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3. SPECIFICATIONS
MELSEC-A
Table 3.3 Functions List When Using a Dedicated Protocol (Continued)
\E
'unction
3uffer
nemory
jpecial
unction
nodule
?quence
'ogram
icro
mputer
'ogram
'C CPU
Batch read
Batch write
Batch read
I
TR
I
54H. 52H
Batch write
I
TW
I
5 4 ~ . 5 7 ~
Other than
TIC set value
Main
TIC set value
3atch
Other than
TIC set value
TIC set value
I
I
I
I
Other than
TIC set value
Main
MW
4DH.57H
TIC set value
3atch
rite
lother than
I
I
l ~ u b
I T / C l
SW
1
I H , 57H
TIC set value
Batch
Main
1
sub
1
y:
1
SSH, 52H
read
56H, 52H
Batch
Main
write
Batch read
I
KR
I
4BH, 52H
Batch write
I
KW
I
4BH, 57H
Batch read
Batch write
Analysis request
Remote RUN
I
RR
1
52H. 52H
Remote STOP
RS
52H. 53H
PC CPU read
PC
50H,43H
.oopback test
I
IT
IMH,MH
Number of Point
Description
Processed per
Communlcatlons
(1 28 bytes)
Reads the contents of the special function
module buffer memory.
64 words
64 steps
I
Reads TIC set values used in main se-
quence programs.
64 points
Writes TIC set values used in main se-
quence programs.
64 points
Writes subsequence programs.
64 steps
I
Writes TIC set values used in subsequence
64 points
programs.
Reads main microcomputer programs.
Reads submicrocomputer programs.
.
.
128 bytes
Writes main microcomputer programs.
Writes submicrocomputer programs.
I
Reads comment data.
128 bytes
Writes comment data.
Reads parameters from PC CPU.
128 bvtes
- -
~,
~
-
-
Writes parameters to PC CPU.
Causes PC CPU to acknowledge and check
-
rewritten parameters.
Request remote runlstop of PC CPU.
I
-
Reads the type of PC CPU: A1 N, A2N. A3N.
A3H
Turns ON and OFF the global signal of the
point
AJ71C24 loaded in each PC CPU system.
Data length
Send request is initiated by a PC CPU.
specified in the
(Available in
a
1
:1
ratio system.)
sequence pro-
gram. (Max.
1760 words)
Echoes unchanged characters back to the
254
characters
computer.
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