Menu
12
Parameter
Parameter description
protocol
Performance
The
variable
selectors
allow
two
source
values
(defined
by
Pr
12.08,
Pr
12.28
and
Pr
12.09,
Pr
12.29)
to
be
combined
as
defined
by
the
mode
It
is
active
when
the
control
has
a
non-zero
value.
structure
Keypad
and
format
Advanced
parameter
descriptions
Serial
comms
(Pr
12.10,
Pr
12.30)
to
produce
an
output
(Pr
12.12,
Pr
12.32)
which
can
be
routed
to
the
destination
parameter
(defined
by
Pr
12.11,
Pr
12.31).
The
actions
of
the
variable
selector
are
defined
by
the
mode
parameter
as
given
below.
If
the
mode
parameter
is
changed
or
the
variable
selector
is
disabled
because
neither
source
is
routed
to
a
valid
parameter
all
the
internal
state
variables
(i.e.
filter
accumulator,
etc.)
within
the
selector
are
reset.
When
the
Sectional
control
mode
is
selected
the
function
is
also
reset,
and
the
output
is
held
at
zero,
when
the
control
(Pr
12.15
or
Pr
12.35)
is
zero.
Sectional
control
The
sectional
control
function
is
intended
to
apply
scaling
and
a
speed
offset
to
a
16
bit
position
value
to
generate
a
new
16
bit
position
value.
The
output
can
be
used
as
an
input
to
the
position
controller
(menu
13)
or
to
generate
an
encoder
simulation
output
via
the
SM-Universal
encoder
plus
module.
This
function
can
be
selected
for
either
variable
selector,
but
the
description
below
relates
to
variable
selector
1.
Position
input
d/dt
4.000 + 12.13
4.000
Speed
input
12.14
Accumulator
%
Position
output
The
position
input
can
be
derived
from
any
parameter,
however
it
is
intended
to
be
used
with
a
position
value
that
has
a
range
from
0
to
65535.
The
input
is
scaled
so
that
as
Pr
12.13
is
varied
between
-4.000
and
4.000
the
proportion
of
the
input
position
change
added
to
the
accumulator
varies
from
0.000
to
2.000
(i.e.
the
change
of
position
input
value
is
added
without
scaling
if
Pr
12.13
is
0.000).
The
remainder
from
the
scaling
division
is
stored
and
then
added
at
the
next
sample
to
maintain
an
exact
ratio
between
the
position
input
and
the
position
output,
provided
the
speed
input
is
zero.
The
controller
only
takes
the
change
of
position
from
the
input
source
parameter,
and
not
the
absolute
value,
so
that
when
the
controller
is
first
made
active
the
output
does
not
jump
to
the
source
position,
but
only
moves
with
any
changes
of
source
position
after
that
point
in
time.
The
range
of
the
output
of
the
accumulator
is
0.00
%
and
100.00
%.
Unlike
other
functions
the
value
is
not
simply
limited,
but
rolls
under
or
over
respectively.
Although
the
output
destination
can
be
any
parameter
it
is
intended
to
be
used
with
a
position
value
that
has
a
range
from
0
to
65535.
The
speed
input
defines
a
speed
offset
with
a
resolution
of
0.1
rpm.
Full
scale
of
the
source
parameter
corresponds
to
1000.0
rpm.
Scaling
may
be
applied
using
Pr
12.14
to
give
a
full
scale
value
of
4000.0
rpm.
The
speed
input
is
added
to
the
accumulator
to
move
the
output
position
forwards
or
backwards
with
respect
to
the
position
input.
164
Mentor
MP
Advanced
User
Guide
www.onxcontrol.com
Issue
Number:
4
Mode
value
Action
Result
0
Select
input
1
output
=
input1
1
Select
input
2
output
=
input2
2
Add
output
=
input1
+
input2
3
Subtract
output
=
input1
-
input
2
4
Multiply
output
=
(input1
x
input2)
/
100.0
5
Divide
output
=
(input1
x
100.0)
/
input2
6
filter
output
=
input1
/
((control
param)s
+
1)
7
Linear
ramp
output
=
input1
via
a
ramp
with
a
ramp
time
of
(control
param)
seconds
from
0
to
100
%
8
Modulus
output
=
|
input1
|
9
Powers
2
control
=
0.02:
output
=
input1
/
100.0
3
2
control
=
0.03:
output
=
input1
/
100.0
control
has
any
other
value:
output
=
input1
10
Sectional
control
control
=
0.00:
disabled,
accumulator
reset
and
output
zero
control
<>
0.00:
output
as
defined
below
12.15
Variable
selector
1
control
12.35
Variable
selector
2
control
Coding
Bit
SP
FI
DE
Txt
VM
DP
ND
RA
NC
NV
PT
US
RW
BU
PS
2
1
1
1
Range
0.00
to
100.00
Default
0.00
Update
rate
Background
