1.
Introduction
The
MDC
‐
700
series
module
is
a
Modbus
Data
Concentrator
which
can
concentrate
data
from
several
Modbus
RTU
slave
devices
with
RS232/RS
‐
485
interface
and
allows
Modbus
TCP
masters
to
read/write
data
via
Ethernet/LAN.
The
Modbus
master
can
use
one
Modbus
command
to
get
all
data
on
those
Modbus
RTU
slave
devices
via
the
MDC
‐
700
concentrator.
In
other
words,
through
the
help
of
a
MDC
‐
700
module,
the
Modbus
RTU
slave
devices
can
be
accessed
over
Ethernet
with
better
read
and
write
performance.
The
MDC
‐
700
series
module
has
the
ability
to
perform
up
to
240
Modbus
RTU
commands
to
read/write
data
from/to
Modbus
RTU
slave
devices
and
allows
up
to
8
Modbus
TCP
masters
to
get
the
polled
data.
The
support
for
Modbus
TCP
protocol
makes
the
MDC
‐
700
well
integrated
into
PC
‐
based
applications
such
as
SCADA
(Supervisor
Control
and
Data
Acquisition)
and
HMI
(Human
Machine
Interface)
programs.
Copyright
©
2014
ICP
DAS
Co.,
Ltd.
All
Rights
Reserved.
∗
E
‐
mail:
‐
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