Omron NJ501-1300 User Manual page 310

13 Communications Performance and Communications Load
(3) In the Register Device List, select the connection for which you want to change the RPI,
and click the Edit Button.
(4) The device's Edit Connection Dialog Box will be displayed. Input a new packet interval (RPI)
value, and click the OK Button.
13-14 NJ-series CPU Unit Built-in EtherNet/IP Port User's Manual (W506)