Moog ACV with CANopen bus interface
7 Servo valve functions
Spool position setpoint conditioning / demand value generator
B99224-DV018-D-211, Rev. A, October 2018
148
7.2.7.2 Look-up table
The look-up table contains 257 sampling points and defines the characteristic curve. Intermediate values are
linearly interpolated. The characteristic compensation function is activated with the parameter <Characteris-
ticCompensation_Type> (0x6346) set to –1.
The distances between the input values are fixed to 128 increments per step. The possible input value range
is –16384…16384 increments.
7.2.7.2.1 Object 0x4347: Look-up table
This parameter is for Moog internal use only.
7.2.7.2.2 Object 0x4348: Look-up table
This object contains the output values corresponding to the negative input values.
7.2.7.2.3 Object 0x4349: Look-up table
This parameter contains the output values corresponding to the input value 0.
Index
Sub-index
Input values (fixed values)
E.g. linear output values
(parameter values)
<CharacteristicCompensation_LookUpTable> (0x4348)
1
–16384
–16384
<CharacteristicCompensation_LookUpTable> (0x4348)
2
–16256
–16256
<CharacteristicCompensation_LookUpTable> (0x4348)
3…127
…
…
<CharacteristicCompensation_LookUpTable> (0x4348)
128
–128
–128
<CharacteristicCompensation_LookUpTable> (0x4349)
1
0
0
<CharacteristicCompensation_LookUpTable> (0x434A) 1
128
128
<CharacteristicCompensation_LookUpTable> (0x434A) 2
256
256
<CharacteristicCompensation_LookUpTable> (0x434A) 3…127
…
…
<CharacteristicCompensation_LookUpTable> (0x434A) 128
16384
16384
When an input value is less than –16384, the output value equals the value of sampling point
<CharacteristicCompensation_LookUpTable> (0x4348), sub-index 1.
When a value is greater than 16384, the output value equals the value of sampling point
<CharacteristicCompensation_LookUpTable> (0x434A), sub-index 128.
ValvePositionControl_DemandValueGenerator
Index
Sub-index
Parameter name
Data type
Access
Per-
sis-
tence
Value range
Default
0x4347
0
CharacteristicCompensation_LookUpTable
DOMAIN
rw
Y
None
ValvePositionControl_DemandValueGenerator
Index
Sub-index
Parameter name
Data type
Access
Per-
sis-
tence
Value range
Default
0x4348
1…128
CharacteristicCompensation_LookUpTable
INT16
rw
Y
INT16
0
ValvePositionControl_DemandValueGenerator
Index
Sub-index
Parameter name
Data type
Access
Per-
sis-
tence
Value range
Default
0x4349
0
CharacteristicCompensation_LookUpTable
INT16
rw
Y
INT16
0