Livid Ohm64 Manual page 9

1-8 Slider 'mute' buttons, from left to right, are:
65, 73, 66, 74, 67, 75, 68, 76
function 1-6:
77, 78, 79, 69, 70, 71
BPM:
87
The Ohm64 responds with ACK when finished processing this command.
0C : Set MIDI Basic Channel
F0 00 01 61 02 0C NN F7
This command sets the MIDI Basic Channel to NN, where 00 through 0F are valid and the rest are reserved.
During operation, incoming Channel messages are ignored if Omni Mode is Off and the Channel does not
match. If Omni Mode in On, then the incoming Channel is not checked, and all messages are interpreted. For
outgoing MIDI messages, the Basic Channel is always used unless an Analog input is mapped to Pitch Bend,
in which case the Channel number is specified by the mapping entry. The Ohm64 responds with ACK when
finished processing this command.
0D : Set MIDI Output Merge
F0 00 01 61 02 0D NN F7
This command allows the Control Surface to merge its messages onto the MIDI output jack, in addition to
USB. NN can be 00 (off) or 01 (on). Other values are reserved.
The Ohm64 responds with ACK when finished processing this command.
0E : Erase entire MIDI Input Map
F0 00 01 61 02 0E F7
This command erases all MIDI Input message mappings. These affect the remote control of LED indicators,
so no remote control will be available immediately after the map is erased. Because there are as many as
(256) possible MIDI Input messages that can be mapped to an LED, and because multiple assignments to the
same LED can cause conflicts, it is best to start the LED indicator mapping process by first erasing all
entries before filling in the desired mappings, no more than (75), preferably. The Ohm64 responds with ACK
when finished processing this command.
0F : Set crossfader Flip (left or right as minimum)
F0 00 01 61 02 0F NN F7
This command allows the crossfader response to be flipped. NN can be 00 or 01. Other values are reserved.
The Ohm64 responds with ACK when finished processing this command.
7E : NAK Negative Acknowledge
F0 00 01 61 02 7E F7
This is intended as a way for the Ohm64 to indicate a problem with the previous message. Unfortunately,
when messages are sent too fast, it becomes impossible for the Ohm64 to reply with anything reliably, even
NAK. The best approach is to wait for ACK (see below) after sending each message, rather than depend on
NAK to indicate an error. The one exception is Recall User Settings, where the Ohm64 will reply with NAK
if the contents of User memory are empty or otherwise corrupted.