9.4 EIP.PROFUNIT
General Information
Type
R/W
Description
Unit scaling for Velocity and Acceleration values over EtherNet/IP.
Units
N/A
Range
0 to 4,294,967,295
Default
Value
65536
Data Type
Integer
Start Ver-
sion
M_01-05-00-000
Variants Supported
Variant Supported
AKD Base No
AKD with Position Indexer No
AKD EtherCAT No
AKD CANopen No
AKD BASIC No
AKD SynqNet No
AKD EtherNet/IP Yes
AKD Profinet No
AKD sercos
®
III No
AKD-N No
AKD-C No
Fieldbus Information
Fieldbus Index/Subindex
Is 64 bit? Attributes Signed?
Object Start Version
Modbus 1592
No 32-bits No
M_01-06-03-000
Description
Velocity and Acceleration values are scaled according to the EtherNet/IP Position Controller Device stand-
ard. One “Profile Units” scaling value is defined, which affects both velocity and acceleration.
For velocity values, Profile Units gives the number of actual position feedback counts (at 32 bits per revolu-
tion) per second equal to one velocity unit. For acceleration values, Profile Units gives the number of actual
position feedback counts (at 32 bits per revolution) per second^2 equal to one acceleration unit.
From Workbench, this scaling parameter is visible in the EtherNet/IP screen or as EIP.PROFUNIT in the ter-
minal. From EtherNet/IP, this value can be accessed at attribute 0x05 Profile Units of the Position Controller
object.
The default value is 2^16 = 65536, which provides 2^32 / 2^16 = 2^16 counts per second per revolution. A
value of 1 would provide 2^32 / 1 = 2^32 counts per second per revolution.
Related Topics
EIP.POSUNIT (➜ p. 32)
Ethernet/IP Communications | 9 EIP Parameters
Kollmorgen | December 2014 33
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