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)
Summary of Contents for NX-SIH400
Page 4: ...Introduction 2 NX series Safety Control Unit User s Manual Z930 ...
Page 46: ...Revision History 44 NX series Safety Control Unit User s Manual Z930 ...
Page 108: ...2 Specifications 2 42 NX series Safety Control Unit User s Manual Z930 ...
Page 132: ...3 Installation and Wiring 3 24 NX series Safety Control Unit User s Manual Z930 ...
Page 148: ...4 Safety Control Unit Operation 4 16 NX series Safety Control Unit User s Manual Z930 ...
Page 216: ...5 System Configuration and Setup 5 44 NX series Safety Control Unit User s Manual Z930 ...
Page 306: ...6 Programming 6 90 NX series Safety Control Unit User s Manual Z930 ...
Page 390: ...8 Calculating Safety Reaction Times 8 12 NX series Safety Control Unit User s Manual Z930 ...
Page 412: ...11 Safety Data Logging 11 10 NX series Safety Control Unit User s Manual Z930 ...
Page 504: ...12 Troubleshooting 12 92 NX series Safety Control Unit User s Manual Z930 ...
Page 554: ...l I O Map Settings Appendices A 42 NX series Safety Control Unit User s Manual Z930 ...
Page 623: ...I Index I 1 NX series Safety Control Unit User s Manual Z930 I ...
Page 625: ......