Rotary Plus Index; Rotary Minus Index - Emerson EZMotion User Manual

6.3.6

Rotary Plus Index

A Rotary Plus Index is used when Rotary Rollover is active. The Rotary Plus Index is similar to an Absolute Index, but it is forced to
go in the positive direction to get to its programmed position. The programmed position for a Rotary Plus Index must be within the
Rotary Rollover range (Posn < Rotary Rollover). Figure 51 compares a Rotary Plus Index to an Absolute Index (Rotary Rollover is
enabled).
Figure 51:
40
o
270
Rotary Rollover: 360
o
0
o
270
o
180
Rotary Plus
(Forced Positive)
Rotary Plus Index Profile
www.controltechniques.com
Starting Position
o
0
o
90
o
180
o o
,
Index Position: 270
Position After Index
o
0
o
o
90 270
o
180
Absolute
(Shortest Path)
o
90
EZMotion User/Programming Guide
Revision: A8