Setup Help

Use the setup page to perform basic settings for Device Parameters, BACnet Ethernet, BACnet/IP and MS/TP.

Device Parameters

Device Name (Default Value = BASRTLX-B-xxxxxx): This is used to configure a unique device object name for the device on the network. It can be up to 80 characters and defaults to a unique name of the form BASRTLX-B-XXXXXX - where the Xs are replaced with the final six characters of the router's Ethernet MAC address.

Device Instance (Default Value = 0): The router's device instance is a 22-bit value (0-4,194,302). Do not use 4,194,303 which is reserved by BACnet. Each BACnet device within the same BACnet internetwork must have a unique device instance. One must be assigned to the BASRTLX-B.

Device Description and Device Location can be used to configure additional identifiable information for the router. They are blank by default


BACnet Ethernet (0 disables BACnet Ethernet)

Ethernet Network (Default Value = 0): Most BACnet communication that is carried by Ethernet uses the BACnet/IP protocol. However, there are still instances in which the older BACnet Ethernet protocol (ISO 8802-3) is found. The BASRTLX-B allows these two protocols to communicate. BACnet Ethernet uses Ethernet MAC addresses for station addressing - unlike BACnet/IP which addresses messages by means of Internet Protocol (IP) addresses. Each Ethernet MAC address (often called the physical address) is unique to the Ethernet network adapter. It is permanently embedded into the adapter during manufacture and cannot be changed. It is composed of six two-digit hexadecimal numbers (00-FF). An example of an Ethernet MAC address is: 00-08-A1-10-BD-EB

Each Ethernet network adapter has the ability to store an IP address that is changeable. This IP address is typically represented as four decimal values (each is 0-255) separated by dots. Often called the dotted quad format, an example is: 192.168.92.1

NOTE: Although they may share the same Ethernet physical network, BACnet Ethernet devices as well as 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 BASRTLX-B will be disabled. Also, to prevent erratic traffic due to message loops, an IP 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 (normally in the range BAC0 - BACF) is set to BAC0 by default. Usually, this default value should not be changed. In typical networks, each BACnet/IP device will have the same UDP port

BACnet/IP Network (Default Value = 1): Like all networks in the BACnet internetwork, the BACnet/IP network must have a unique number (0 - 65534). Do not use address 65535 since this address is reserved.

Note: To disable BACnet/IP functionality on the router, set values for BACnet/IP UDP Port 1 and BACnet/IP Network 1 on the Setup page along with the Secondary BACnet/IP UDP Port and Secondary BACnet/IP Network on the NAT page under the Advanced tab to 0 .

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 BASRTLX-B.

IP Subnet (Default Value = 255.255.255.0): 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 BASrouterLX 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. This value must be properly set if the BASrouterLX needs to communicate outside the subnet.


MS/TP Parameters

MS/TP MAC (Default Value = 00): This is the unique 8-bit (0 - 127) MAC address of the router's MS/TP port, in decimal. Lower MAC address numbers are preferred with the default recommended. It is further recommended that all other BACnet devices attached to the same MS/TP network be assigned consecutive MAC addresses beginning with 1 without allowing any gaps in addressing. Slave devices may have MAC addresses of 128 - 254, but MAC address 255 is reserved.

MS/TP Network (Default Value = 2001): This 16-bit decimal network number (1 - 65534) must be unique for all BACnet networks within the BACnet internetwork. No other networks, regardless of type, can have the same network number. Do not use addresses 0 or 65535 since these are reserved.

Max Masters (Default Value = 127): Only master nodes participate in the MS/TP token-passing process. The highest master MAC address (in decimal) in the MS/TP network is 127 and you should use 127 if you are unsure of other MS/TP device addresses. Each MS/TP device should use this same value. For a value in this field to be proper, it must equal or exceed the highest MAC address for any master on the network. Optimum performance occurs when this value:
         1.equals the highest MAC address of any master, and
         2.all masters use sequential MAC addresses starting with 1
Since many BACnet devices do not allow this parameter to be changed, leave the BASRTLX-B at the default value.

Max Info Frames (Default Value = 100): This is the maximum number of messages that can be routed onto the MS/TP network by the router per token pass. Its range is 1 - 100, and typical values are 20 - 40. Smaller values provide less access to the MS/TP network from the BACnet/IP network because they give native MS/TP messages higher priority than those passed by the router from BACnet/IP. The default value usually provides good performance.

MS/TP Baud Rate (Default Value = 38400): The baud rate of the MS/TP network can be 9600, 19200, 38400, 57600, 76800 or 115200 bps. All MS/TP devices on the same MS/TP network must use the same baud rate. On power up, as the router polls for other masters, autobauding devices adjust to its baud rate.

MS/TP Tolerance (Default Selection = Lenient): This setting determines the degree to which interoperability with devices is successful. The Lenient option is less efficient for traffic flow but optimises interoperability. A slight improvement in performance will be realised by selecting the Strict setting.