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Appendix
Appendix
Switching hubs used to connect REAC devices must meet the
following conditions:
•
We recommend a switching hub that supports 1000BASE-T
(IEEE 802.3ab, Gigabit Ethernet)
•
100BASE-TX interface must be supported (IEEE 802.3u, Fast
Ethernet)
•
Full duplex communication (simultaneous bidirectional
communication) must be supported
Caution when using a switching hub
•
The network propagation time between REAC devices is
approximately 375 microseconds, but if the signal passes
through a switching hub, there will be approximately 200
microseconds of delay for each unit.
•
Up to four switching hubs can be connected in series.
•
Connect REAC devices to a switching hub that supports
100BASE-TX.
•
Carefully read the owner’s manual of the switching hub you use.
Requirements for switching hubs
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