PDP-4270 Volume?

jjames
jjames AMX Sustaining Engineer
in NetLinx Studio
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.
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Comments

  • Jimweir192
    Jimweir192 Junior Member
    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!!
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  • Jimweir192
    Jimweir192 Junior Member
    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"
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  • jjames
    jjames AMX Sustaining Engineer
    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?
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  • Brad.Odegard
    Brad.Odegard Junior Member
    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
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  • jjames
    jjames AMX Sustaining Engineer
    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.
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  • Jimweir192
    Jimweir192 Junior Member
    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...
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  • jjames
    jjames AMX Sustaining Engineer
    Thanks guys! I'll post results as soon as we try this. Hopefully that'll be sometime today. Thanks again! :D
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