RS485 and Pelco PTZ protocol

Can anyone offer an example for sending cctv PTZ Pelco protocol codes over RS485.

I see that similar has been asked a while ago without much success, but perhaps someone has got something working since.

I know the Pelco codes are freely available (plus a C# Pelco library which has existed since the Jurassic), and RS485 is certainly commonly used, so I would have thought the only missing ingredient might be the appropiate coms packaging for serial data transmission. Although that is something easier said than done with my skill set, it would not be an unrealistic expectation for my many betters to achieve, so it makes the question worth asking again.