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7
Operating modes
182
Festo – GDCP-CMMP-M3/-M0-C-CO-EN – 1510b – English
Homing methods
hex
Description
dec
17h
23
Reference switch in positive direction
1. If reference switch inactive:
Travel at search velocity in positive direction
to the reference switch.
If the stop or limit switch is approached:
Travel at search velocity in positive direction
to the reference switch.
2. Travel at crawling velocity in negative direction
until the reference switch becomes inactive.
This position is taken as the homing point.
3. If this is parameterised: travel at positioning
velocity to the axis zero point.
Reference
switch
1Bh
27
Reference switch in negative direction
1. If reference switch inactive: Travel at search
velocity in negative direction to the reference
switch.
If the stop or limit switch is approached:
Travel at search velocity in positive direction
to the reference switch.
2. Travel at crawling velocity in positive direction
until the reference switch becomes inactive.
This position is taken as the homing point.
3. If this is parameterised: travel at positioning
velocity to the axis zero point.
Reference
switch
21h
33
Index pulse in a negative direction
1)
1. Travel at crawling velocity in negative direction
until the index pulse. This position is taken as
the homing point.
2. If this is parameterised: travel at positioning
velocity to the axis zero point.
Index pulse
22h
34
Index pulse in a positive direction
1)
1. Travel at crawling velocity in positive direction
up to the index pulse. This position is taken as
the homing point.
2. If this is parameterised: travel at positioning
velocity to the axis zero point.
Index pulse
Only possible for motors with encoder/resolver with index pulse.
Limit switches are ignored during travel to the stop.
Since the axis is not to remain at the stop, the travel to the axis zero point must be parameterised and the axis zero point offset
must be ≠ 0.