Livid Ohm64 Manual page 10

7F : ACK Positive Acknowledge
F0 00 01 61 02 7F F7
ACK means the previous message was handled correctly. Some messages (e.g. Map Single LED Indicator)
simply reply with a specific command instead of ACK, when more context is needed than a simple
acknowledgment.
MAPPING SUMMARY
Analog to CC; 121 control numbers; 7-bit value
Analog to CC; 32 control numbers; 14-bit value
Analog to Pitch Bend; 16 channels; 14-bit value
Button to Note; 128 note numbers; 1-bit value
Button to CC; 121 control numbers; 1-bit value
Button to MMC; 3 types; no value
LED from Note; 128 note numbers; 1-bit value
LED from CC; 121 control numbers; 1-bit value
MIDI IMPLEMENTATION
The following standard MIDI messages are implemented.
System Real Time:
MIDI System Reset
Channel Mode Messages:
Reset All Controllers
Local Control (connects buttons to corresponding LED indicators)
Poly On / Mono On (both set Omni Off)
Omni On/Off
All Notes Off (turns off all LED indicators)
Controller Numbers:
1B : backlight, 7-bit dimmer
1F : logo, 14-bit (10-bit effective) dimmer
FRONT PANEL CONTROL
The following key combinations allow front panel control of certain settings.
F4+XL Crossfader Flip off (value increase towards the left, default)
F1+XR Crossfader Flip on (value increases towards the right)
F1+M2 Local Control off (LED indicators under external control only)
F1+M4 Local Control on (LED indicators controlled by buttons and external)
F1+M6 Omni off (messages received on Basic Channel only)
F1+M8 Omni on (messages received on all channels)
F2+M6 MIDI out merge off (Control Surface sends on USB only)