Question Control viewsonic PX747-4K via rs232


Novice Member

I'm trying to control my projector (Viewsonic PX747-4K) with RS232 (using a usb to seriel cable and have both tried FTDI and Prolific chip cable).
However, I have no luck in doing so and need some help.

I have downloaded several sofware where you can send to rs232 like, hercules, termite, putty, realterm etc

The pdf (see attached file!) have all info but I can't seem to grasp what I'm doing wrong.
The parameters seem correct, but what I think I do wrong is probably the format of what I'm trying to send.

For instance POWER ON is:
0x06 0x14 0x00 0x04 0x00 0x34 0x11 0x00 0x00 0x5D

I converted the above to HEX value:
06 14 00 04 00 34 11 00 00 5D
Binary value
0011 0100 0000 0001 0001 0000 0000 0000 0000 0000 0000 0000 0110 0100

The above HEX code only works in REALTERM which it then responds with 01 14 00 00 00 14 but nothing happens on my projector.

Could someone please help me in the right direction?


  • PX727-4K_PX747-4K_UG_ENG.pdf
    3.9 MB · Views: 59
  • ViewSonic Projector RS232_Eng_R1.19.pdf
    1.7 MB · Views: 76

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