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5
Setting parameters
84
Festo – GDCP-CMMP-M3/-M0-C-CO-EN – 1510b – English
6094
h
: velocity_encoder_factor
The object velocity_encoder_factor converts all speed values of the application from speed_units into
the internal unit revolutions per 4096 minutes. It consists of numerator and denominator.
Index
6094
h
Name
velocity_encoder_factor
Object Code
ARRAY
No. of Elements
2
Data Type
UINT32
Sub-Index
01
h
Description
numerator
Access
rw
PDO mapping
yes
Units
–
Value Range
–
Default Value
1000
h
Sub-Index
02
h
Description
divisor
Access
rw
PDO mapping
yes
Units
–
Value Range
–
Default Value
1
Calculation of the velocity_encoder_factor is in principle made up of two parts: a conversion factor
from internal length units into position_units, and a conversion factor from internal time units into user-
defined time units (e.g. from seconds into minutes). The first part corresponds to the calculation of the
position_factor; for the second part, an additional factor is added to the calculation:
Parameters
Description
time_factor_v
The ratio between the internal time unit and the user-defined time unit.
(e.g. 1 min =
1
/
4096
4096 min)
gear_ratio
Gear ratio between revolutions at the drive-in (R
IN
) and revolutions at the
drive-out (R
OUT
)
feed_constant
Ratio between revolutions at the drive-out (R
OUT
) and movement in
position_units (e.g. 1 R = 360 degrees)
Tab. 5.6
Speed factor parameters