Bacos KNX RS485

Description:

The BACnet slave Vivo BACOS KNX IP / BACOS KNX RS485 gateway is a KNX modular unit for panel mounting. It allows you to exchange informations with a master device over a RS485 differential serial or Ethernet network through BACnet protocol. The Vivo gateway acts as BACnet slave. The informations exchanged over the BACnet network are updated over the KNX network by means of a twisted pair (TP) communication cable. The device manages a two-way data stream: the BACnet registers can be cyclically read and their value sent as a communication object over the KNX TP network through a multicast communication to configured group addresses. The data update over the KNX network can be done cyclically and/or on event of change of the data acquired by the BACnet network. Likewise, the Vivo gateway can make requests to cyclically readings KNX communication objects or acquire their values during data exchange over the bus. Cyclically or on event of change of the communication objects, data are written on the Modbus registers of one or more configured devices. The Vivo gateway supports the entire Modbus RTU master protocol with the possibility of reading and writing single and multiple 1-bit registers (Coil and Status) as well as 16-bit registers (Holding and Input). It is also possible to read and write multiple registers containing 32-bit foating point values (IEEE 754 format). As for KNX communication, 1-bit, 1-byte, 2-byte and 4- byte communication objects can be acquired: internal conversion functions allow you to convert the informations from and to 16-bit foating point values (DPT 9.xxx) starting from integer BACnet registers.

Characteristics:

BACnet side:

· RS485 serial communication port, electrically isolated from power supply, 120 O termination resistance insertable by a 1-way microswitch

· BACnet slave communication

· Selectable baud rate from 1200 to 115200 baud

· BACnet registers data exchange

· 1440-byte volatile support "BACnet image" memory buffer

KNX side:

· KNX TP (Twisted Pair) communication port set to 9600 baud, electrically isolated from power supply

· 1440-byte volatile support "KNX image" memory buffer

Port Ethernet:

· Ethernet communication port (IEEE 802.3), RJ45 connector, minimum cable category: 5E

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