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05/16/2007
4.2.3.5 Units
For the conversion of different units, the DSP 402 profile provides the so-called
Factor group
. From this group, encoTRive implements the following partial quantity:
4.2.3.5.1 Object 0x608F: Position encoder resolution
This parameter defines the ratio between position increments and motor revolutions:
s
revolution
Motor
increments
Position
resolution
encoder
Position
=
Formula 1: Position encoder resolution
The fraction counter is defined in subindex 1, the denominator in subindex 2.
The default value is
⎥⎦
⎤
⎢⎣
⎡
=
=
s
revolution
Motor
increments
Position
4096
1
4096
resolution
encoder
Position
Default
Formula 2: Default value, position encoder resolution
4.2.3.5.2 Object 0x6090: Speed encoder resolution
This parameter defines the ratio between speed increments per second and motor
revolutions per second:
sec
s
revolution
Motor
sec
increments
Speed
resolution
encoder
Speed
=
Formula 3: Speed encoder resolution
The fraction counter is defined by subindex 1, the denominator by subindex 2.
The default value is
⎥⎦
⎤
⎢⎣
⎡
=
s
revolution
Motor
increments
Speed
5000
2
resolution
encoder
Speed
31
Default
Formula 4: Default value, speed encoder resolution