Mitsubishi Electric AJ71C24-S6 User Manual page 215

8. COMMUNICATIONS USING DEDICATED PROTOCOLS
MELSEC-A
8.1 2.6 Comment memroy readlwrite
(1)
Commands and addresses
Commands and comment data addresses to read and write comment
data are explained below.
(a) ACPU common commands
Processing
Note : o
........
Executable
x
........
Not executable
(b) Comment memory addresses
The area to store comment data is managed using relative addres-
ses from the head address OOH.
For example, for
2K
bytes of parameter comments, the range in
which the addresses may be specified for the head address is O O H
to 7FHH.
1)
Comment memory capacity is 64K bytes
The comment data address range is determined by the
parameter setting.
2)
Comment memory addresses are designated in 4-digit ASCII.
(0000 to FFFF)
3)
A character area error
06H
occurs if the following condition is
not met:
Head address
+
designated number of bytes
-:
comment
memory capacity.
possible to designate a particular device or device number when
reading or writing comment data.
I
Always read or write all data from address OH.
I