AKD BASIC User Guide | 6 AKD BASIC Parameters, Operators, Statements
6.15.17 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 Is 64 bit? Attributes Signed? Object Start Version
Modbus 304 No 8 bit No 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 contain 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
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Kollmorgenâ„¢ | March 30, 2012 286
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