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