c
..
F
L.
6.
DATA COMMUNICATIONS USING AN
M
:
N MULTIDROP LINK
MELSEGA
(8)
If
no slave station obtains the access right, the master station transmits
broadcast data to all stations and obtains the access right and performs
data communications with
PC CPUs.
The master station transmits the broadcast data to
all
computers after
completing data communications
with
PC CPUs
to inform slave stations
of
the completion
of
data communications
with
PC CPUs.
(An example
of
data communications using dedicated protocol
1)
*1
'1
C-.
c
c
c..
P
6-
11
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