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
137
7.2.2 Object 0x6311: Reference value
The reference value is the value that corresponds to 100 % of the input signal. This means that a 100 % input
signal is equal to 16384 increments and a –100 % input signal is equal to –16384 increments. This parameter
depends on the controller hardware. It can be used by the field bus master to scale the setpoint values.
Chapter "2.4.3 Units and prefix parameter", page 12
7.2.3 Limit function
This function limits the value range of the spool position input signal. The limit is defined by setting the upper
and lower limit.
Bit 10 of the status word indicates whether the input signal is being limited or not.
Chapter "5.2.3 Object 0x6041: Status word", page 52
Figure 56: Limit function
ValvePositionControl_DemandValueGenerator
Index
Sub-index
Parameter name
Data type
Access
Per-
sistence
Value
range
Default
0x6311
1
SplReferenceValue
INT16
ro
-
INT16
16384
0x6311
2
Unit
UINT8
ro
-
UINT8
0
0x6311
3
Prefix
INT8
ro
-
INT8
0
Spool position
limit
input
<LowerLimit>
(0x6321)
<StatusWord> (0x6041) Bit 10: Limit value reached
<UpperLimit>
(0x6320)
<UpperLimit>
(0x6320)
<LowerLimit>
(0x6321)
output
input
output
The <UpperLimit> (0x6320) must be greater than the <LowerLimit> (0x6321).
If <LowerLimit> (0x6321) will be set greater than the <UpperLimit> (0x6320), the
<UpperLimit> (0x6320) will be set to the value of the <LowerLimit> (0x6321).
