446 Rockwell Automation Publication 1444-UM001D-EN-P - June 2018
Appendix A CIP Objects
Tacho OK Source Selection
For the main tacho sources (Bus 0, Bus 1, I/O 0 and I/O 1) a dedicated Tacho
OK provision is made and is selected automatically.
For the Local Tacho inputs however, it is sometimes possible to use a local logic
input to provide an OK signal.
The Tacho OK source selection can be used to configure whether this feature is
enabled or not.
To use the corresponding logic input as an OK indication, set the OK source
equal to the Tacho source.
Examples
Tacho source selection 1
• Tacho OK source selection = 1 (uses local Logic Input 0)
• Any other value results in permanent Tacho OK state.
Tacho source selection 2
• Tacho OK source selection = 2 (uses local Logic Input 1)
• Any other value results in permanent Tacho OK state.
When the local Logic Inputs are used as described in the previous examples,
leave open for a Tacho OK state and short the appropriate input to trigger a
Tacho Fail condition.
Table 178 - Common Services
Service
Code
Implementation Service Name Description of Service
Class Instance
0x05 x x Reset Reset the peak hold speed (RPM - max)
0x0E x x Get Attribute Single Returns the contents of the specified attribute
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