P/N PM000223A • Rev. 1 • ISS 9 August 2017
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Installation Manual
NU-Series Hardware
Introduction
Note: You cannot use DIP switches and serial number-based addressing to set
hallway and room bus addresses in the same system. Use one method, only.
When a Gateway II first powers up (initializes), it starts the device identification process.
Connected devices shall be requested to respond. On subsequent power-ups, the
Gateway II starts the device identification process to determine which connected devices
were previously connected and which are new. The Gateway II begins by identifying the
dome lights and NUPBCs based on stored data. Once the Gateway II identifies the known
devices, it then requests identification from the new devices on the hallway bus. The
Gateway II then requests identification and other information about any room modules
connected to the room buses. When all devices connected to the buses have been
identified, they can be configured and set to Normal Operation mode. Their current state
is then stored.
1.4.2 Addressing Hallway Bus Devices
The NUPBC, NUDL2S and NUDL4S contain DIP switches used to set its hallway bus
address. You can also use the Software Configuration Tool for serial number-based
addressing. However, you cannot use a combination of DIP switches and serial bus
addressing. Choose one method, only. The address range is 0-39.
1.4.3 Active Room Bus
The NU-series domes lights (NUDL4S and NUDL2) reside on the hallway bus and control
the active room buses. The NUDL4S is a four-segment, multi-colored light on the hallway
bus. The NUDL2S is a two-segment variation. The figure below shows a system setup with
an NUDL dome light.
