Hi again,

Ok I've now been able to connnect the display to the controller and have the controller talk back to it. The problem was that when I was using the TTL jumpers I was still using the RS-232 slot and it included the ground. I've switched over to the 4 pin connector with VCC and GND on the ...

We have taken these 3 0 ohm resistors out and placed solder jumpers on the 2 TTL jumpers but when we try to plug it in all that happens is the display goes blank and sometimes gets garbage. The RS-232 port also stops transmitting and recieving data.

Hi all,

I'm trying to switch my LK204-25 Display over to TTL as that is the only thing my controller can output on the RS-232. The manual is a little vague on what jumpers you are suppose to remove from the 232 section. There are 3 and I believe one would be the ground jumper and you would need to ...