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
Ethernet/IP Communications | 9 EIP Parameters
Kollmorgen | December 2014
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