1st edition, 17-09-2020
7000.05070, 1st edition, 17-09-2020
7000.05070
Product description
10
3.4
Interpretation of position values and handling of position over-
run
In the standard configuration of the AEMT-12/16 L, there is a number range from 0 to
268 435 455 positions (2
16
∙
2
12
– 1). Then the count starts again from the beginning.
Fig. 2:
Position overrun at the range limit
NOTICE!
Damage to mechanics
Positioning exceeding the position overrun leads to a loss of information of the absolute po-
sition and can damage the mechanics.
Ensure that the application travel is within the range limits of the maximum travel.
During commissioning and after a battery change, reset the revolution count of the
encoder using the preset pin, see chap. 4.4, p. 24. By interpreting the data values with
sign (signed), positioning can then be made in both directions of rotation up to the
overrun, see chap. 6, p. 27.
Position limits can be defined (LL, UL) in the controller, which cannot be overrun, see
Fig. 3.
Fig. 3:
Limitation of the travel distance when evaluating the binary data with sign
(signed)
Multiturn
resolution
Mechanical
revolution
Position
overflow
–2
27
+2
27
Preset
UL
LL
Maximum movement distance
Limited movement distance
