Rockwell Automation Publication 842E-UM001C-EN-P - September 2016 23
EtherNet/IP Overview Chapter 3
Figure 10 
Attribute 17 (11 hex) Total measuring range
Figure 11 
Update your logic to verify that the encoder is in the RUNNING state before 
executing the message instruction to set the endless shaft attribute. Otherwise 
the attribute will not be maintained upon power cycle.