Rockwell Automation 1440-VAD02-01RA XM-123 Aeroderivative Module - Manual (Page 139)

Publication GMSI10-UM003D-EN-P - May 2010
131
Services
1 Attributes can only be set while the device is in Program Mode. See the description of the Device Mode Object
for more information.
8 Get/Set Damping Factor REAL The damping factor
associated with output
smoothing filter for the
RMS and DC meters (not
used with peak meters). 0.7072 to 1.0
The Damping Factor is used in
conjunction with the Time
Constant to vary the
characteristics of the response
of the filter used in calculating
the Overall Value. An Overall
Value for a measurement with
Damping Factor near 1.0 will
slowly rise or fall for the full
settling time specified by the
Time Constant before reaching
the final value. An Overall
Value for a measurement with
a Damping Factor near 0.7072
will rise or fall quickly and may
overshoot the final value before
reaching the final value for a
given input signal.
The Damping Factor is only used
in conjunction with RMS
measurement types.
9 Get/Set Overall Filter USINT Overall filter type applied
to the input signal before
the measurement is
performed. 0 = None
1 = Low Pass Filter
2-255 Reserved
10 Get/Set Low Pass
Corner
Frequency UINT The corner frequency of
the low pass filter. 200 to 20000 Hz
The Low Pass Corner Frequency
only has meaning while Overall
Filter is set to Low Pass Filter.
Table C.39 Overall Measurement Object Instance Attributes
Attr ID
Access
Rule
Name Data Type Description Semantics
Table C.40 Overall Measurement Object Services
Service
Code
Class/Instance Usage Name Description
0E
h
Instance Get_Attribute_Single Returns a single attribute.
10
h
Instance Set_Attribute_Single
Sets a single attribute.
1