Specifications

C E N T A U R U S P R I M E
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Commissioning the
Gateway with the Local
User Interface
Creating and Downloading the GATEWAY.INI file
The following is an example of the GATEWAY.INI file that must be edited to match
your particular installation. There are several sets of parameters in the INI file. One set
of parameters deals with the BAUD rates on the four Trane trunks. Another
parameter sets the Ethernet IP Address of the gateway (it must be a FIXED IP
address!), if you are using either Modbus/TCP or BACnet/IP as the host protocol.
And, if you are using BACnet, another set of parameters tells the gateway about several
network options of BACnet.
The “BAUD0, 9600,N” line may be modified for different Baud rates and parity for
your Modbus/RTU connection. The valid baud rates you can use are only:
4800, 9600, 19200
The parity specification should only be “N, “O”, or “E”. This will set the Parity to
None, Odd, or Even, if you are using the Modbus RTU protocol. If you are using
Modbus/IP or BACnet/IP, then the “BAUD0” line is irrelevant.
The lines for BAUD1, BAUD2, BAUD3, and BAUD4 must be set for the respective
Device baud rates which will be “1200” or “9600” (depending up whether you have
older VAV or newer ones, respectively). If you have unused trunks, then the baud rate
should be set to “0” as seen in the example below for BAUD3 and BAUD4. See
“Uploading and Downloading files to the Gateway” for information on accomplishing
the upload/download procedures.
The line for IP_ADDR is required only if you have the Ethernet in use (i.e.,
Modbus/TCP or BACnet/IP protocols in operation. You have to set up the FIXED
IP Address of this gateway computer in two places: here in the GATEWAY.INI file,
and also in the SOCKET.CFG file (more on that later). But just be aware that they
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