Vision PLCs can be connected to a BACnet network with the help of the GW-BAC1 getaway.
The GW-BAC1 is an external, high performance Building Automation multi-protocol gateway that has been preprogrammed for enabling Unitronics products to various building automation protocols. These protocols include BACnet MS/TP and BACnet/IP. Configuration for the various protocols is done via Unitronics configuration tool UniBACnet Configurator.
To configure it you have the UniBACnet configurator. this configurator is a tool provided Unitronics that allows the user to create the configuration file for the GW-BAC1 easily. Once created, the configuration file should be downloaded to the GW-BAC1 in order to enable it to communicate with the Unitronics PLC. The UniBACnet configurator can be launched from both the VisiLogic and UniLogic programing applications Tools menu. This tool will configure the BACnet getaway as BACnet master and modbus Slave. If you wish to have the getaway act as BACnet slave and modbus master the configuration file should be change manualy before downloading it to the device.
The RS485 connection is a strait forward RS485 connection between the PLC and the getaway.
You may also connect the PLC via Ethernet port.
The Getaway supports modmus RTU and modbus Ethernet and Bacnet MS/TP and Bacnet IP.
You may have any combination of them.