4. Concepts of the cam disc
23 Festo.P.BE-CMMP-CAM-SW-EN en 1105a
4.6 Modulo positioning
Modulo positioning can be used, for example, when the master encoder signal comes from
a rotary drive or a belt. If positioning goes above or below the limits of the modulo range, a
new modulo segment begins seamlessly.
The range limits should agree with the specifications for the cam
disc definition (see section 4.8; same length of the master period).
4.6.1 Modulo positioning with physical master
With a physical master, after activation of the modulo function, only the upper and lower
area limit have to be specified.
The upper limit of the travel range is never being taken; upon
reaching the upper range limit, the slave controller automatically
switches to the lower range limit.
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