c
L...
T-
L.
r
L
c
c
L-
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c
c
IO.
COMMUNICATIONS
IN
THE
BIDIRECTIONAL
MODE
MELSEC-A
(b)
User areas (OH
to
FFH and 120H
to
IFFH)
Addrou
OH
FFH
to
md
12OH
7FFH
to
Namo
Send data length storage area
Send data length storage area
Received data length storage
area
Received data length storage
area
Doocripllon
0
The length (words or byte8) of data wrHton to tho sond data storage
aroa, to be transmitted from the AJ71
C24
to the computer, is desig-
natod wHh
a
TO Inatruetion in
a
Hquence program
0
The set value is used
u
it
is to dosignate data length in a message
to
be
ronl
to the computer.
0
The unit of data length is determined by
the
value set at address
1-H.
Sot the send data length within the send data storage area iength,
described below.
0
The data to
be
transmittod to the computor is designated with a TO
0
The buffer memory length and length
of
the
sond data and send data
instruction in a sequence program.
length storage arms aro determinod by the values set at 104H to
105H.
-_-.____._._____-___.------.-.----.----.-.-.-----.--------.--
[
I
Default:
Send data length storage area address
:
OH
Send data storage area address
:
1H to 7FH
The
data length in the message received from the computer
k
written
by an AJ71
C24
as it is as the received data length.
Data length expre8~es the number of worddbytes at the data section
in the mesrage.
The unit of data length is determined by the value set at address
103H.
Transmit the data from the computer within the receive data storage
area length described below.
,._--._.-_-__._-________________________.----.--.--...........
e
The data in the data section in the message roceived from
a
computer
is
transmitted by the AJ71
C24
as
it
is roceived.
0
The buffor memory length and Iongth
of
the receivod
data
and
received data length storage areas are dotermined by
the
values set
at
10BH to 107H.
Default:
Received data length stora area address
:
80H
Received data storage aroa addross
:
81H to FFH
I
10-7
,
.
.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
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