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2. SYSTEM
CONFIGURATON
/MELSEC-A
(4)
Power supply for the
A2CVO
module and the
A2C
special
function modules
The
A2CVO
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 before the power
is
turned
ON.
See Section
4.7
for details of station setting.
(6)
To
eliminate incorrect input
at
the remote
I/O
modules, design
the
A2C
system considering the following.
a)
Measures on turning
ON
and
OFF
the power
1)
When turning
ON
the power, turn
ON
the remote
I/O
modules first, and then, turn
ON
the
A2C.
Or, turn
ON
the
A2C
and the remote
I/O
modules together
at
the
same time.
2)
When turning
OFF
the power, turn
OFF
the
A2C
first, and
then, turn
OFF
the remote
I/O
modules.
Or,
turn them
OFF
together
at
the same time.
Power supply for the remote
110
modules indicates the following.
1)
UO
module power supply: Power supplied to the
WO
moudle power supply is
converted to
5
VM:
inside the system and used in the internal circuit of the
I/O
module.
2)
Input external power supply: Power supply for input modules
3)
Output external power supply: Power supply for output modules
See the following manual for details.
A2WO
Module User's Manual
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