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Allen-Bradley 1756 ControlLogix User Manual

Allen-Bradley 1756 ControlLogix
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Chapter 4
252 Rockwell Automation Publication MOTION-RM002H-EN-P-February 2018
Multiple registration events may be active at any time for a given axis, but only one
may be active per registration input. Each event is monitored independently and
may be checked using the appropriate RegEventStatus bit.
Windowed Registration
When the Windowed Reg checkbox is checked, the selected trip state only results
in a registration event if it occurs when the axis is within the window defined by
the minimum and maximum positions as shown below.
Enter values or tag variables for the desired absolute positions that define the
position window within which the selected trip state of the Registration input is
valid. Windowed registration is useful in providing a mechanism to ignore
spurious or random transitions of the registration sensor, thus improving the noise
immunity of high-speed registration inputs.
For linear axes, the values can be positive, negative, or a combination. However,
the Minimum Position value must be less than the Maximum Position value for
the registration event to occur. For rotary axes, both values must be less than the
unwind value set in the motion controller’s machine setup menu. The Minimum
Position value can be greater than the Maximum Position value for registration
windows that cross the unwind point of the axis, as shown below.

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Allen-Bradley 1756 ControlLogix Specifications

General IconGeneral
BrandAllen-Bradley
Model1756 ControlLogix
CategoryController
LanguageEnglish

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