a
-
i
u
1.
GENERAL DESCRIPTION
MELSEC-A
2)
When the connection ratio of the computer to the PC CPU
module is m:n:
This method of linking uses more than one computers and mul-
tiple PC CPU modules for up to
32
stations.
Data communications is executed between a computer (which
has acquired the access right through the communications with
other computers) and designated PC CPU stations.
This system is also called a multidrop link system.
w
~-p~#'l~JJ
C
c
P
C
P
_--
nq
c
U
U
U
P
An1
C24
(Station
0)
An1
C24
(Station
1)
An1
C24
(Station
2)
An1
C24
(Won
24)
Max.
32
stations
(Number
of
PC
CPU
stations)
1
:The on-demand function and the data communications in the
bidirectional mode mentioned respectively
in
Section
1.1.1
(l)(b) and
(2)(b)
cannot be used with the multidrop link sys-
tems.
'B
1
I
Y
1-8
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