DMP 4310 5.4 with LG display

[Anastasiya2505]

Hi everyone,

We've got a problem with Cisco DMP 4310 (v. 5.4) and LG display 42WS50. We try to use "Display power on/off" commands via RS-232 but it doesn't work.

We tried built-in commands for Cisco_32N and also tried to create new system tasks with RS-232 hex codes 6b612030312030310d/

6b612030312030300d. Prior to sending these commands we enabled RS-232 control but nothing worked.

Does anyone know maybe there are some issues in new DMP's firmware version?

[jdedell12]

Hi,

I don't know of an RS 232 issue.  I have had issues with LG TVs as some use a different comman string as different LG monitors use different commands.  Here are the two I have used in the pass but not sure if they work on this monitor.

LG

On = rs232.tx_hex=6B612030312030310D  or

rs232.tx_hex=4B412030302030310D

Off = rs232.tx_hex=6B612030312030300D  or

rs232.tx_hex=4B412030302030300D

If neither of these work you will need to lookup the command string for the specific monitor.  I can usally find the proper string but at times it takes a bit of searching.

Good luck

John

[Anastasiya2505]

Thank you, John.

According to the LG official guide rs232 codes for this model are:

On - 6B612030312030310D

Off - 6B612030312030300D 

That was why I thought if it could be problems with the latest DMP's firmware.

[jdedell12]

Anastasiya,

Not sure why it is not working.  I have not tried it on 5.4 but know it works on 5.3.  Have you tried the other commands to see if they work?  It is worth a try and won't hurt anything.

If that does not work might want to open a TAC case to see if there is an issue with 5.4.

Good luck

John

[mjuarez2]

We've run into troubles with faulty RS232 cables. Many of our DMPs were wired, but they just weren't receiving commands.

You might want to try the NEC PDComms tool, which you can download from here:

http://www.necdisplay.com/support-and-services/pdcommstool/Overview

With it, you can send RS232 commands from your computer, and view any response from your device. Then you can trouble shoot, at least ruling out the possibility of a faulty peripheral.

We didn't have any trouble with the 4310 5.4 when we isolated our trouble down to bad cables.

Good luck!

-Michael