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5
Setting parameters
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Festo – GDCP-CMMP-M3/-M0-C-CO-EN – 1510b – English
Sub-Index
01
h
Description
numerator
Access
rw
PDO mapping
yes
Units
–
Value Range
–
Default Value
1
Sub-Index
02
h
Description
divisor
Access
rw
PDO mapping
yes
Units
–
Value Range
–
Default Value
1
The following parameters are involved in the calculation formula of the position_factor:
Parameters
Description
gear_ratio
Gear ratio between revolutions at the drive-in (RIN) and revolutions at the drive-
out (ROUT)
feed_constant
Ratio between revolutions at the drive-out (ROUT) and movement in posi
tion_units (e.g. 1 R = 360 degrees)
Tab. 5.4
Position factor parameters
The position_factors is calculated using the following formula:
position_factor
+
numerator
divisor
+
Gearratio * Increments
ń
Revolution
Feedconstant
The position_factor must be written to the motor controller separated into numerators and denomin
ators. This can make it necessary to bring the fraction up to whole integers by expanding it accordingly.
The position_factor must not be larger than 2
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