Attribute Semantics - Allen-Bradley 1444-TSCX02-02RB User Manual

Table 177 - Instance Attributes (continued)
21 Get V
24 Get V
25 Get V
Trigger threshold for the main module is fixed at 2.5V.

Attribute Semantics

Tacho Source Selection
This selection defines which source to use for this tacho and speed processing
input.
Value Description
0 OFF
1 Local TTL Tacho Input 0
2 Local TTL Tacho Input 1
3 Tacho Bus 0
4 Tacho Bus 1
5 mapped to I/O data Speed 0 (Fixed source locations for data and OK status)
6 mapped to I/O data Speed 1 (Fixed source locations for data and OK status)
Higher Values Reserved
0x00 defines this Tacho as disabled, multiple sources not allowed.
Selection allows theoretically that an equal source can be used for both object
instances.
Rockwell Automation Publication 1444-UM001D-EN-P - June 2018
Tacho Trigger SINT main module has
Slope/Edge configurable edge
detection.
Rate of Change of Group of 2 configuration
Speed attributes.
ROC Delta Time REAL Delta Time: The time
between speed values
that are used to evaluate
the rate of change
ROC TC REAL The time constant that is
applied to the measured
speed values before they
are used for ROC
assessment
CIP Objects Appendix A
0: Positive
1: Negative
Range: 0.1...20 s
Default of 0.5 s
Range: 0.1...20 s
Default of 0.2 s
(are not normally
> ROC delta time)
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