74
Use MIDI functionality
Sys Ex. ASSIGN items
•
Specifying the checksum
.................................................... (p. 74)
•
Specifying the location of the data
................................... (p. 75)
•
Inputting channel/block data
............................................... (p. 76)
■
Specifying the checksum
The PCR-M30/50/80 can automatically calculate the checksum of a system exclusive message
and embed it in the message. In order to use this function, you must use the following
procedure to specify the starting location from which the checksum is calculated, and the
location at which the checksum is inserted. You can also select the type of checksum.
For an actual example, please read the Sys Ex.ASSIGN section
Bend Pitch Control
fig.css
1.
Press the
[CHECKSUM]
key before you input the byte at which
checksum calculation should begin.
The display will indicate “CSS” (Checksum Start).
If you press the
[CHECKSUM]
key once again, “CSS” (Checksum Start)
will be cancelled.
2.
Press the
[ENTER]
button.
3.
Continue inputting data.
fig.cs1
4.
Press the
[CHECKSUM]
key at the location where the checksum should
be inserted.
The display will indicate “CS1” (Checksum type 1).
5.
Press the
[ENTER]
button.
Checksum types
There are two types of checksum, as follows.
Switching the type
fig.cs12
If you want to switch to type 2, press the
[2]
key after you press
[CHECKSUM]
in
step 4. To switch back to type 1, press
the
[1]
key.
1
CHECKSUM TYPE 1
This is the method used by Roland and most other manufac-
turers
2
CHECKSUM TYPE 2
Select this if the method other than type 1 is used
[2]
[CHECKSUM]
[1]
*1 Reference
[CHECKSUM]
*1 The -- area displays the currently set value. If it has not been set, the default setting will be displayed. Even if you change the type or mode
of the MIDI message that is assigned, the default setting will be displayed. This will be lit if the value is the same as the currently set value,
or will blink if the value is different.
PCR-M30/50/80.book 74 ページ ２００５年１１月１０日 木曜日 午後２時４９分
