MTG
- 59 -
MPC Keypad v4.00
Set One Chain Command
The Set One Chain Sys Ex command allows you to write one Chain to the
keypad. A Chain consists of the following data:
o
13 character ASCII name
o
Up to 18 Links of Chain data (18 Preset numbers). Valid Preset numbers
are in the range of 0 to 199 (decimal). Higher values, such as 255 are
considered “empty” chain links. The first empty chain link indicates end-of
chain to the keypad at run time. These preset links are transmitted over
sys ex in msn/lsn byte pairs.
o
Two bytes of reserved configuration data (both 0).
You can send a smaller command. That is, you can just send what you want and
terminate with an EOX byte. The remainder of the chain you are modifying will
be “disabled” (all links set to 0xFF). Therefore you can set the name and only a
couple of links if that is all you need.
Command:
(hex)
F0
System Exclusive
7D
Manufacturer ID. User settable – default is 7D.
22
Device ID for the MIDI Patch Changer.
33
Command type.
ch_msn
Chain # msn
ch_lsn
Chain # lsn
<
:
13 bytes of ASCII data for the Chain Name
>
<
:
Eighteen Preset “links” in msn/lsn byte pairs.
>
00
Reserved
00
Reserved
F7
End of System Exclusive
Received:
ACK packet
F0 7D 22 33 06 03 41 F7