Omron V680S-HMD63-ETN User Manual page 246

Section 9
Troubleshooting
About The Ethernet Communication Abnormality
If an Ethernet network is configured into a loop as shown below, broadcast packets are accumulated in the band, and the
communication is disabled. Therefore, do not configure the Ethernet network into a loop.
Sending broadcast storm
When a large amount of broadcast packets or multicast packets flow into the Ethernet network, Reader/Writers may stop its
operation. Please do not send a large amount of packet. Please separate the Reader/Writers from the network segment that
broadcast or multicast packets flow.
RFID System
244
User's Manual
(Modbus TCP)
HUB
HUB
Reader/Writer
Broadcast storm
Communication disabled
HUB