14 Communications Performance and Communications Load
14-18
NJ/NX-series CPU Unit Built-in EtherNet/IP Port User’s Manual (W506)
When the Detail Button is clicked in the Usage of Device Bandwidth Area, it is apparent that the per-
centage of the allowed tag data link bandwidth being used by each device’s tag data link (Usage of
Capacity) is 40.83%, as shown in the following dialog box.
Method 1: Same Packet Interval Setting for All Connections
The percentage of the allowed tag data link bandwidth being used (Usage of Capacity) was 40.83%
with the RPI set to 120 ms for all of the connections, so the RPI will be set to 40 ms, with a target of
80% or less of the allowable bandwidth.
Click the Set Packet Interval (RPI) Button at the bottom of the Usage of Device Bandwidth Dialog
Box to display the Set Packet Interval (RPI) Dialog Box. Input 40 ms as the new RPI value, then
click the OK Button.
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 74.50% and
the fastest set value is 40 ms.
Checking the Device Bandwidth Usage
Changing Settings
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