Problems to get DMX to work

[AEK]

Have you tried swapping A/B? Do you have RS485 GND connected?

Yes, I have tried to to change the ports (A/B), but have not connected the GND. Should it be connected?

Tried to use the RS-485 echo test resident script found in the manual for the LM5p-dr.
I tried it from RS485-1 to 3, 1-2, 3-2 and 2-3 with no message in either the log or the error log - is there something special one need to do with the script, I just copied it directly from the manual into a resident script, only changing the name of the port?

Thanks in advance

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No, it doesn't say anything in either the error log or the log and it is connected to the middle rs485 port which should be port rs485-1



But here it says RS485-2 and RS232, according to the datasheet it is not the same.

Here is says rs485-2 has the rs232, while on the system status one can think it's the port 3. Where is it possible to check if I got the correct firmware on the LM?

if you hav 3*rs485 ports, then probably you installed incorrect Firmware, that could be reason of problems.