Rockwell Automation 1203-EN1 EtherNet/IP-to-SCANport Module - Manual (Page 56)

5-4 Using I/O Messaging
When enabled, Reference begins at word 1 (16-bit) in the Output image
and Feedback begins at word 3 in the Input image. The Reference (16
bits) is produced by the controller and consumed by the module. The
Feedback (16 bits) is produced by the module and consumed by the
controller.
The Reference value is a scaled value; it is not an engineering value. For
example, in 1305 drives, the Reference is scaled based on the value of
Parameter 19 - [Maximum Freq] where “32,767” equals the Parameter
19 frequency value, and “0” equals 0 Hz.
Table 5.A shows example
References and their results on a 1305 drive that has its Parameter 19 -
[Maximum Freq] set to 60 Hz (default).
For Reference/Feedback details about other SCANport products, refer to
their respective User Manuals.
Using Reference/Feedback
Table 5.A Example Speed Reference and Feedback for a 1305 Drive
Reference
Value
Scale
Output Speed
Feedback
Value
Percent Value
32767 100% 60 Hz 60 Hz 32767
16384 50% 30 Hz 30 Hz 16384
8192 25% 15 Hz 15 Hz 8192
0 0% 0 Hz 0 Hz 0