Contemporary Control Systems BASrouter Portable Installation Guide (Firmware 2.6.x) - Manual (Page 14)

TD070210-0IG
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NOTE: Although they may share the same Ethernet physical network,
BACnet Ethernet devices and BACnet/IP devices must have their own
unique network number and these two networks cannot communicate
unless their messages pass through a router. These network numbers
must be in the range of 1–65534 (0 and 65535 are reserved). If the
BACnet Ethernet network value is left at its default value of 0, the
BACnet Ethernet function within the BASRTP-B will be disabled. To
prevent message loops, a subnet must have only one router enabled for
BACnet Ethernet.
BACnet/IP Parameters
BACnet/IP UDP Port (Default Value = 0xBAC0)
This 16-bit hex value (BAC0–BACF) is set to BAC0 by default.
Usually, this default value should not be changed. In a typical
installation, each BASRTP-B will be assigned the same UDP port.
BACnet/IP Network (Default Value = 1)
The BACnet/IP network number is a 16-bit value (1–65534). Each
network within the BACnet internetwork must have a unique number.
This includes the BACnet/IP and MS/TP sides of the BASRTP-B. Do
not use addresses 0 or 65535 since these addresses are reserved.
IP Address (Default Value = 192.168.92.68)
The IP address of the router can be 0.0.0.1–255.255.255.254. A private
address is usually assigned to the BASRTP-B.
IP Subnet (Default Value = 24)
This value (0–30 in the “slash” notation) is the number of bits with a “1”
in the mask. The default value of 24 corresponds to 255.255.255.0 in the
dotted decimal format. All devices on the same subnet which
communicate via BACnet/IP should use the same subnet mask.
IP Gateway (Default Value = 192.168.92.1)
The default gateway for the IP stack is a dotted decimal number in the
range of 0.0.0.0–255.255.255.254. This will be the IP address of your
local IP router — if one exists.