Let me add, that it would be better to ask us about a commercial converter, before buying. Post a link, and we will tell you, if it is a suitable one.
@Sirnoname
You did the wiring by removing the RS485 connector, and plugged the wires directly to the converter.
I would recommend to use a second RS485 (adapter)cable, to prevent cutting off the SCN5 connector.
SCN5 -> RS485 cable -> female/male RS485 connection -> RS485 cable -> converter
It would prevent loosing warranty. As well the used colors inside the SCN5 cable could change.
Do you know the marking of the SNC5 RS485 connector? Is it industrial standard?
Regards
Christian

Germany - Frankfurt/M
Montreal/Canada
Ohio, USA