Command Details; Channel Selection Parameters; Commands Sent From The Control Computer To The M-400 - Roland M-400 Reference Manual

Command details

Channel selection parameters

Some commands have a parameter that select a channel, DCA group or user fader. These parameters are
called the "channel selection parameter." The relationship between the M-400's channels and channel
selection parameters are shown below.
1.
Input channels
M-400 channels:
Channel Selection Parameter: I1, I2, ... I48
2.
Output channels
M-400 channels:
Channel SelectionParameter:
3.
DCA groups
M-400 groups:
Channel Selection Parameter: DCA1, DCA2, ... DCA8
4.
USER FADER
M-400 faders:
Channel SelectionParameter:

Commands sent from the control computer to the M-400

The following three types of commands are sent from an external device to the M-400.
1.
Control (execution) commands
These commands are used to adjust the volume and to make various settings.
2.
Request commands
These commands are used to check the current state of the M-400's settings.
* After performing a control operation, you should use a request command to check the state of the settings.
3.
Reply commands
Commands such as "ack" and "ERR" are in this category.
These commands are used to reply to the M-400 when a request command is used.
10
CH1, CH2, ... CH48
AUX1, AUX2, ... AUX16, MAIN L, MAIN R
AX1, AX2, ... AX16, MAL, MAR
DCA1, DCA2, ... DCA8
USER1, USER2, ... USER24
U1, U2, ... U24