Viconics VT7600F Integration Guide BACnet - Manual (Page 24)

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Figure 5: Correct usage – repeaters are daisy chained to the supervisory controller
and separate daisy chains branch from each repeater.
Do not install repeaters in series, as this may result in network reliability problems. Figure 6 demonstrates an
incorrect use of a repeater in an EIA-485 network.
Figure 6: Incorrect usage – the second repeater in series may result in an
unreliable system