RS232 for NEC MultiSync P461

Answered Question
May 13th, 2010

Hi everyone,  I'm looking for the RS232 code to auto on/off our NEC

MultiSync P461.  Wonder if anyone has this?

Thanks

Tricia

I have this problem too.
0 votes
Correct Answer by Tomas De Leon about 5 years 1 month ago

Also, can try these:

NEC on:

http://admin:default@:7777/set_param?rs232.tx_hex=01304130413043024332303344363030303103730D

NEC off:

http://admin:default@:7777/set_param?rs232.tx_hex=01304130413043024332303344363030303403760D

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Overall Rating: 5 (1 ratings)
Tomas De Leon Thu, 05/13/2010 - 07:58

Patricia,

You can find the NEC Multisync P461 manual here:

http://www.nec.com.au/media/docs/P461_User_Manual.pdf-cf079321-5c5b-43c9-9e70-8f59835475a9-0.pdf

External Code Codes Manual

http://www.necdisplay.com/cms/documents/UserManuals/External_Control.pdf

http://www.necdisplay.com/cms/documents/UserManuals/S_P_X_Series_ExternalControl.pdf

The RS232 Codes for Power on\off are:

7.2 Power control

1) The controller requests the monitor to control monitor power.

Header

SOH (01h): Start Of Header

'0' (30h): Reserved

Monitor ID: Specify the Monitor ID which you want to change a setting.

Ex.) If Monitor ID is '1', specify 'A'.

'0' (30h): Message sender is the controller.

'A' (41h): Message type is "Command".

'0'-'C (30h, 43h): Message length is 12 bytes.

Message

STX (02h): Start of Message

'C'-'2'-'0'-'3'-'D'-'6' (43h, 32h, 30h, 33h, 44h, 36h): power control command

'0'-'0'-'0'-'1' (30h, 30h, 30h, 31h): Power mode

0001: ON

0002, 0003: Do not set.

0004: OFF (same as the power off by IR)

ETX (03h): End of Message

Check code

BCC: Block Check Code

      Refer to the section 4.5 Check code for a BCC calculation.

Delimiter

CR (0Dh): End of packet

Header Message Check code Delimiter

SOH-'0'-Monitor ID-'0'-'A'-'0'-'C' STX-'C'-'2'-'0'-'3'-'D'-'6'-

'0'-'0'-'0'-'1'-ETX BCC CR

Just use the manuals to construct the codes for your manual.
If this answers your question, Please take time to mark this
discussion answered & rate the response.

Thank You!

T.
mjuarez2@usfca.edu Thu, 09/13/2012 - 16:01

Hi,

If someone could explain this to me, I'd greatly appreciate it. This is in regard to using hexidecimal codes to control an NEC MultiSync from a DMP using an RS232 connector.

When testing the codes to turn off the NEC screen, the follwing codes work:

020100000003

AND

3030220D

However,  this code does not:

0130413041304302433230334436303030340D

What I don't understand is that the above two codes, which do work, are not documented in any NEC manuals, but rather, I found them while searching around on the internet and happen to find a manual on an Elmo expansion board (not at all related and odd beyond all belief, and even stranger, the second of the above two working codes is for a Mitsubishi projector, not even a flatscreen).

The latter, not working, code is painstakingly based on the NEC manual, as follows:

01 Start

30 0 - reserved

41 A - The first monitor in the array

30 0 - Message sender is the controller

41 A - Message type is command

30 0

43 C - This and above one is the message length

02 STX Start the message

43

32

30

33

44

36 - This and above set are the power control command

30

30

30 - Describes the power mode

34 - To turn the power off

33 - To do nothing

32 - To do nothing

31 - To turn the power on

0D - end

So, where did the working code come from? And why won't the approved and blessed NEC codes work? I also tried variations from other posts in this thread and they didn't work either. I'm at a total loss, and I may have slipped unknowingly into an alternate universe, if someone doesn't slap me and get me back out of it.

Thanks!

Michael

abcronin Tue, 08/17/2010 - 19:44

Hi Tomas

I am having some problems determining the correct codes for an NEC multisync LCD4020 pannel

I have the information from the NEC manual but not sure how this translates to the DMP HEX codes

1) The controller requests the monitor to control monitor power.
Header
SOH (01h): Start Of Header
'0' (30h): Reserved
Monitor ID: Specify the Monitor ID which you want to change a setting.
Ex.) If Monitor ID is '1', specify 'A'.
'0' (30h): Message sender is the controller.
'A' (41h): Message type is "Command".
'0'-'C (30h, 43h): Message length is 12 bytes.
Message
STX (02h): Start of Message
'C'-'2'-'0'-'3'-'D'-'6' (43h, 32h, 30h, 33h, 44h, 36h): power control command
'0'-'0'-'0'-'1' (30h, 30h, 30h, 31h): Power mode
0001: ON
0002, 0003: Do not set.
0004: OFF (same as the power off by IR)
ETX (03h): End of Message
Check code
BCC: Block Check Code
Refer to the section 4.5 “Check code” for a BCC calculation.
Delimiter
CR (0Dh): End of packet

Do you have some pointers here?

Cheers

Andy

abcronin Wed, 08/18/2010 - 18:25

Resolved

Using following codes:

st1\:*{behavior:url(#ieooui) } /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman","serif";}

3. Create system task "TV ON"

use type "set"

rs232.tx_hex=3030210D

4. Create system task "TV OFF"

use type "set"

rs232.tx_hex=3030220D

5. RS232 Fetch Settings (This setting will allow you to check the RS232 settings)

Get

p=rs232.*

mrayat Mon, 04/09/2012 - 19:58

Tomas,

would you be able to provide me the codes to power on and off an NEC 462 digital display.

Thanks in advance.


Regards

Moonie

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