444 Rockwell Automation Publication 1444-UM001D-EN-P - June 2018
Appendix A CIP Objects
Dynamix Tacho and Speed
Measurement Object
The Tacho and Speed Measurement Object (class 0x395) defines the
configuration of tacho and speed signals as processed at main module level.
One instance is linked to each available tachometer channel.
Table 175 - Object Instances
Instance ID Description
0 Tacho and Speed Measurement Class Instance
1 Instance 1 represents measurement setup and data for tachometer input 0 and
associated speeds
2 Instance 2 represents measurement setup and data for tachometer input 1 and
associated speeds
Table 176 - 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 - Tacho Signal
Status
BYTE Tacho signal enable
and OK status
Bits 0…1 indicate
tacho enabled status (1
= enabled) Bits 2…3
indicate tacho OK status
(1 = fault)
Table 177 - Instance Attributes
Attribute
ID
Access
Rule
NV Name Data
Type
Description of
Attribute
Semantics of
Values
1 Get V Speed REAL Speed that is based
directly on the tacho
source (equates to a fixed
multiplier of 1).
RPM
2 Get V Factored Speed REAL Processed speed output
(based on a configured
multiplier).
RPM
3 Get V Speed - max REAL Maximum speed
(attribute 1) RPM since
power cycle or last reset of
stored value.
RPM
4 Get V Speed - ROC REAL Rate of change of the
(attribute 1) speed output.
RPM/min
Basic Tacho/Speed Configuration Group of 5 configuration attributes.
16 Get V Tacho Source SINT Choice of source: local
terminal inputs, tacho bus,
I/O data, or OFF.
Selection options
17 Get V Tacho OK Source SINT Choice of OK source when
using the local tacho
inputs.
OK source options
18 Get V Tacho Name SINT[32] Tacho descriptive name. 32 characters
19 Get V Speed Multiplier REAL Definition of multiplier for
the factored Speed
measurement.
Default of 1.
Range: 0.01…100
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