Hello Troy,

I'm sorry to inform you that the display is now working. All the fun is gone.

Like I sayd I contacted the PLC manufacturer and they told me to clear PLC send buffer just before sending any characters. This is because in industrial enviroment there could generate some error bytes from ...

Hey Troy,

I've tried it without start and/or end codes, but still not working. There is now TxD block in PLC program that sends data from memory address D1000 and in D1000 there is 0061 0061 0061 in hex so I guess there should be "aaa" in the display, but it says "Matrix Orbital LK204-25". This ...

Hello Troy,

yes some improvement happened and I believe it's very close to succeed.
You mentioned character transmission and I was ment to ask you something about it. I can set start and end codes in PLC port settings. Do I need any? In manual there is many commands that start 0xFE so I tried to ...

Hello Troy,

thank you for your reply.

I changed the settings as you recommended. I also made one important change to the cable. PLC program is now sending clear screen command in every second. Display just doesn't clear, but it's blinking in every second so something is going from PLC to the ...

Is it possible to control this display with programmable logic controller? I made a simple program with CX-programmer to Omron CJ1M just to send a few symbols. Windows terminal (not hyper terminal) show those symbols correctly, but nothing on display. Do I need any kind of start and/or end marks ...