PDP-4270 Volume?

jjames

This is our first time having to control the volume on a Pioneer plasma. I know the protocol like the back of my hand and know how the device works. I for some reason cannot get volume control of the thing. I've tried several different strings, and it still doesn't work. Any tips or pointers would be extremely greatful. I really don't want to have to revert to IR control ONLY for volume.

Here's what I'm using:

SEND_STRING dvPDP,"$02,'**VOL050',$03"

I recieve back "$02,'**XXX',$03" from the Plasma. Now, I know that if I send a power on command while it's on or send it the same input twice, I recieve that same string from the Pioneer.

Anyway, I'm a little confused here. Any help would be appreciated.

Jimweir192

I had this before - some of the volume commands just will not function as expected... I will look up what happened / how we got round it and come back... Do recall it being very odd and very frustrating!!

Jimweir192

Had a look - the commands we had issues with was the VOLUPn and VOLDWn

I've just tried with a system here and "$02,$30,$31,'VOL050',$03" returns

Line 28 :: String From [5001:5:1]-[$02VOL050$03] - 18:55:34

first time and

Line 29 :: String From [5001:5:1]-[$02XXX$03] - 18:56:08

every subsequent time

Not sure if that helps... the VOLUPn and VOLDWn just would not work with a 42"

jjames

Excellent! So if the absolutely volume strings work, I can just keep track of it in a variable. How did you come up with / find the $30,$31 portion of the string? Is that in place of the '**' prior to the command?

Brad.Odegard

Re: Pioneer PDP volume

Just tested the 5070 that I have here in our showroom.

The single step volume up and down work correctly with the following commands:

"$02,'**VOLUP1',$03"
"$02,'**VOLDW1',$03"

Sending these I get single stepping of the volume bar on the TV.
I did not test the 10 step, or the max/min commands.

Brad

jjames

I thought I tried those on the 4270 without any luck. Do you have a serial protocol document for the xx70 series? My most recent one is the xx50 series.

Jimweir192

The '**' is a global ID / wildcard and $30,$31 ('01') is just a specific ID... Just habit as the PDP won't send back valid data on request if the ID is not used.

Yeah, the Up / Down worked fine on the 50"s just not on the 42"s...

jjames

Thanks guys! I'll post results as soon as we try this. Hopefully that'll be sometime today. Thanks again!