Roland PCR-80 用户手册

Convenient functions

■

The PCR-30/50/80 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 

1. Press the 

 key before you input the byte at which checksum calculation should begin.

fig.css

The display will indicate “CSS” (Checksum Start). 
If you press the 

 key once again, “CSS” (Checksum 

Start) will be cancelled.

2. Press the 

 button.

3. Continue inputting data.

4. Press the 

 key at the location where the checksum should be inserted.

fig.cs1

The display will indicate “CS1” (Checksum type 1).

5. Press the 

 button.

There are two types of checksum, as follows.

If you want to switch to 

, 

press the 

 key after you press 

 in step 4. To switch 

back to 

, press the 

key.

This is the method used by Roland and most other 
manufacturers

Select this if the method other than type 1 is used

[2]

[CHECKSUM]

[1]

*1

[CHECKSUM]