概念
Communication Ports on RP-C-16C-F-230V
The RP-C provides the following combination of communication ports:
Two Ethernet ports
One USB port
Three RS-485 ports (RJ45)
Ethernet Ports
The two Ethernet ports are labeled:
Ethernet 1
Ethernet 2
The two Ethernet ports are 10/100BASE-TX (RJ45) ports. When both Ethernet ports are enabled, they function as an onboard Ethernet switch. Disabling the second Ethernet port disables the switching function. The switching function enables flexible network topologies. 有关更多信息，请参阅 BACnet/IP Controller Network Topologies . The second port also provides a connection point for a laptop running the Commission mobile application.
有关更多信息，请参阅 Communication Port Wiring .
USB Port
The USB port is of the following type:
USB host port
The USB host port is a USB 2.0 type-A port, which is rated 2.5 W. The USB host port can be used for connection of Wireless Adapter - Advanced to add Zigbee TM wireless connectivity to the RP-C controller. The adapter can be used to extend the controller's point count and bring flexibility in retrofit applications. 有关更多信息，请参阅 Wireless Adapter - Advanced .
有关更多信息，请参阅 Communication Port Wiring .
RS-485 Ports
The three RS-485 ports are labeled:
RS-485 Com A
RS-485 Com B
RS-485 Com C
The RS-485 Com A, Com B, and Com C ports are rated 3 W (24 VDC).
The three RS-485 ports are RJ45 ports. 有关更多信息，请参阅 RJ45 Pinout for the RS-485 Port(s) of the RP-C Controllers .
Each port can be configured to use one of the following three communication protocols for different types of networks:
Sensor bus
Room bus
Modbus
An RP-C can have only one of each network type.
The sensor bus is designed for communication with SpaceLogic Sensor devices. 有关更多信息，请参阅 RP-C Sensor Bus .
The room bus is designed for communication with RP controller expansion modules for connected room solutions. 有关更多信息，请参阅 RP-C Room Bus .
The Modbus (RTU) network can be used for communication with the KNX Modbus gateway (RP-C-EXT-KNX) and standard Modbus devices. 有关更多信息，请参阅 RP-C Modbus .
Default configurations:
Sensor bus on the RS-485 Com A port
Room bus on the RS-485 Com B port
Modbus on the RS-485 Com C port
有关更多信息，请参阅 Communication Port Wiring .
Hardware Overview
RP-C Communication Ports
RP-C Controllers
BACnet/IP Controller Network Topologies
Communication Port Wiring
RP-C Sensor Bus
RP-C Room Bus
RP-C Modbus
Wireless Adapter - Advanced
KNX Modbus Gateway RP-C-EXT-KNX
RJ45 Pinout for the RS-485 Port(s) of the RP-C Controllers