h

23 57h(‘W’) 48 70h 73 89h 98 A2h

24 58h(‘X’) 49 71h 74 8Ah 99 A3h

25 59h(‘Y’) 50 72h 75 8Bh 100 A4h

ALL 2Ah(‘*’)

Group

ID Destination

Address Group

Destination

Address Group

Destination

Address Group

ID Destination

Address

A 31h(‘1’) D 34h(‘4’) G 37h(‘7’) J 3Ah(‘:’)

B 32h(‘2’) E 35h(‘5’) H 38h(‘8’)

C 33h(‘3’) F 36h(‘6’) I 39h(‘9’)

Ex.) If you want to control a monitor that has the "ID No." as '1', specify a destination address

'A'(41h). If you want to control all of the monitors which are connected by a daisy chain, specify

a destination address ‘

＊

’(2Ah).

byte) Source: Source equipment ID. (Sender)

Specify a sender address.

The controller must be ‘0’(30h).

In reply, the monitor sets the own MONITOR ID in here.

(4/43)

byte) Message Type: (Case sensitive.)

Refer to section 4.2 “Message block format”for more details.

ASCII 'A' (41h): Command.

ASCII 'B' (42h): Command reply.

ASCII 'C' (43h): Get current parameter from a monitor.

ASCII 'D' (44h): "Get parameter" reply.

ASCII 'E' (45h): Set parameter.

ASCII 'F' (46h): "Set parameter" reply.

-7

bytes) Message Length:

Specify the length of the message (that follows the header) from STX to ETX.

This length includes STX and ETX.

The byte data must be encoded to ASCII characters.

Ex.) The byte data 3Ah must be encoded to ASCII characters '3' and 'A' (33h and 41h).



The byte data 0Bh must be encoded to ASCII characters '0' and 'B' (30h and 42h).

4.2 Message block format

“Message block format”is allied to the “Message Type”in the “Header”.

Refer to the section 6 “Message format”for more detail.

）

Get current



parameter

The controller sends this message when you want to get the status of the monitor.

For the status that you want to get, specify the “OP code page”and “OP code”,

refer to “Appendix A. Operation code table”.

“Message format”of the “Get current



parameter”is as follows,



Refer to section 5.1 “Get current parameter from a monitor.”for more details.

）

Get Parameter reply

The monitor will reply with the status of the requested item specified by the controller

in the “Get parameter message”.

“Message format”of the “Get parameter reply”is as follows,



Refer to section 5.2 “Get parameter reply”for more details.

）

Set parameter

The controller sends this message to change a setting of the monitor.

Header

Message

Check code

Delimiter

OP code page

OP code

STX Hi Lo Hi Lo ETX

Result OP code

page OP code Type Max value Current Value

STX Hi

Lo Hi

MSB

LSB MSB

LSB ETX

(5/43)

Message format of the “Set parameter”is as follows,



Refer to section 5.3 “Set parameter”for more details.

）

Set Parameter reply

The monitor replies with this message for a confirmation of the “Set parameter message”.

Message format of the “Set parameter reply”is as follows,



Refer to section 5.4 “Set parameter reply”for more details.

）

Command

“Command message”format depends on each command.

Usually, this “command message”is used for some non-slider controls and some special operations,

such as “Save current settings”, “Get timing report”, “power control”, “Schedule”, etc. Refer to

section 5.5 “Commands message”for more details.

）

Command reply

The monitor replies to a query from the controller.

“Command reply message”format depends on each command.

Refer to section 5.5 “Commands message”for more details.

4.5 Check code

Check code is the Block Check Code (BCC) between the Header and the End of Message except SOH.

n+1

= D

XOR D

XOR ,,, D

XOR: Exclusive OR

OP code

page OP code Set Value

STX Hi

MSB

LSB ETX

Result OP code

page OP code

Type Max value Requested setting

Value ETX

STX Hi Lo

MSB

LSB MSB LSB

Header

Message

Check code

Delimiter

SOH D

Reserved D

Destination D

Source D

Type D

Length(H) D

Length(L) D

STX D

Data D

| |

ETX D

Check code D

n+1

P P P P P P P P

(6/43)

Following is an example of a Check code (BCC) calculation.

Check code (BCC) D

= D

xor D

xor …xor D

xor D

= 30h xor 41h xor 30h xor 45h xor 30h xor 41h

xor 02h xor 30h xor 30h xor 31h xor 30h xor 30h

xor 30h xor 36h xor 34h xor 03h

= 77h

4.6 Delimiter

Packet delimiter code; ASCII CR(0Dh).

Header Message

SOH

Reserved

Destination

Address Source

Address Message

type Message length STX OP code

page OP code Set Value ETX

Check

code

(BCC)

Delimiter

30 41 30 45 30 41 02 30

03 77 0D

Header

Message

Check code

Delimiter

(7/43)

5. Message type

5.1 Get current Parameter from a monitor.

Send this message when you want to get the status of a monitor.

For the status that you want to get, specify the “OP code page”the “OP code”, refer to



“Appendix



A. Operation code table”.

byte) STX: Start of Message

ASCII STX (02h)

-3

bytes) OP code page: Operation code page.

Specify the “OP code page”for the control which you want to get the status.

Refer to “Appendix A Operation code table”for each item.

OP code page data must be encoded to ASCII characters.

Ex.) The byte data 02h must be encoded to ASCII characters '0' and '2' (30h

and 32h).

OP code page 02h -> OP code page (Hi) = ASCII '0' (30h)

OP code page (Lo) = ASCII '2' (32h)

Refer to Operation code table. (Appendix A)

–5

bytes) OP code: Operation code

Refer to “Appendix A Operation code table”for each item.

OP code data must be encoded to ASCII characters.

Ex.) The byte data 3Ah must be encoded to ASCII characters '3' and 'A' (33h and 41h).

OP code 3Ah -> OP code (Hi) = ASCII '3' (33h)

OP code (Lo) = ASCII 'A' (41h)

Refer to Operation code table.

byte) ETX: End of Message

ASCII ETX (03h)

5.2 "Get parameter" reply

The monitor replies with a current value and the status of the requested item (operation code).

byte) STX: Start of Message

ASCII STX (02h)

-3

bytes) Result code.

OP code page

OP code

STX Hi Lo Hi Lo ETX

-3

–5

Result OP code page

OP code

Type Max value Current Value

STX

Hi Lo

Hi Lo Hi Lo

MSB

LSB MSB

LSB ETX

-3

–5

–7

-9

-13

-17

(8/43)

These bytes indicate a result of the requested commands as follows,

00h: No Error.

01h: Unsupported operation with this monitor or unsupported operation under currentcondition.

This result code from the monitor is encoded to ASCII characters.

Ex.) The byte data 01h is encoded to ASCII character '0' and '1' (30h and 31h).

–5

bytes) OP code page: Operation code page.

These bytes indicate a replying item's OP code page.

This returned value from the monitor is encoded to ASCII characters.

Ex.) The byte data 02h is encoded to ASCII character '0' and '2' (30h and 32h).

Refer to the operation code table.

–7

bytes) OP code: Operation code

These bytes indicate a replying item's OP code.

This returned value from the monitor is encoded to ASCII characters.

Refer to the operation code table.

Ex.) The byte data 1Ah is encoded to ASCII character '1' and 'A' (31h and 41h).

-9

bytes) Type: Operation type code

00h: Set parameter

01h: Momentary

Like the Auto Setup function which automatically changes the parameter.

This returned value from the monitor is encoded to ASCII characters.

Ex.) The byte data 01h is encoded to ASCII character '0' and '1' (30h and 31h).

-13

bytes) Max. value: Maximum value which monitor can accept. (16bits)

This returned value from the monitor is encoded to ASCII characters.

Ex.) '0','1','2' and '3' means 0123h (291)

-17

bytes) Current Value: (16bits)

This returned value from the monitor is encoded to ASCII characters.

Ex.) '0','1','2' and '3' means 0123h (291)

byte) ETX: End of Message

ASCII ETX (03h)

5.3 Set parameter

Send this message to change monitor’s adjustment and so on.

The controller requests a monitor to change value.

byte) STX: Start of Message

ASCII STX (02h)

-3

bytes) OP code page: Operation code page

OP code page

OP code

Set Value

STX

Hi Lo Hi

MSB

LSB ETX

-3

-5

-9

(9/43)

This OP code page data must be encoded to ASCII characters.

Ex.) The byte data 02h must be encoded to ASCII '0' and '2' (30h and 32h).

Refer to the Operation code table.

-5

bytes) OP code: Operation code

This OP code data must be encoded to ASCII characters.

Ex.) OP code 1Ah -> OP code (Hi) = ASCII '1' (31h)

OP code (Lo) = ASCII 'A' (41h)

Refer to the Operation code table.

-9

bytes) Set value

: (

16bit)

This data must be encoded to ASCII characters.

Ex.) 0123h -> 1

(MSB) = ASCII '0' (30h)

= ASCII '1' (31h)

= ASCII '2' (32h)

(LSB)

= ASCII '3' (33h)

byte) ETX: End of Message

ASCII ETX (03h)

5.4 "Set parameter" reply

The Monitor echoes back the parameter and status of the requested operation code.

byte) STX: Start of Message

ASCII STX (02h)

-3

bytes) Result code

ASCII '0''0' (30h, 30h): No Error.

ASCII '0''1' (30h, 31h): Unsupported operation with this monitor or unsupported operation under

current condition.

-5

bytes) OP code page: Echoes back the Operation code page for confirmation.

Reply data from the monitor is encoded to ASCII characters.

Ex.) OP code page 02h -> OP code page = ASCII '0' and '2' (30h and 32h)

Refer to Operation code table.

-7

bytes) OP code: Echoes back the Operation code for confirmation.

Reply data from the monitor is encoded to ASCII characters.

Ex.) OP code 1Ah -> OP code (Hi) = ASCII '1' (31h)

OP code (Lo) = ASCII 'A' (41h)

Refer to Operation code table

-9

bytes) Type: Operation type code

Result OP code page

OP code

Type Max value Requested setting

Value

STX

Lo Hi

MSB

LSB MSB

LSB ETX

-3

-5

-7

-9

-13

-17

(10/43)

ASCII '0''0' (30h, 30h): Set parameter

ASCII '0''1' (30h, 31h): Momentary

Like Auto Setup function, that automatically changes the parameter.

-13

bytes) Max. value: Maximum value that monitor can accept. (16bits)

Reply data from the monitor is encoded to ASCII characters.

Ex.) '0''1''2''3' means 0123h (291)

-17

bytes) Requested setting Value: Echoes back the parameter for confirmation. (16bits)

Reply data from the monitor is encoded to ASCII characters.

Ex.) '0''1''2''3' means 0123h (291)

byte) ETX: End of Message

ASCII ETX (03h)

5.5 Commands

"Command message format" depends on each command

Some commands are shown with usage. Refer to

section 7 to 10.

5.5.1 Save Current Settings.

The controller requests for the monitor to store the adjusted value.



Send "OC"(30h, 43h) as Save current settings command.



Complete "Save Current setting" command packet as follows;

ASCII: 01h-30h-41h-30h-41h-30h-34h-02h-30h-43h-03h-CHK-0Dh

SOH-'0'-'A'-'0'-'A'-'0'-'4'-STX-'0'-'C'-ETX-CHK- CR

The monitor replies the packet for confirmation as follows;

SOH-'0'-'0'-'A'-'B'-'0'-'6'-STX-'0'-'0'-'0'-'C'-ETX-CHK- CR

5.5.2 Get Timing Report and Timing reply.

The controller requests the monitor to report the displayed image timing.



Send "07"(30h, 37h) as Get Timing Report command.



Complete "Get Timing Report" command packet as follows;

ASCII: 01h-30h-41h-30h-41h-30h-34h-02h-30h-37h-03h-CHK-0Dh

SOH-'0'-'A'-'0'-'A'-'0'-'4'-STX-'0'-'7'-ETX-CHK- CR

The monitor replies status as the following format;



SS: Timing status byte

Bit 7 = 1: Sync Frequency is out of range.

Bit 6 = 1: Unstable count

Command code

STX

'0' 'C' ETX

Command code

STX '0' '7' ETX

Command SS H Freq. V Freq.

STX

'4'

'E'

Hi Lo MSB

LSB

MSB

LSB

ETX

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