That would be fantastic if you could get me the pinouts Hugo. Thanks.

I accept that buffering the signals is going to need buffering and I was probably going to do that anyway. RS485 buffers is a good idea - I've never thought of that before. The drivers we use are slew rated limited for EMI (limited to something like 150kHz) from memory which is possibly why it didn't click. It's definitely a good idea but I'll see what else I have lying around.

Hopefully everything is unidirectional too.