Yamaha PSR-540 Owner's Manual - Page 107

MIDI Functions, MIDI and TO HOST terminals, In order to exchange MIDI data between multiple devices - driver

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MIDI Functions MIDI is an acronym that stands for Musical Instrument Digital Interface, which allows electronic musical instruments to communicate with each other, by sending and receiving compatible Note, Control Change, Program Change and various other types of MIDI data, or messages. The PSR-540 can control a MIDI device by transmitting note related data and various types of controller data. The PSR-540 can be controlled by the incoming MIDI messages which automatically determine tone generator mode, select MIDI channels, voices and effects, change parameter values and of course play the voices specified for the various parts. MIDI messages can be divided into two groups: Channel messages and System messages. Below is an explanation of the various types of MIDI messages which the PSR-540 can receive/transmit. q Channel Messages The PSR-540 is an electronic instrument that can handle 16 channels. This is usually expressed as "it can play 16 instruments at the same time." Channel messages transmit information such as Note ON/OFF, Program Change, for each of the 16 channels. Message Name Note ON/OFF Program Change Control Change PSR-540 Operation/Panel Setting Messages which are generated when the keyboard is played. Each message includes a specific note number which corresponds to the key which is pressed, plus a velocity value based on how hard the key is stuck. Voice setting (control change bank select MSB/LSB setting) Mixer, Parameter Edit setting(volume, pan pot, etc.) q System Messages This is data that is used in common by the entire MIDI system. System messages include messages like Exclusive Messages that transmit data unique to each instrument manufacturer and Realtime Messages that control the MIDI device. • The performance data of all songs, styles and Multi Pads is MIDI data. Message Name Exclusive Message Realtime Messages PSR-540 Operation/Panel Setting Reverb/chorus/DSP settings, etc. Clock setting Start/stop operation The messages transmitted/received by the PSR-540 are shown in the MIDI Data Format and MIDI Implementation Chart on pages 138 and 150. MIDI and TO HOST terminals In order to exchange MIDI data between multiple devices, each device must be connected by a cable. There are two ways to connect: from the MIDI terminals of the PSR-540 to the MIDI terminals of an external device using a MIDI cable, or from the TO HOST port of the PSR-540 to the serial port of a personal computer using a special cable. If you connect from the PSR-540 TO HOST terminal to a personal computer, the PSR540 will be used as a MIDI interface device, meaning that a specialized MIDI interface device is not necessary. In the rear panel of the PSR-540, there are two kinds of terminals, the MIDI terminals and the TO HOST terminal. q MIDI IN ......... Receives MIDI data from another MIDI device. q MIDI OUT ..... Transmits the PSR-540's keyboard information as MIDI data to another MIDI device. q TO HOST ..... Transmits and receives MIDI data to and from a personal computer. • When using the TO HOST terminal to connect to a personal computer using Windows, a Yamaha MIDI driver must be installed in the personal computer. The included disk contains the Yamaha MIDI driver. • Special MIDI cables (sold separately) must be used for connecting to MIDI devices. They can be bought at music stores, etc. • Never use MIDI cables longer than about 15 meters. Cables longer than this can pick up noise which can cause data errors. 107 105

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107
MIDI Functions
105
MIDI is an acronym that stands for Musical Instrument Digital Interface, which allows electronic musical instru-
ments to communicate with each other, by sending and receiving compatible Note, Control Change, Program
Change and various other types of MIDI data, or messages.
The PSR-540 can control a MIDI device by transmitting note related data and various types of controller data. The
PSR-540 can be controlled by the incoming MIDI messages which automatically determine tone generator mode,
select MIDI channels, voices and effects, change parameter values and of course play the voices
specified for the various parts.
MIDI messages can be divided into two groups: Channel messages and System messages. Below is an explanation
of the various types of MIDI messages which the PSR-540 can receive/transmit.
●
Channel Messages
The PSR-540 is an electronic instrument that can handle 16 channels. This is
usually expressed as “it can play 16 instruments at the same time.” Channel mes-
sages transmit information such as Note ON/OFF, Program Change, for each of the
16 channels.
●
System Messages
This is data that is used in common by the entire MIDI system. System messages
include messages like Exclusive Messages that transmit data unique to each instru-
ment manufacturer and Realtime Messages that control the MIDI device.
The messages transmitted/received by the PSR-540 are shown in the MIDI Data
Format and MIDI Implementation Chart on pages 138 and 150.
•
The performance data of all
songs, styles and Multi Pads
is MIDI data.
Message Name
PSR-540 Operation/Panel Setting
Note ON/OFF
Messages which are generated when the keyboard is
played.
Each message includes a specific note number which corre-
sponds to the key which is pressed, plus a velocity value
based on how hard the key is stuck.
Program Change
Voice setting (control change bank select MSB/LSB setting)
Control Change
Mixer, Parameter Edit setting(volume, pan pot, etc.)
Message Name
PSR-540 Operation/Panel Setting
Exclusive Message
Reverb/chorus/DSP settings, etc.
Realtime Messages
Clock setting
Start/stop operation
MIDI and TO HOST terminals
In order to exchange MIDI data between multiple devices, each device must be con-
nected by a cable.
There are two ways to connect: from the MIDI terminals of the PSR-540 to the MIDI
terminals of an external device using a MIDI cable, or from the TO HOST port of the
PSR-540 to the serial port of a personal computer using a special cable.
If you connect from the PSR-540 TO HOST terminal to a personal computer, the PSR-
540 will be used as a MIDI interface device, meaning that a specialized MIDI interface
device is not necessary.
In the rear panel of the PSR-540, there are two kinds of terminals, the MIDI terminals
and the TO HOST terminal.
●
MIDI IN
.........
Receives MIDI data from another MIDI device.
●
MIDI OUT
.....
Transmits the PSR-540’s keyboard information as
MIDI data to another MIDI device.
●
TO HOST
.....
Transmits and receives MIDI data to and from a
personal computer.
•
When using the TO HOST
terminal to connect to a
personal computer using
Windows, a Yamaha MIDI
driver must be installed in
the personal computer. The
included disk contains the
Yamaha MIDI driver.
•
Special MIDI cables (sold
separately) must be used for
connecting to MIDI devices.
They can be bought at music
stores, etc.
•
Never use MIDI cables
longer than about 15 meters.
Cables longer than this can
pick up noise which can
cause data errors.