In the absolute position detection system, there are the following restrictions on
[Pr. PA06 Number of gear teeth on machine side] and the servo motor speed
(N).
When CMX ≤ 2000, N < 3076.7 r/min
When CMX > 2000, N < 3276.7 - CMX r/min
When the servo motor is operated at a servo motor speed higher than the limit
value, [AL. E3 Absolute position counter warning] will occur.
When the same next station No. is specified as station No. of the current position
and a positioning operation is executed, the motor does not start because the
travel distance is decided as "0".
17.3.1 Indexer mode (idx)
(1) Logic of indexer
The circumference of the load side (360 degrees) can be divided into a maximum of 255 stations.
Positioning is executed to a station selected with "Target point table". The following diagram is an
example for when [Pr. PA14] is set to "0".
Station No. 0
Station No. 254
Station No. 253Station No. 2
Station No. 1
CW direction
The station No. 0 is set as a home position. Set the number of stations with [Pr. PT28].
(2) Rotation direction
There are two operation methods: Rotation direction specifying indexer, which always rotates in a fixed
direction and executes positioning to a station; Shortest rotating indexer, which automatically changes a
rotation direction to the shortest distance and executes positioning to a station.
Rotation direction specifying indexer
Shortest rotating indexer
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