21
Operational Overview
Absolute indexes with Rotary Rollover enabled will take the shortest path to the position
entered in the index position parameter.
Note
Absolute indexes move to positions relative to where the machine was homed using the
Home, or the DefineHome destination.
Incremental Indexes
An incremental index will move the motor a specified distance in the + or - direction
regardless of the starting position. The direction of the incremental index motion is
determined by the sign (+ or -) of the Index Distance parameter.
Incremental Index
Figure 25:
Incremental Index Example
In the example above, the motor starts at 1 rev, travels a distance of 2 revs and stops at 3 revs.
If the same index is initiated a second time, the FM-3 module would move the motor another
2 revs to a position of 5 revs. If initiated a third time, the motor would travel another 2 revs
to a final position of 7 revs. The example below shows this operation.
Figure 26:
Incremental Index Example 2
Incremental Index
Start Position = 1 Rev
Index Distance = 2 Revs
Incremental Index
Start Position = 1 Rev
Index Distance = 2 Revs
Summary of Contents for FM-3
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Page 16: ...2 FM 3 Programming Module Reference Manual Figure 2 FM 3 Programming Module Features ...
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Page 251: ...237 Diagnostics and Troubleshooting Figure 97 Diagnostic Cable DGNE Diagram ...
Page 262: ...248 FM 3 Programming Module Reference Manual ...
Page 264: ...250 FM 3 Programming Module Reference Manual AX4 CEN CDRO ...
Page 265: ...251 Specifications Cable Diagrams ...
Page 266: ...252 FM 3 Programming Module Reference Manual SNCE XXX Cable SNCDD 001 5 Cable ...
Page 267: ...253 Specifications SNCO 003 Cable SNCI 003 Cable ...
Page 268: ...254 FM 3 Programming Module Reference Manual SNCLI 003 Cable ...
Page 272: ...258 FM 3 Programming Module Reference Manual TIA XXX Cable DDS XXX Cable ...
Page 274: ...260 FM 3 Programming Module Reference Manual CMDS XXX Cable CMMS XXX Cable ...
Page 275: ...261 Specifications CFCS XXX Cable ...
Page 276: ...262 FM 3 Programming Module Reference Manual CFCO XXX Cable ...
Page 277: ...263 Specifications CFOS XXX Cable ...
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