Technical Manual PD4-E-M (EtherCAT)
5 General concepts
Metre
Inch
Foot
dimensionless
Motor
Encoder
Gearbox
Linear axis
Rad
Degree, Grade etc.
Revolutions
Encoder increments
Steps
Electrical poles
Gear ratio
Feed constant
Encoder resolution
Pole pairs
Factor
Units
Note
Value changes of all objects that are described in this chapter are not immediately applied in the
Operation enabled state of the CiA 402 Power State Machine. For this to happen, the Operation
enabled state must be exited.
5.3.1 Units
Units of the international unit system (SI) as well as a number of specific units are supported. It is also
possible to specify a power of ten as a factor.
Listed in the following table are all supported units for the position and their values for 60A8
(Speed unit). Depending on the unit that is used, Feed constant (6092
h
) are/is taken into account.
Name
Unit symbol
Value
6091
h
6092
h
Description
meter
m
01
h
yes
yes
Meter
inch
in
C1
h
yes
yes
Inch (=0.0254 m)
foot
ft
C2
h
yes
yes
Foot (=0.3048 m)
grade
g
40
h
yes
no
Gradian (unit of angle,
400 corresponds to 360°)
radian
rad
10
h
yes
no
Radian
degree
°
41
h
yes
no
Degrees
arcminute
'
42
h
yes
no
Arcminute (60'=1°)
arcsecond
''
43
h
yes
no
Arcsecond (60''=1')
mechanical
revolution
B4
h
yes
no
Revolution
Version: 1.0.1 / FIR-v1748
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