The LED indicators showing LonWorks activity are on the front of the gateway. Additional diagnostic LEDs are inside the unit and may be viewed through the vent slots on the lower side.

BACnet MS/TP These may be viewed through the vent holes in the cover.	Status	Green LED, flashes on each time the token is received and passed. Constant flickering that is nearly constant on is a sign of good network health. Long pauses of darkness indicates the network is not functioning smoothly.
	Error	Normal operation: Red LED flashes any time a request from an external device made an invalid request. Bootloader: Upon power-up, the bootloader checks the integrity of the application. If program memory has been corrupted in the co-processor, the red light will remain on with brief flickers off at a 1-second rate, and the green Status will remain off. During the startup period of about 5 seconds, the red LED will remain on while self-test is in progress.
	Activity	Yellow LED flashes each time a packet is successfully received (addressed to this device), and a response transmitted, on the MS/TP network. This LED will not flash if unrecognized communication is received.
	Power, 5V	Green LED indicates power is present independent of any processor activity. This indicator is on the secondary side of the internal DC/DC converter. If power is present at the input terminals but this LED does not light, there is a hardware fault.
	Power, 3V	Green LED indicates 3V power is present independent of any processor activity. This supply is not used in the MS/TP version of gateway.
LonWorks These may be viewed from the front of the gateway.	SVC	Green LED, operates according to the rules for Service LED on any standard LonWorks device. Will normally flash once at power-up and remain off except when service button is held down.
	WNK	Bi-color Green/Yellow LED (a) Alternates rapidly between yellow and green for about 10 seconds in response to receiving a wink command, and at power-up. (b) Flashes green each time a LonWorks message is received. (c) Flashes yellow each time a LonWorks message fails. (d) Remains yellow if no LonWorks nodes are installed
	Service Button	Pressed to send a service pin message from the gateway for diagnostic purposes. Held down for approximately 30 seconds to cause a BACnet re-init reset.

Service Button and INIT Mode

Changes to device identity are made via software rather than attempting to set 40 DIP switches. However, this implies that you must somehow be able to get the attention of the device to make those settings that include baud rate and device ID. A special mode referred to as INIT mode is invoked by holding the Service button down for about 30 seconds any time following initial power-up. Hold the button down until reset is indicated by the red LED on inside case. The baud rate will be 9600 baud, device ID=1, and station ID=1 in INIT mode. Changes can be made to configuration outside of INIT mode if you know what the device ID and baud rate have been previously set to. As shipped from the factory, these settings are baud rate=9600, device ID=2, and station ID=1. (Only device ID changes in INIT mode versus as shipped.)

WIRING

Connect the LonWorks network connections to the LON terminals on the front of the gateway. Connect earth ground to the LON connector where indicated (GND) to provide ESD protection.

Connect the MS/TP network to the terminal block at the bottom, observing NET+ and NET- polarity. Connect power to the “power” terminal, and power common/ground to the “ground” terminal.

Power may be 10-30VDC, or 12-24VAC. This gateway uses a half wave rectifier which means it is not required to have a dedicated isolation transformer (ungrounded AC) as with other gateways in the Control Solutions gateway family that use a full wave bridge rectifier. There is no separate AC common on the Babel Buster 485XL. One side of AC will be grounded. (Do not mix with full wave bridge devices requiring isolated AC.)