Modbus
Cellular
Gateway
Index
skipping
is
used
to
reserve
slots
for
new
function
insertion,
when
required.
338
obtaining
information
from
or
controlling
the
Modbus
devices
that
are
attached
to
the
IoT
gateway
via
the
general
Internet
accessing
approach.
The
IoT
Gateway
collects
the
required
information
from
or
executing
the
required
actions
to
the
Modbus
devices
for
the
Modbus
TCP
Master.
The
IoT
Gateway
replies
the
Modbus
TCP
Master
with
the
device
information
or
execution
results.
IoT
Gateway
as
Modbus
TCP
Slave
Scenario
Scenario
Application
Timing
When
the
administrator
of
IoT
Gateway
wants
to
configure
the
gateway
to
be
a
Modbus
TCP
Slave
for
receiving
requests
from
remote
Modbus
TCP
Master,
executing
some
actions
and
making
responses,
then
the
scenario
is
adequate
for
the
application.
The
Modbus
TCP
Master
requests
the
information
of
or
sending
control
commands
to
the
IoT
Gateway,
the
Modbus
TCP
Slave.
And
IoT
Gateway
executes
corresponding
processes
and
replies
the
Modbus
TCP
Master.
Scenario
Description
The
IoT
Gateway
serves
as
the
Modbus
TCP
Slave
to
communicate
with
the
Modbus
TCP
Master,
the
SCADA
Server,
behind
the
"Remote
Gateway"
via
general
Internet
accessing
for
getting
the
status
of
IoT
Gateway
and
controlling
it.
Parameter
Setup
Example
For
Network
‐
B
at
Branch
Office
Following
tables
list
the
parameter
configuration
as
an
example
for
"Modbus
Slave"
function,
as
