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BenQ DV3250 LCDTV Serial Protocol

TurnipTruck Junior Member

August 2005 in NetLinx Studio

Greetings,

I have a system with a BenQ DV3250 LCD TV that I am trying to control serially. I got a protocol sheet from BenQ, but all the set does is echo back everything sent to it.

When powering on the set via the remote, the serial port spits out "Busy wait rescue" in ASCII a few times and when powering it off, you get "Unknown"

I will attach the documents that I have to see what you think. Unfortunately, nothing on the document identifies it as being for this set.

Anyone know of any other protocol to try or any other suggestions?

Thanks.

32xx series factory Protocol.pdf 112.1K

32xx series operation protocol.pdf 29.3K

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Chip Moody Junior Member

August 2005

TurnipTruck wrote:

Unfortunately, nothing on the document identifies it as being for this set.

Aside from the filenames saying "32xx series", and you have a 3250?

So, SEND_STRING BENQ, "X001X' doesn't toggle the power?

- Chip

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TurnipTruck Junior Member

August 2005

Nope. Just echoes all commands back. Nothing added to them or taken away. BenQ says they are trying to get me another protocol sheet to try out.

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Chip Moody Junior Member

August 2005

TT, any luck on this one yet?

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TurnipTruck Junior Member

August 2005

I have not gone into testing further. Although my next step is to send a 0Dh after the command. The factory protocol document makes a very brief reference to "Pressing Enter."

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Chip Moody Junior Member

August 2005

Make sure to try a $0D,$0A then to. I've seen some references to <enter> meaning (just not saying) that the device expects a carriage return / linefeed pair.

- Chip

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TurnipTruck Junior Member

September 2005

Ending the string with a 0Dh makes it work. I have not yet been able to figure out the checksums for the factory protocols yet though.

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