I am the owner of a YAMAHA TG-500. For control I use a Roland W-30 keyboard and built-in 16-track MIDI sequencer.

I control various TG-500 parameters through a control change command such as volume, pan, sustain, pitch bend and banks select as well as choosing performance, multi set-ups or voices.

Recently I have been interested in controlling more TG-500 parameters (such as filter sweep or resonance for example) and this is where I am facing few snags. I have read the TG-500 MIDI data format document which lists all the controllable parameters through MIDI sysex commands. But it did not work so far.

The unit is in multimode (internal set 1 for example) with delay and phase chosen as global effects.

I have chosen a piano voice patch on MIDI channel 1 and set the effects send manually at a value of 101

I want to control through MIDI the amount of effect applied to piano, for example set it to 0 (zero) at the start of the song and then somewhere in the middle of the song set it to 90. I have looked at the MIDI chart and the syntax looks like this (Page 4 of the MIDI chart attached here):

(1) MIDI Parameter Change table ( Multi )

$F0 $43 $1n $29 $00 sub_group p_msb p_lsb v_msb v_lsb,$F7

Note) n ; Device Number
s ; parameter sub_group number
p; parameter number
v; parameter value

So the syntax should look something like:

F0 43 $1n 29 00 sub-group p_msb p_lsb v_msb v_lsb F7

Looking at the chart (page 5), s = 1 (instrument 1 piano)
P = 7 (instrument effect send) and
Value = 0 (no effect)




I inserted : F0 43 11 29 00 01 07 00 F7 and sent the command but nothing happened.

I then changed it to F0 43 11 29 00 01 07 00 00 00 F7 again nothing happened.

I read somewhere that 7F was for all receive so I changed the MIDI receive channel to all and inserted F0 43 7F …….. and tried both versions but again nothing happened.

I must be doing something wrong. Can anyone assist me?

By the way if I want to change the instrument memory bank through sysex (parameter 1 of chart on page 5) how is this done? It looks like there are 3 parameters that must be written (inst memory bank, inst memory and off/on for ind1..4)

Thanks in advance.