Omron NX-SID Series User Manual

Ethernet Switches without Multicast Filtering
• Does the total number of packets transmitted to the built-in EtherNet/IP port per second exceed the
maximum number of packets allowed per second?
If it exceeds the maximum number, check and modify the connection settings, including RPI and EPI
values.
• Does the total network bandwidth usage of any transmission path exceed the network bandwidth
that can be set for the path?
If it exceed the bandwidth that can be set for the transmission path, the tag data link and CIP safety
connection may not work properly. If the bandwidth is exceeded, rewire the network or increase the
bandwidth between Ethernet switches (e.g., to 1 Gbps). If these countermeasures are not possible,
change the connection settings, including the RPI settings.
Ethernet Switches with Multicast Filtering
• Does the total number of packets transmitted to the built-in EtherNet/IP port per second exceed the
maximum number of packets allowed per second?
If it exceeds the maximum number, check and modify the connection settings, including RPI and EPI
values.
• Does the total network bandwidth usage of any transmission path exceed the network bandwidth
that can be set for the path?
If it exceed the bandwidth that can be set for the transmission path, the tag data link and CIP safety
connection may not work properly. If the bandwidth is exceeded, rewire the network or increase the
bandwidth between Ethernet switches (e.g., to 1 Gbps). If these countermeasures are not possible,
change the connection settings, e.g., the RPI settings.
• Does the total number of packets transmitted to the built-in EtherNet/IP port per second exceed the
maximum number of packets allowed per second?
If it exceeds the maximum number, check whether the multicast filtering on Ethernet switches is
functioning correctly
. Calculate the number of multicast filters required for each Ethernet switch on
the network, and make sure that the resulting number does not exceed the number of multicast fil-
ters of any Ethernet switch. If the number of multicast filters of an Ethernet switch is not sufficient,
replace it with another switch with enough multicast filters, or modify the connection settings, includ-
ing the RPI and EPI settings.
9 Communications Load
9 - 6
NX-series Safety Control Unit User's Manual (Z930)

Omron NX-SID Series Specifications

General

Brand	Omron
Model	NX-SID Series
Category	Controller
Language	English