Roland HP237 Service Manual

DIGITAL PIANO Date: Feb. 1, 2000

Model HP-237 MIDI Implementation Version: 1.01

1. Receive Data

■Channel Voice Messages

●Note off

Status 2nd byte 3rd byte 8nH kkH vvH 9nH kkH 00H

n = MIDI channel number : 0H-FH (ch.1-ch.16) kk = note number: 00H-7FH (0-127) vv = note off velocity : 00H-7FH (0-127)

* The velocity values of Note Off messages are ignored.

●Note on

Status 2nd byte 3rd byte 9nH kkH vvH

n = MIDI channel number : 0H-FH (ch.1-ch.16) kk = note number: 00H-7FH (0-127) vv = note on velocity: 01H-7FH (1-127)

* Note numbers outside the range of 15-113 are transposed to the nearest octave within this range. * Transpose function does not affect the recognized note numbers.

●Control Change

* The value specified by a Control Change message will not be reset even by a Program Change, etc.

❍Data Entry (Controller number 6, 38)

Status 2nd byte 3rd byte BnH 06H mmH BnH 26H llH

n = MIDI channel number : 0H-FH (ch.1-ch.16) mm, ll = the value of the parameter specified by RPN

❍Volume (Controller number 7)

Status 2nd byte 3rd byte BnH 07H vvH

n = MIDI channel number : 0H-FH (ch.1-ch.16) vv = Volume: 00H-7FH (0-127), Initial Value = 7FH (127)

* Received volume messages affect received note event levels, and cannot affect internal keyboard notes.

❍Expression (Controller number 11)

Status 2nd byte 3rd byte BnH 0BH vvH

n = MIDI channel number : 0H-FH (ch.1-ch.16) vv = Expression : 00H-7FH (0-127), Initial Value = 7FH (127)

* These message can affect only MIDI notes.

❍Hold 1 (Controller number 64)

Status 2nd byte 3rd byte BnH 40H vvH

n = MIDI channel number : 0H-FH (ch.1-ch.16) vv = Control value : 00H-7FH (0-127) 0-63 = OFF, 64-127 = ON

* These message can affect only MIDI notes.

❍Sostenuto (Controller number 66)

Status 2nd byte 3rd byte BnH 42H vvH * These message can affect only MIDI notes.

n=MIDI channel number: 0H-FH (ch.1-ch.16) vv=Control value: 00H-7FH (0-127) 0-63 = OFF 64-127 = ON

* These message can affect only MIDI notes.

❍Soft (Controller number 67)

Status 2nd byte 3rd byte BnH 43H vvH

n=MIDI channel number: 0H-FH (ch.1-ch.16) vv=Control value: 00H-7FH (0-127) 0-63 = OFF 64-127 = ON

* These message can affect only MIDI notes.

❍Effect 1 (Reverb Send Level) (Controller number 91)

Status 2nd byte 3rd byte BnH 5BH vvH

n=MIDI channel number: 0H-FH (ch.1-ch.16) vv=Control value: 00H-7FH (0-127) 0-63 = OFF 64-127 = ON

❍Effect 3 (Chorus Send Level) (Controller number 93)

Status 2nd byte 3rd byte BnH 5DH vvH

n=MIDI channel number: 0H - FH (ch.1 - ch.16) vv=Control value: 00H - 7FH (0 - 127) 0-63=OFF 64-127=ON

❍RPN MSB/LSB (Controller number 100, 101)

Status 2nd byte 3rd byte BnH 65H mmH BnH 64H llH

n = MIDI channel number: 0H-FH (ch.1-ch.16) mm = upper byte of parameter number specified by RPN ll = lower byte of parameter number specified by RPN

* The value specified by RPN will not be reset even by messages such as Program Change or Reset All Controller.

**RPN** The RPN (Registered Parameter Number) messages are expanded control changes, and each function of an RPN is described by the MIDI Standard. To use these messages, you must first use RPN MSB and RPN LSB messages to specify the parameter to be controlled, and then use Data Entry messages to specify the value of the specified parameter. Once an RPN parameter has been specified, all Data Entry messages received on that channel will modify the value of that parameter. To prevent accidents, it is recommended that you set RPN Null (RPN Number = 7FH/7FH) when you have finished setting the value of the desired parameter.

On the HP-237, RPN can be used to modify the following parameters.

RPN Data entry MSB LSB MSB LSB Explanation 00H 01H mmH llH Master Fine Tuning

mm, ll: 00 00H - 40 00H - 7F 7FH (-100 - 0 - +99.99 cents), Initial Value = 40 00H (±0 cent)

7FH 7FH --- --- RPN null

Set condition where RPN and NRPN are unspecified. The data entry messages after set RPN null will be ignored. (No Data entry messages are required after RPN null). Settings already made will not change. mm, ll: ignored

●Program Change

Status 2nd byte CnH ppH

n = MIDI channel number: 0H-FH (ch.1-ch.16) pp = Program number: 00H..2CH (prog.1..prog.45)

Received program change message are assigned as follows.

prog. tone 1 Piano 1 2 Piano 2 3 -- 4 Harpsichord 5 Vibraphone 6 Electric Piano 1 7 Electric Piano 2 8 Pipe Organ 9 Strings 10 Piano1 + Piano2 11 Piano1 + Harpsichord 12 Piano1 + Vibraphone 13 Piano1 + Electric Piano1 14 Piano1 + Electric Piano2 15 Piano1 + Pipe Organ 16 Piano1 + Strings 17 Piano2 + Harpsichord 18 Piano2 + Vibraphone 19 Piano2 + Electric Piano1 20 Piano2 + Electric Piano2 21 Piano2 + Pipe Organ 22 Piano2 + Strings 23 Harpsichord + Vibraphone 24 Harpsichord + Electric Piano1 25 Harpsichord + Electric Piano2 26 Harpsichord + Pipe Organ 27 Harpsichord + Strings 28 Vibraphone + Electric Piano1 29 Vibraphone + Electric Piano2 30 Vibraphone + Pipe Organ 31 Vibraphone + Strings 32 Electric Piano1 + Electric Piano2 33 Electric Piano1 + Pipe Organ 34 Electric Piano1 + Strings 35 Electric Piano2 + Pipe Organ 36 Electric Piano2 + Strings 37 Pipe Organ + Strings 38 Piano1 + Acoustic Bass 39 Piano2 + Acoustic Bass 40 Harpsichord + Strings 41 Vibraphone + Acoustic Bass 42 Electric Piano1 + Acoustic Bass 43 Electric Piano2 + Acoustic Bass 44 Harpsichord + Pipe Organ 45 Piano1 + Strings

* 10-37 are in Dual Play mode. * 38-45 are in Split Play mode. * Any Program Number other than those listed above that are received by the HP-237 are ignored. * After a Program Change message is received, the sound will change beginning with the next Note-on. Voices already sounding when the Program Change message was received will not be affected.

■Channel Mode Messages

●Reset All Controllers (Controller number 121)

Status 2nd byte 3rd byte BnH 79H 00H

n = MIDI channel number : 0H-FH (ch.1-ch.16)

* When this message is received, the following controllers will be set to their reset values.

Controller Reset value Expression 127 (max) Hold 1 0 (off) Sostenuto 0(off) Soft 0(off)

●Local Control

Status 2nd byte 3rd byte BnH 7BH 00H BnH 7AH vvH

n=MIDI channel number: 0H - FH (ch.1 - ch.16) vv=Value: 00H, 7FH (0, 127) 0=OFF 127=ON

●All Notes Off (Controller number 123)

Status 2nd byte 3rd byte BnH 7BH 00H

n = MIDI channel number : 0H-FH (ch.1-ch.16)

* When All Notes Off is received, all notes on the corresponding channel will be turned

off. However if Hold 1 or Sostenuto is ON, the sound will be continued until these are turned off.

●OMNI OFF (Controller number 124)

Status 2nd byte 3rd byte BnH 7CH 00H

n = MIDI channel number : 0H-FH (ch.1-ch.16)

* The instrument will behave in the same way as it does when an "All Notes Off" message is received. The mode will be OMNI OFF, POLY(Mode 3).

●OMNI ON (Controller number 125)

Status 2nd byte 3rd byte BnH 7DH 00H

n = MIDI channel number : 0H-FH (ch.1-ch.16)

* The instrument will behave in the same way as it does when an "All Notes Off" message is received. The mode will be OMNI ON, POLY(Mode 1).

●MONO (Controller number 126)

Status 2nd byte 3rd byte BnH 7EH mmH

n = MIDI channel number : 0H-FH (ch.1-ch.16) mm = mono number: 00H-10H (0-16)

* The same processing will be carried out as when All Notes Off is received.

●POLY (Controller number 127)

Status 2nd byte 3rd byte BnH 7FH 00H

n = MIDI channel number : 0H-FH (ch.1-ch.16)

* The same processing will be carried out as when All Notes Off is received.

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