LCD2041 (1.5) Problems with Serial connection/PC interface

[skiier3_9]

Hello everyone, I'm new here and have recently ordered a MO LCD-2041 (rev 1.5) for use on a design project at school (UW Madison for those interested). We are having problems displaying anything on the LCD module and any help you guys have would greatly be appreciated:

I have checked and double checked the COM settings in device manager to ensure that the correct bit rate, data bits, parity and stop bits are set correctly. I don't know what to set flow control at since theres no mention of this in the data sheet (but I've tried all three options in Win XP SP2). I have also tried multiple serial cables to be sure that I was using a straight through and not a null cable (again specified in the .pdf). I do not know how to tell the difference between a null and straight through cable. I have also tried the LCD on a different computer (again Win XP SP2).

We are very frustrated that this isn't working as we purchased a MO display because of their reputation as an LCD that is easy to connect to a PC.

TIA for any/all help.

[Miles]

Hello skiier3_9,

Thanks for posting on our forums. The easiest way to establish if you have a straight through cable or not is to perform a continuity test. In this continuity test, pin 1 of the male end should be connected to pin 1 of the female end. Once you have confirmed that you do have a straight through cable, make sure the display is set up to receive RS232 communication at 19200 baud (or any of the available baud rates which we offer). Factory defaut settings are RS232 at 19200 baud.