2. SYSTEM CONFIGURATION
--------------------
MELSEC-A
(A) : Twisted-pair data link
module
(8) : Optical/twisted-pair
data
link
module
(C) : Optical data link module
Twisted-pair
shield
cable
.>:
Twisted-pair shield cable
Optical fiber cable
Twisted-pair shield cable
-.
A2CCPU
/
(8)
(A)
\
(C)
/
(8)
I
Fig.
2.2
Connection
of
the
MELSECNET/MINI-S3
Modules
(4) Power
supply
for
the
A2CI/0
module and
the
A2C special function
modules
The
A2CI/0
modules and
the
A2C special function modules require 24
VDC power supply. Use
the
A66PC
power
supply
module
or a general-
purpose
24 VDC power supply.
(5) Both remote I/O modules and remote terminal modules, when used with
the
A2C, need station
number
setting.
•
If
two
or more different modules are set
for
one same station number,
incorrect
input
and
output
will occur. Make sure
that
there
are no
modules which are set for one same station
number
when
the
power
is
turned
ON.
See Section 4.7 for details of station setting.
2-4
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