Modbus
Cellular
Gateway
Index
skipping
is
used
to
reserve
slots
for
new
function
insertion,
when
required.
340
Modbus
Master
Serial
Port
Single
Mode:
Generic
Modbus
Master
‐
attached
AMIT
Gateway
Modbus
Slave
Serial
Port
Single
Mode:
Generic
Modbus
Slave
‐
attached
AMIT
Gateway
Modbus
Master
AMIT
Gateway
Serial
Port
Simultaneous
Dual
Mode:
Generic
Modbus
Master
‐
attached
Gateway
as
a
Modbus
Slave
as
a
Modbus
Slave
AMIT
Gateway
Serial
Port
Single
Mode:
Generic
Modbus
Slave
as
a
Modbus
Slave
Modbus
Slave
AMIT
Gateway
Serial
Port
Simultaneous
Dual
Mode:
Generic
Modbus
Slave
‐
attached
Gateway
as
a
Modbus
Slave
as
a
Modbus
Slave
When
AMIT
Gateway
operates
in
the
Legacy
Modbus
Slave
‐
Device
Mode
,
the
AMIT
gateway
would
act
as
a
standalone
Modbus
slave
role
in
a
Modbus
network.
Gateway
information
can
be
requested
by
the
existed
SCADA
network
for
Modbus
device
Management.
AMIT
Gateway
supports
simultaneous
dual
mode
operation.
Gateway
can
run
Legacy
Modbus
Slave
‐
Device
Mode
and
either
master
or
slave
of
Modbus
‐
attached
Mode
simultaneously.
The
following
diagram
is
the
AMIT
Modbus
Gateway
configuration
example
of
single
mode
and
simultaneous
dual
mode.
The
Modbus
setting
screen
enables
the
user
to
configure
the
gateway
to
allow
access
Modbus
network
devices
over
the
Ethernet
network.
Once
completed
the
Modbus
settings
in
this
section,
ensure
to
select
Modbus
Operation
Mode
in
Port
Configuration
screen
to
enable
Modbus
communication
on
the
serial
port.
Go
to
Advanced
Network
>
Communication
Bus
>
Port
Configuration
tab.