The Babel Buster 485XL makes the assumption that it is in charge of the LonWorks devices you connect. In other words, do not connect the 485XL to a managed network. This is a device gateway, not a network bridge.

For purposes of putting LonWorks devices on a BACnet network, the device management provided in this area of the screen is the only LonWorks network management tool you will normally need. Network variables are not bound, they are polled or explicitly updated. Domain table entries are changed, however, to effectively "install" the LonWorks device on the gateway's network.

Node: Enter the LonWorks device number or use the up/down buttons to select LonWorks device 1 through 20. This is simply a pointer to an entry in the device table.

Program ID: If you click Read, this will show the program ID associated with this device table entry. If you edit or enter a program ID and click Write, this becomes the program ID the gateway will look for when you proceed with the Install request. Entering zero will accept the first LonWorks device to respond on the network.

Note: Program ID of zero will be a wild card if installing a node using the "Install" Service Request. If using the "Start Discovery" Service Request, a program ID of zero will be disregarded. The wild card for Discovery is a program ID with FF in the first byte. DO NOT use this wild card if a network interface such as i.LON 100 is on the LonWorks network. The domain table of the first undiscovered node is changed by the discovery process.

Neuron ID: Click Read to see what Neuron ID was discovered by the Install or Start Discovery process. Enter a Neuron ID and click Write to explicitly map a known Neuron ID.

Read/Write: The buttons next to Neuron ID read or write the program ID and Neuron ID entries in the gateway's device table. The table entry is indexed by node number in the Node window.

Service Request: Several device related operations are initiated by the options available here. Refer to the service list below.

Domain Update Failed: This check box is set if the result of Set Node Domain or Check Domain was unsuccessful. This means the gateway cannot communicate with this node.

Request: Click this button to initiate whatever service request is indicated in the Service Request drop list.

Domain Len: This displays or sets the domain length used by the gateway. This same domain setting is applied to any nodes "installed" on the gateway's LonWorks network.

Domain ID: This is the gateway's domain ID, and will become the domain ID for any nodes installed on the gateway's LonWorks network.

Subnet: This is the gateway's subnet number, and will become the subnet for any nodes installed on the gateway's LonWorks network. The gateway itself is node number 1. Devices in the gateway's device table are set to sequential node numbers from 2 and up (device number plus one).

Read/Write: The buttons below Domain ID read/write the gateway's domain table entry. Only the gateway is updated by this Write button. If you need to change the domain or subnet of all attached nodes after they have already been installed, you need to re-install them (or use the Set Domain service request).

Service requests initiated by selecting service from drop list and clicking Request:

Service Request	Action
Initiate Install	Tells the gateway to wait for a service pin message from some node on the LonWorks network. The node number showing in the Node window is the device that will accept the service pin message. If a non-zero program ID is written prior to initiating the install, the gateway will ignore all service pin messages not coming from a device matching that program ID. You should press the service button on the device you wish to install after initiating the install with this service request. After pressing the button, click the Read button next to Neuron ID to see if you received anything.
Cancel Install	Cancels the above request. The install request will remain pending indefinitely if no message is received and you do not cancel the install request.
Wink Node	Sends a wink command to the node selected in the Node number window. The result of a wink is device dependent. Refer to documentation for the device in question.
Set Node Domain	Sets the domain table entry for the node selected in the Node number window. The domain length, ID, and subnet will be copied from the gateway's domain table as indicated on the right. The node number will be Node plus one.
Check Domain	Sends a query to the Node, and sets or clears the Query Domain Fail check box accordingly. This is a diagnostic to see if you have a connection to the device.
Start Discovery	Initiaites a sequence of events beginning with broadcasting a message to all LonWorks devices that they should report their existence. If their program ID matches an entry in the device table which does not already have a Neuron ID associated with it, this device will be installed in the first available slot in the device table having the matching program ID. If multiple unassigned program IDs are present, and multiple matching nodes respond, multiple devices will be installed simultaneously. Duplication of Neuron IDs is checked and no device will be installed twice. All installed nodes will have their domain tables updated to effectively install them on the gateway's LonWorks network. Note: A program ID with FF in the first byte will be treated as a wild card. Use the wild card with caution! You have no control over what responds first.