Rs232 Command Control; Rs232 Pin Assignment; Rs232 Serial Port With A Crossover Cable - BenQ LX785 User Manual

RS232 command control

RS232 pin assignment

No. Serial
1 N.C
2 RXD
3 TXD
4 N.C
5 Ground

RS232 serial port with a crossover cable

Function Type
Power Write
Write
Read
Source Write
Selection
Write
Write
Write
Write
Read
Audio Control Write
Write
Read
Write
Write
Write
Read
Audio Source Write
Select
Write
Write
Write
Write
76
No. Serial
6 N.C
7 Short with pin8
8 Short with pin7
9 N.C
1
RX
6
2
TX
7
3
8
4
9
5
Operation
Power On
Power Off
Power Status
COMPUTER/YPbPr
HDMI
HDMI 2
HDMI 3 (MHL)
Composite
Current source
Mute On
Mute Off
Mute Status
Volume +
Volume -
Volume level for customer
Volume Status
Audio pass Through off
Audio - Computer1
Audio - Video/S-Video
Audio - HDMI
Audio - HDMI2
Ground
5
9
4
TX
8
3
7
RX
2
6
1
<CR>*pow=on#<CR>
<CR>*pow=off#<CR>
<CR>*pow=?#<CR>
<CR>*sour=RGB#<CR>
<CR>*sour=hdmi#<CR>
<CR>*sour=hdmi2#<CR>
<CR>*sour=hdmi3#<CR>
<CR>*sour=vid#<CR>
<CR>*sour=?#<CR>
<CR>*mute=on#<CR>
<CR>*mute=off#<CR>
<CR>*mute=?#<CR>
<CR>*vol=+#<CR>
<CR>*vol=-#<CR>
<CR>*vol=value#<CR>
<CR>*vol=?#<CR>
<CR>*audiosour=off#<CR>
<CR>*audiosour=RGB#<CR>
<CR>*audiosour=vid#<CR>
<CR>*audiosour=hdmi#<CR>
<CR>*audiosour=hdmi2#<CR>
ASCII