Click on NR setup in the Engineering panel to access DVNR setup.
Control of the DVNR is at 57k6 or 115k. The slower rates no longer allow field accurate control of the DVNR. If OFFLINE is shown try the other baud rate. If control is still not possible, then try toggling the first position of the 8 way DIL switch on the DVNR output card.
Select the options that are fitted to the DVNR. Close the panel and then restart Platinum.