FB1.PSCALE
General Information
Type R/W Parameter
Description Sets position scaling value for fieldbus transferred position objects.
Units N/A
Range 0 to 32
Default Value 20
Data Type Integer
See Also N/A
Start Version M_01-00-00-000
Fieldbus Index/Subindex Object Start Version
Modbus 304 M_01-03-00-000
Description
Position values transfered over fieldbus are converted from native 64-bit values to a maximum 32-bit position
value. This parameter sets the resolution/revolution of position values back to the controller.
FB1.PSCALE determines the counts per revolution of position values delivered by fieldbus. The default value is
20, which yields 2^20 counts/revolution. This scaling is used for CAN PDOs 6064 (Position Actual Value) and
60F4 (Following Error Actual Value).
Example
The drive always works internally with 64-bit position values. The drive internal 64-bit actual position should con-
tain the following value:
0x0000.0023.1234.ABCD
The lower 32 bits represent the mechanical angle of the feedback. The upper 32 bits represent the number of
turns.
FB1.PSCALE = 20
The 32-bit position is: 0x0231234A
FB1.PSCALE = 16
The 32-bit position is: 0x00231234
Related Topics
8.2 Feedback 1
AKD User Guide | FB1 Parameters
Kollmorgen | December 2010 411
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