Modbus Commission - LG AC Smart 5 Owner's Manual

User
Manual User
Manual
Modbus
Commission Modbus
Commission
Commissioning
is
the
process
of
verifying
the
subsystems
to
achieve
the
owner's
project
requirements
as
intended
by
the
building
owner
and
as
designed
by
the
building
architects
and
engineers.
After
AC
Smart
5
installation,
you
can
check
the
operation
status
of
the
device
by
using
the
web
function
before
connection
with
the
BMS
system.
Creating
of
the
Points.
This
is
NOT
to
be
done
by
LG
since
it
is
directly
related
to
the
BMS
side.
The
BMS
engineer
is
to
carry
out
the
engineering
of
the
Point,
however
LG
is
responsible
for
providing
the
method
of
how
the
Points
are
calculated.
Precautions Precautions
To
use
the
Modbus
feature,
you
must
select
[Settings]
>
[BACnet/Modbus
Setting]
>
[Modbus
TCP
enable]
In
case
of
installing
2
or
more
AC
Smart
5,
you
must
change
[Settings]
>
[BACnet/Modbus
Setting]
>
[Vnet
Number
Setting]
duplicate
among
AC
Smart
5.
The
Vnet
number
is
used
as
a
Slave
ID
of
the
Modbus
protocol
and
can
be
set
to
a
value
from
1
to
247.
The
Read
Single
Coils
command
(Function
Code
1)
can
read
up
to
2,000
commands
at
a
time.
The
Read
Holding
Registers
command
(Function
Code
3)
can
read
up
to
125
at
a
time.
[Settings]
>
[BACnet/Modbus
Setting]
>
[Modbus
TCP
enable]
as
Set
[Settings]
>
[BACnet/Modbus
Setting]
>
[Vnet
Number
Setting]
so
that
the
Vnet
Numbers
are
not
Set.