8. Operating modes
Festo P.BE-CMMP-CO-SW-EN 0708NH
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Methods 23 and 27: Homing run to the homing switch
These two methods use the homing switch that is active over only a part of the section.
This homing method is especially useful for round-axis applications, where the homing
switch is activated once per revolution.
With method 23, the drive first moves in a positive direction and with method 27 a
negative direction. The zero position refers to the falling edge from the homing switch.
This can be seen in the two following depictions.
Fig. 8.9: Homing run to the homing switch with positive initial movement
For homing runs to the homing switch, the limit switches first serve
to reverse the search direction. If the opposite limit switch is then
reached, an error is triggered.
Fig. 8.10: Homing run to the homing switch with negative initial movement
Summary of Contents for CMMP Series
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