Roland KF-90 用户手册

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MIDI organizes things into “channels,” which are numbered 
from 1 through 16. Simply connecting a cable is not enough 
for communication to take place. The connected devices must 
be set to use the same MIDI channels. Otherwise, no sound 
will be produced, and no sounds can be selected.
Select the transmit channel (1–16) of the KF-90.
The channel setting is at “1” when the KF-90 is powered up.
If the keyboard has been split into right-hand and left-hand 
sections, messages from the left-hand section are not sent.
The KF-90 receives messages on all channels from 1 through 
16.

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When connecting a MIDI sequencer, set Local Control to 

“off.” The setting is at “Local Control ON” when the KF-90 is 

powered up.

As illustrated, information describing what has been played 

on the keyboard is passed to the sound module over two 

different routes, (1) and (2). As a result, you hear overlapping 

or intermittent sounds. To prevent this from happening, 

route (1) must be severed, by setting the unit to what is 

known as “Local Off.”

fig.09-

: The keyboard and internal sound generator are 

connected.

fig.09-

: The keyboard and internal sound generator are 

separated. No sound will be produced by the keyboard when 

it is played.

fig.09-

→ When connecting a unit in the Roland MT series, you don’t 

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When Composer Out is active, you can send performance 

data recorded with the KF-90 to a connected MIDI device or 

computer.

When you turn on the power, this is set to “OFF” (data is not 

sent).

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A Program Change is a message that means “change to the 

tone of the specified number.” The device that receives this 

changes to the tone of the corresponding number.

When you choose a Program Change message (Program 

Number), the Program Number will be transmitted to the 

MIDI device connected to the KF-90. The MIDI device that 

receives the Program Number changes the tone to the 

corresponding Program Number.

Normally, the Tone is selected from the 128 Tones available. 

Some MIDI devices, however, have more than 128 Tones. 

With such devices, the Tone is selected through a 

combination of Program Change messages and Bank Select 

messages. There are two parts of a Bank Select message: the 

MSB (Controller 0, with a value of 0–127) and the LSB 

(Controller 32, with a value of 0–127).

→ If you want to know more about how sounds are changed upon 

(1)

MIDI

MIDI

MIDI

MIDI

(2)

IN

IN

OUT

OUT

Sequencer

Memory

Sound

Generator

Each note played is sounded twice

Soft Tru On

Local On

Local On

Sound is emitted

Sound Generator

Local Off

No sound produced

Sound Generator