Roland GR-20 manual Offset Min Max Description Hex Dec

Chapitre 6 Appendices

Table 4-4. Patch

offset	ID	min	max	max	Description
(Hex)			(dec)	(hex)
00	PresetPATCH	0	3	03
	Number MSB
01	PresetPATCH	0	127	7F
	Number LSB
02	ATTACK	0	99	63
03	RELEASE	0	99	63
04	CHORUS	0	99	63
05	DELAY/RE-	0	99	63
	VERB
06	LEVEL	0	99	63
07	FREQ	0	99	63
08	RESO	0	99	63
09	TRANSPOSE	0	4	04	0="-2oct", 1="-1oct",
					2="0", 3="+1oct",
					4="+2Oct"
0A	PLAYFEEL	0	4	04	0–3="1"–"4", 5="nd",
					6="St"
0B	EXP PEDAL	0	8	08	0="FV", 1="FL",
					2="b1", 3="b2",
					4="b3", 5="b4",
					6="b5", 7="b6",
					8="EF"
0C	HOLD TYPE	0	3	03	0="H1", 1="H2",
					2="H3", 3="H4"
0D	GLIDE TYPE	0	19	13	00H="d8",01H="d7",
					02H="d6",03H="d5",
					04H="d4",05H="d3",
					06H="d2",07H="d1",
					08H="u1",09H="u2",
					0aH="u3",0bH="u4",
					0cH="u5",0dH="u6",
					0eH="u7", 0fH="u8",
					10H="v1", 11H="v2",
					12H="v3", 13H="v4"
0E	DELAY	0	99	63
0F	Reserve	0	0	00

/Example using RQ1/

To extract all the data of patch USER BANK 50, send the following message to the GR-20.

F0 41 10 00 72 11 01 00 31 00 00 00 00 10 3D F7

/Example using DT1/

If you want to set as the following the EXP PEDAL parameter of patch USER BANK 10 is “FL”, create data as the following and send it to your GR-20.

F0 41 10 00 72 12 01 00 09 0B 01 6A F7

A-1. Decimal VS Hexadecimal

With a MIDI System, the data value, the address, or size in an exclusive message is expressed in 7-bit hexadesimal values.The table below shows decimal value and thier hexadecimal counterparts.

Decimal	Hex	Decimal	Hex	Decimal	Hex	Decimal	Hex
0	00H	32	20H	64	40H	96	60H
1	01H	33	21H	65	41H	97	61H
2	02H	34	22H	66	42H	98	62H
3	03H	35	23H	67	43H	99	63H
4	04H	36	24H	68	44H	100	64H
5	05H	37	25H	69	45H	101	65H
6	06H	38	26H	70	46H	102	66H
7	07H	39	27H	71	47H	103	67H
8	08H	40	28H	72	48H	104	68H
9	09H	41	29H	73	49H	105	69H
10	0AH	42	2AH	74	4AH	106	6AH
11	0BH	43	2BH	75	4BH	107	6BH
12	0CH	44	2CH	76	4CH	108	6CH
13	0DH	45	2DH	77	4DH	109	6DH
14	0EH	46	2EH	78	4EH	110	6EH
15	0FH	47	2FH	79	4FH	111	6FH
16	10H	48	30H	80	50H	112	70H
17	11H	49	31H	81	51H	113	71H
18	12H	50	32H	82	52H	114	72H
19	13H	51	33H	83	53H	115	73H
20	14H	52	34H	84	54H	116	74H
21	15H	53	35H	85	55H	117	75H
22	16H	54	36H	86	56H	118	76H
23	17H	55	37H	87	57H	119	77H
24	18H	56	38H	88	58H	120	78H
25	19H	57	39H	89	59H	121	79H
26	1AH	58	3AH	90	5AH	122	7AH
27	1BH	59	3BH	91	5BH	123	7BH
28	1CH	60	3CH	92	5CH	124	7CH
29	1DH	61	3DH	93	5DH	125	7DH
30	1EH	62	3EH	94	5EH	126	7EH
31	1FH	63	3FH	95	5FH	127	7FH

When expressing a MIDI channel number or a program change number, please notice that the values are less by one .For example, MIDI channel is expressed as 0 through 15 instead of 1 through 16.

The range of 7 bit can express 128 steps from 0 to 127. To express broader range, use several data bytes.

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