The RP-V-5C-M model provides the following communication ports:
One RS-485 port with RJ45 interface
One RS-485 port with terminal block
The RS-485 port is labeled:
RS-485 Com A
The RS-485 Com A port is rated 3 W (24 VDC).
The RS-485 Com A port is an RJ45 port. For more information, see RJ45 Pinout for the RS-485 Port(s) of the RP-V Controllers .
The RS-485 Com A port can be configured to use one of the following two communication protocols for different types of networks:
Sensor bus
Modbus
An RP-V can have only one of each network type.
The sensor bus is designed for communication with SpaceLogic Sensor devices. For more information, see RP-V Sensor Bus .
The Modbus (RTU) network can be used for communication with standard Modbus devices. For more information, see RP-V Modbus .
Default configuration:
Sensor bus on the RS-485 Com A port
For more information, see Communication Port Wiring .
For more information, see Allocating Flexible Ports .
The RS-485 port with screw terminal block is used for connection to the BACnet MS/TP (RS-485) network.
The screw terminals are labeled:
RS-485+
RS-485–
Shield
For more information, see RP-V-5C-M Screw Terminals .
For more information, see RS-485 Communications .