VRF Protocol Gateway
10
Fig. 6.2 Communication method of BACnet and communication method network
topology of Modbus TCP
Internet topological graph statement:
485 bus
: L1 shown in Fig. 6.1 is 485 bus, one 485 bus can connect to 254
gateways at most.
Network table
: L1 shown in Fig. 6.2 is general network cable, the gateway can
connect to BMS via the network cable.
CAN1 network
: L3 shown in Fig. 6.2 is CAN1 bus, which consists of network
and all the outdoor units and indoor units of system; one CAN1 network can connect
to 80 sets of indoor units at most.
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