BenQ Protocol needed

Kenny

Anyone work with a BenQ projector model MP-622C?
BenQ TS is less than helpful. They sent the following:
Code Function Comment
0x06
0x14
0x00
0x03
0x00
0x34
0x11
0x00
0x5c
power on It should be send by hex format

When I asked about checksum, header, LF or CR, the guy said to just send zero 6 times then send zero 14 times and on and on.
I guess that makes sense given that the x means times. :P
Any way does anyone have the protocol doc?
Thanks.

Danny Campbell

Here's what I have for the DX650.

DEFINE_FUNCTION PROJECTOR1_POWER ()
{
    SEND_STRING dvPROJ1,"$BE,$EF,$02,$06,$00,$13,$CE,$AA,$00,$00,$00,$00,$00"       
}

DEFINE_FUNCTION PROJECTOR1_POWER_OFF ()
{
    PROJECTOR1_POWER ()
    WAIT 10
    {
        PROJECTOR1_POWER ()
    }
	
}


DEFINE_FUNCTION PROJECTOR1_RGB()
{
//    SEND_STRING dvPROJ1,"$BE,$EF,$13,$19,$00,$C8,$4B,$01,$DA,$02,$CC,$CC,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$0,$00,$00,$00"  //rgb
    SEND_STRING dvPROJ1,"$BE,$EF,$03,$19,$00,$EA,$ED,$01,$DA,$02,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$0,$00,$00,$00"  //rgb
}

DEFINE_FUNCTION PROJECTOR1_VIDEO()
{
    SEND_STRING dvPROJ1,"$BE,$EF,$03,$19,$00,$29,$EF,$01,$DA,$02,$00,$00,$00,$00,$00,$00,$04,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00,$00"  //VIDEO
}

Notice that to turn the dumb thing off you send the power code twice.
And they gave me the wrong code to switch to the vga input, theirs is commented out.
Not the greatest company I've ever worked with for documentation or technical support.

Danny

TurnipTruck

By far, the worst company I have ever dealt with in terms of professional application. Their products and service are better suited for the disposable projector market of the office supply stores.

TurnipTruck

More..............

Kenny

Thanks guys for the info. Hopefully these will apply to the model 622.
I wish there was good feedback about BenQ but so far even people that I have called haven't said anything good but that the price is perfect for the K-12 market.(cheap)
I'll get back with you in a few weeks once this goes in.

Kenny

Ok, I can now say that I have controlled a BenQ MP622c projector. Don't shoot me.
Attached is the info that I have that works.
An informed source says that BenQ is standardizing the protocol.
Hope this helps everyone that runs into one these.

patb

I laughed when I saw the first line of this document:

"115200 Baud"

What a joke. What are the manufacturers thinking? They want you to place the projector 2 feet away from the controller? What's the point in even doing RS-232 at that baud rate? For anything in the real world and not on a test bench you're going to have to send it 422 and then use a 232/422 converter at the projector.

I had a job recently where we had 30+ Olevia LCD monitors scatterred throughout 2 stories of a complex. We had to use 422 converters for everything. If you can picture how many different ways a simple 3 wire RS-232 connection could be wired wrong by installers just imagine how many different ways they could wire it wrong when you have 5 wires going to the converter and then 3 more wires going from the converter to the monitor. It was a nightmare and it took almost an entire day to get the monitor working and I never changed the code from when I first loaded it.

Thanks for the info by the way. I have a BenQ in my home theater and I'm using the patheticly inadequate IR commands because I was too busy with paying jobs to spend very much time on my own theater. I was hoping to get the RS-232 working as soon as I could, but now it's going to be a real pain because I only pulled a 2 conductor + shield cable down the conduit to the projector and it's WAY too far to have direct RS-232 work at 115,200. Back to the drawing board I guess.....is there wireless RS-232 out yet?