Rockwell Automation 1440-DYN02-01RJ XM Dynamic Measurement Module - Manuel (Page 145)

Publication ICM-UM002F-EN-E - March 2013 145
CIP Objects Appendix B
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.
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.
Instance Attributes
Table B.45 Speed Measurement Object Services
Service
Code Class/Instance Usage Name Description
05
h
Instance Reset Clears Maximum (Peak)
speed to 0.
0E
h
Instance Get_Attribute_Single Returns a single attribute.
10
h
Instance Set_Attribute_Single
Sets a single attribute.
(1)
Table B.46 Tachometer Channel Object Instance Attributes
Attr ID
Access
Rule Name Data Type Description Semantics
3 Get/Set Number of
Pulses per
Revolution UINT The number of signal
pulses per revolution of
the shaft (for example
number of gear teeth). 0 = Tachometer disabled
> 0 = Tachometer enabled
4 Get/Set Auto Trigger BOOL Indicates whether the
trigger level is determined
automatically from the
signal. 0 = Use specified
Trigger
Level, Trigger Slope, and
Hysteresis
1 = Automatically determine
trigger level and trigger slope,
and use the specified
Hysteresis
5 Get/Set Trigger Level REAL The signal level to be
used as the trigger. Volts
6 Get/Set Trigger Slope USINT The slope of the signal at
the threshold crossing to
be used as the trigger. 0 = Positive
1 = Negative