Hello,

Trying to control my Viewsonic PX747-4K via RS232 from a windows 10 PC.
I have a USb to RS232 cable (2 actually, 1 with profilic and one with FTDI cipset). Original so no copys :)

I have the manual which state what commands, baudrates etc should be used.
But I have no luck in controlling it at all.

I've uset, realterm, termite, putty, device monitoring studio, 232Analyzer etc, but the only one I've had success at all with is REALTERM and 9600baud.
If I send the HEX for ON which in the manual is 06 14 00 04 00 34 11 00 00 5D
It responds with 01 14 00 00 00 14

A correct response should be 03 14 00 00 00 14 and the projector starting up :)

I'm at my wits end and has tried finding a solution for this for several days and must no ask for help.

I've attached 2 PDFs, one for my projector, and one other for viewsonics projects in general.
[Link: dropbox.com]
[Link: dropbox.com]

Could someone please point me in the right direction or troubleshoot it?
I know there is nothing wrong with the projector as I've tried another one and I have the same problem which means its ME and not the projector that sucks :(

Thanks in advance!