Yamaha FX550 - Manual (Page 42)

Specifications
MIDI Data Format
Reception Format
1. Note On
This message is received on the MIDI channel specified
in the currently selected BANK when CONTROLLER 1
or CONTROLLER 2 is assigned to «KEY NOTE or
«KiEY VEL. When a NOTE ON message is received, the
value of the assigned effect parameter is changed accord­
ing to received the velocity value.
And, for programs of PIl or PI2, this is received as mes­
sage to control pitch shift value. The velocity value is
ignored. Reception is not possible when the base KEY
parameter is OFF.
status 1001 nnnn nnnn = channel number *1
1st data Olddc Idddc kkkkkkk = note number *2
2nd data Ovvv vvvv vvvvvvv = velocity *3
2. Control Change
This message is received on the MIDI channel specified
in the currently selected BANK when CONTROLLER 1
or CONTROLLER 2 is assigned to control number.
When a CONTROL CHANGE message is received, the
value of the assigned effect parameter is changed accord­
ing to the received control value.
status 1011 nnnn nnnn = channel number *1
1st data Occc cccc ccccccc = control number *4
2nd data Ovvv vvvv vvvvvvv = control value *4
3. Program Change
This message is received on the MIDI channel specified
in the currently selected BANK. When a PROGRAM
CHANGE message is received, the effect program
assigned to the received program number in the program
change assignment table of current BANK is selected.
status 1100 nnnn nnnn = channel number * 1
1st data Oppp pppp ppppppp = program number *6
4. Channel Pressure
This message is received on the MIDI channel specified
in the currently selected BANK when CONTROLLER 1
or CONTROLLER 2 is assigned to CHANNEL PRESS.
When a CHANNEL PRESSURE message is received,
the value of the assigned effect parameter is changed
according to the received pressure value.
status 1101 nnnn nnnn = channel number *1
1st data Ovvv vvvv vvvvvvv = pressure value *7
5. Active Sensing
After ACTIVE SENSING has been received, if the inter­
val time is more than 300 milli seconds, the MIDI volume
is set to maximum.
1111 1110 active sensing
6. Timing Clock
For programs of TDL or TMD, when the TYP parameter
is MIDI, the delay time is set to interval time of TIMING
CLOCK.
n i l 1000 timing clock
7. Notes
*1 channel number
nnnn channel number
0 1
15 16
*2 note number
kkkkkkk = 0 — 127
*3 velocity
vvvvvvv =1 — 127
*4 control number
ccccccc =1 — 31, 64 — 95
*5 control value
vvvvvvv = 0 ~ 127
*6 program number
PPP PPPP program number
0 1
127 128
*7 pressure value
vvvvvvv = 0 ~ 127
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