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7
Operating modes
176
Festo – GDCP-CMMP-M3/-M0-C-CO-EN – 1510b – English
There are two reference travel speeds. The higher search velocity (speed_during_search_for_switch) is
used to find the limit switch or the reference switch. Then, to exactly determine the position of the
switch edge, the system switches to crawl speed (speed_during_search_for_zero).
If the drive should not be homed again, but only the position set to a prespecified value, the object
2030
h
(set_position_absolute) can be used
The drive to the zero position under CANopen is normally not a component of the refer
ence travel. If all required variables are know to the motor controller (e.g. because it
already knows the position of the zero pulse), no physical movement is performed.
This behaviour can be revised through the object 6510
h
_F0
h
(compatibility_control,
chap. 5.2) so that travel to zero is always executed.
7.2.2
Description of the Objects
Objects treated in this chapter
Index
Object
Name
Type
Attr.
607C
h
VAR
home_offset
INT32
rw
6098
h
VAR
homing_method
INT8
rw
6099
h
ARRAY
homing_speeds
UINT32
rw
609A
h
VAR
homing_acceleration
UINT32
rw
2045
h
VAR
homing_timeout
UINT16
rw
Affected objects from other chapters
Index
Object
Name
Type
Chapter
6040
h
VAR
controlword
UINT16
6.1.3 Control word (controlword)
6041
h
VAR
statusword
UINT16