Yamaha M7CL-32 Service Manual page 209

4.9 Level Meter Data
4.9.1 Format (Parameter change)
When transmission is enabled by receiving Request for Level Meter,
the corresponding metering data will be sent in every 50 millisecond
for 10 seconds.
If metering information is expected to be continuously sent, Request
is needed to be sent in at least every 10 seconds.
Receive
The data will be echoed when [Parameter change ECHO] is ON.
Transmission
When transmission is enabled by receiving Request, the
corresponding metering data will be sent in constant interval for a
given period of time (The interval and time will vary depending on
devices). When rebooted or port setting is changed, the
transmission will be disabled.
When [Parameter change ECHO] is on, the message will be sent
as it is.
STATUS 11110000 F0 System exclusive message
ID No. 01000011 43 Manufacture's ID number (YAMAHA)
SUB STATUS 0001nnnn 1n n=0-15 (Device number=MIDI Channel)
GROUP ID 00111110 3E Digital mixer
MODEL ID 00010001 11 M7CL
DATA CATEGORY 00100001 21 REMOTE LEVEL METER
DATA 0mmmmmmm mm ADDRESS UL
0mmmmmmm mm ADDRESS LU
0mmmmmmm mm ADDRESS LL
0ddddddd dd Data1
: :
EOX 11110111 F7 End of exclusive
4.9.2 Format (Parameter request)
Receive
Data will be received when [Parameter change Rx] is on and the
Device number of both [Rx CH] and SUB STATUS are matched.
The data will be echoed when [Parameter change ECHO] is on.
the corresponding metering data will be sent via [Rx CH] in constant
interval for a given period of time (The interval and time will vary
depending on devices).
When Address UL = 0x7F is received, all metering data
transmission will be immediately stopped [disabled].
Transmission
When [Parameter change ECHO] is on, the message will be sent
as it is.
STATUS 11110000 F0 System exclusive message
ID No. 01000011 43 Manufacture's ID number (YAMAHA)
SUB STATUS 0011nnnn 3n n=0-15 (Device number=MIDI Channel)
GROUP ID 00111110 3E Digital mixer
MODEL ID 00010001 11 M7CL
DATA CATEGORY 00100001 21 REMOTE LEVEL METER
DATA 0mmmmmmm mm ADDRESS UL
0mmmmmmm mm ADDRESS LU
0mmmmmmm mm ADDRESS LL
0ccccccc ch Count H
0ccccccc c l Count L
EOX 11110111 F7 End of exclusive
M7CL-32/M7CL-48
209