Quickstart Guide
ABB PLC and drives integration using Modbus RTU
Modbus
RTU
‐
34
‐
PLC
and
drives
integration
Test
the
program
If
the
drive
has
an
active
fault
(“TRIPPED”
output
is
colored
blue)
(1),
then
try
to
reset
by
setting
the
“RESET”
input
=
TRUE
(2).
Double
‐
click
the
input
variable
and
choose
“Write
Values”
from
the
“Online”
menu
(3).
When
the
“READY”
output
is
TRUE
(blue)
(1),
then
set
the
“SPEED_REF”
input
(2)
to
desired
speed
value
and
“START”
input
=
TRUE
(3).
Write
values
from
the
Online
menu
or
Ctrl+F7.
Check
that
the
drive
starts
and
follows
the
given
speed
reference.
Note!
Speed
reference
is
set
in
the
block
input
“SPEED_REF”
as
a
value
between
‐
20000
and
20000,
where
20000
corresponds
to
a
parameter
in
the
drive
(see
chapter
“Drive
configuration”).
