Owner's manual

Publication GMSI10-UM010C-EN-P - May 2010
DeviceNet Objects 103
Instance Attributes
Services
Setting the attributes of this object are not affected by the status of the Device
Mode Object.
1 Attributes can only be set while the device is in Program Mode. See the description of the Device Mode Object
for more information.
Tachometer Channel Object
(Class ID 326
H
)
The Tachometer Channel Object models "front end" processing performed
on a tachometer signal before specific measurements are performed.
Class Attributes
The Tachometer Channel Object provides no class attributes.
Table C.42 Speed Measurement Object Instance Attributes
Attr ID
Access
Rule Name Data Type Description Semantics
3 Get Speed Value REAL The measured speed
value.
CPM
4 Get Status BOOL Indicates if a fault or
alarm has occurred.
0 = Operating without alarms or
faults
1 = Alarm or fault condition
exists. The Speed Value
attribute may not represent the
actual field value.
12 Get/Set Time Constant UINT The time constant value
used for exponential
averaging of the Speed
Value (a low pass filter/
output smoothing filter).
Milliseconds
Table C.43 Speed 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