426 Rockwell Automation Publication 1444-UM001D-EN-P - June 2018
Appendix A CIP Objects
Dynamix DC
Measurement Object
The DC Measurement Object (0x391) defines configuration of DC overall
measurement by selecting smoothing constants, and definition of measurement
units. One instance is linked to each available transducer channel and is fully
separate from the DC Volts overall value
Table 157 - Object Instances
Instance ID Description
0 DC Measurement Class Instance
1…4 DC measurement setup and data for channels 0…3
• Instances 1 for transducer channel 0, DC measurement
• Instances 2 for transducer channel 1, DC measurement
• Instances 3 for transducer channel 2, DC measurement
• Instances 4 for transducer channel 3, DC measurement
Table 158 - Class Attributes
Attribute
ID
Access
Rule
NV Name Data
Type
Description of
Attribute
Semantics of
Values
1 Get NV Revision UINT Current object revision. Current revision.
8 Get V Enabled Instances STRUCT Bit-wise coding of
enabled DC
measurement instances.
Decoding
information.
BYTE Active instances for
channels 0…3.
BYTE Reserved for full
multiplexing.
BYTE Reserved for full
multiplexing.
Table 159 - Instance Attributes
Attribute ID Access Rule NV Name Data Type Description of Attribute Semantics of Values
1 Get V DC Value REAL Processed DC measurement output.
2 Get V Rod Drop Value REAL Processed rod-drop value output. 0 when rod drop
application is not active
for this channel
3 Get V DC Bias REAL Measured in DC Volts.
The same as attribute 1 of the
Transducer Object
DC Measurement Group of 5 configuration attributes
16 Get V DC Measurement Units ENGUNITS The DC measurement units. Options and selection
criteria
17 Get V DC Measurement TC REAL Time
constant
definition for
DC
measurement
(demanded).
Range: 0.1…60 s, default
of 1
18 Get V DC Measurement Offset REAL Measurement offset in selected
measurement units.
Is added to the
measurement.
Range: -50000…50000
19 Get V DC Measurement Sense
Control
SINT Sense control of the DC measurement
for axial/thrust applications.
0: Active/Normal
1: Inactive/Counter
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