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BACnet Gateway Kit for Central Air Conditioners
14
RJ45 Interface Connection with Cross Line
3.3.4.2 Connection between the BACnet Gateway and the Client-Side PC
1) Direction Connection with the Cross Communication Line:
10BASE-T or 100BASE-TX
Cross Communication Line
2) Indirection Connection via the Hub with the Parallel Communication Line:
10BASE-T or 100BASE-TX
Parallel Communication Line
HUB
3.3.5 Connection between the BACnet Gateway and the Lower Communication
Device
3.3.5.1 Take some communication module as an example, however, always see the real
interfaces located at the communication module for actual connection.
COM2
Side View of the
Communication Module
Twisted Pair RS485
Communication Line of No Polarity
Soldering
Poin
t
RS485+ RS485-