8.
COMMUNICATIONS USING DEDICATED PROTOCOLS
MEBECIA
8.1
2.4
Sequence
program
read/write
(1)
Commands and step allocation
(a) ACPU common commands
Batch
read
Batch
write
-
Command
Procoulng
Numbor of PC CPU Sta10
Points
Except
TIC
set value
Main
TIC
set value
MR
Except
TIC
sot value
TIC
set value
Except
TIC
set
value
Main
Mw
TIC
set value
Except
TIC
sol
value
TIC
set value
Sub
'
SR
Sub
sw
0 0
main sequence programs.
~~~ ~~
kads subrequrnce program.
64
stops
52H
Reads
TIC
set values used in
points
subsequence programs.
0
00
Writos main sequence pro-
steps
4DH,
57H
.
gram*
points
Writes
TIC
set values used in
0
x
0.
main seauence programs.
0
X
0
1
Writes subsequence program.
I
64
steps
1
o
I
o*
I
x
=H,
57H
64
points
Writes
TIC
set values used in
.-
subseauence Programs.
0
X
0
Note
:
o
...........
Executable
x
...........
Not
executable
Writing during a program run may executed out if all the follow-
1) The PC CPU is A3, A3N, A3H, A3M, A73, or A3A.
2)
The program is not the currently running program (indicates a
subprogram called by the main program, if the
main
program is
being run).
ing
conditions are met:
3) The PC CPU special relay is in the following state:
i)
M9050
(signal flow conversion contact)
.....
OFF
(A3CPU only)
ii)
M9051
(CHG instruction disable)
...............
ON
POINT]
When reading or writing the timedcounter setting values using the se-
quence program read/write command, range designations of
TO
to T255
or CO
to
C255 are possible.
Extended ranges of T256 to
T2047
and C256 to C1023 for AnA CPU
should be used for storing the setting values; read or write the set values
using
the
batch read/write command for devices
(D,
W,
R)
allocated by
parameter setting. (see section
8.7)
8-87
__
_.
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