LUSPSpecClassB

Data Auto-Transmit Message (0B hex)
This message allows a Class at a particular LUSP address to be automatically transmitted by the system at fixed intervals. This is typically used to provide a real time display of headrooom meters and internal control sources (LFOs, etc…). The message consists of a control address and an On/Off state. It is the responsibility of the controlling program to disable this mode when it is no longer needed. Systems under control may optionally support the auto transmit of more than one. Refer to the MIDI spec for the particular product to determine it's capabilities. When the system under control is power cycled, auto transmit is disabled. Like most of the LUSP messages, this message uses "Control Levels" (addresses) to define what Class in the target system it is accessing.

Receive only

Byte # Value HEX Description Notes

1 F0 Sysex ID (Start)

2 06 Lexicon ID

3 0bbb bbbb Product ID

4 0bbb bbbb Device ID 0-127 transmit, 0-126 receive

5 01 Message type

6,7 0n On/Off (1 byte) 0 - turns the mode off
1 - turns the mode on

8-11 0n Auto output rate (2 bytes) This sets the rate (in milliseconds) at which the data type is automatically output. This provides a maximum rate of about once a minute (65 seconds)

12-15 0n Number of control levels (2 bytes) This field defines how many control levels are used in the Class's address. This is a 16 bit field so the address can have up to 64k digits (control levels) (max is defined in the "System Configuration" message)

16-19 0n Control level 0 (A) (address) (2 bytes) This is the first control level. It defines the level 0 (A) control address of the Class. The control level addresses are 16 bit fields so the control addresses can be 64k deep. Note that letters are used to help differentiate between levels and their values.

-- 0n Control level 1 (B) (address) (2 bytes) same as previous

-- 0n Control level 2 (C) (address) (2 bytes) same as previous

-- 0n --- up to Control level 65535 same as previous

--- 0n Checksum This is an optional "Checksum" field. The checksum is the low 7 bits of the sum of all preceeding bytes in the message following the "Message Class".

F7 End of Sysex

An example to auto transmit the "Meters" every 100ms on the MPX G2 is as follows

                                    Number of Control
----header---- On/off Number of ms   levels
F0 06 0B 00 01 01 00 04 06 00 00   03 00 00 00

Level A Level B Level C
01 00 00 00 08 00 00 00 04 00 00 00 F7

Byte #	Value HEX	Description	Notes
1	F0	Sysex ID (Start)
2	06	Lexicon ID
3	0bbb bbbb	Product ID
4	0bbb bbbb	Device ID	0-127 transmit, 0-126 receive
5	01	Message type
6,7	0n	On/Off (1 byte)	0 - turns the mode off 1 - turns the mode on
8-11	0n	Auto output rate (2 bytes)	This sets the rate (in milliseconds) at which the data type is automatically output. This provides a maximum rate of about once a minute (65 seconds)
12-15	0n	Number of control levels (2 bytes)	This field defines how many control levels are used in the Class's address. This is a 16 bit field so the address can have up to 64k digits (control levels) (max is defined in the "System Configuration" message)
16-19	0n	Control level 0 (A) (address) (2 bytes)	This is the first control level. It defines the level 0 (A) control address of the Class. The control level addresses are 16 bit fields so the control addresses can be 64k deep. Note that letters are used to help differentiate between levels and their values.
--	0n	Control level 1 (B) (address) (2 bytes)	same as previous
--	0n	Control level 2 (C) (address) (2 bytes)	same as previous
--	0n	--- up to Control level 65535	same as previous
---	0n	Checksum	This is an optional "Checksum" field. The checksum is the low 7 bits of the sum of all preceeding bytes in the message following the "Message Class".
	F7	End of Sysex