Omron SYSMAC CJ1W-EIP21 - Manual (Page 305)

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Adjusting the Communications Load Section 10-2
If the packet interval for all connections has been set to the same setting, the
dialog box will show that the usage of capacity for the tag data link's allowable
communications bandwidth is 73.00% and the fastest set value is 5.0 ms.
Method 2: Changing the Packet Interval (RPI) of Only Specific Devices
In this example, we want faster tag data links for devices 192.168.250.1 and
192.168.250.10 only. Click the Set Packet Interval (RPI) Button at the bottom
of the Usage of Device Bandwidth Dialog Box to display the Set Packet Inter-
val (RPI) Dialog Box.
In the Target Device Area, deselect all devices other than 192.168.250.1 and
192.168.250.10 by removing the corresponding check marks. Input 5.0 ms as
the new RPI value, and click the OK Button.
The percentage of the allowed tag data link bandwidth being used (Usage of
Capacity) increases to 74.67% for devices 192.168.250.1 and
192.168.250.10, which indicates that the RPI is set to a higher speed for
these devices’ connections.