User manual

Glossary
34
Siemens Industry, Inc.
BACnet ATEC Owner's Manaul
125-5050, Rev. AA
4/20/2010
slave mode
Default application that displays when power is first applied to an equipment controller.
No control action is initiated in the slave mode.
stand-alone control
Type of control offered by a controller that is providing independent DDC control to a
space.
Terminal Equipment Controller
Siemens Industry, Inc. product family of equipment controllers (one is the BACnet VAV
Controller - Electronic Output) that house the applications software used to control
terminal units, such as heat pumps, VAV terminal boxes, fan coil units, unit ventilators,
etc.
UI
Universal Input. Can be used as an AI or DI. An AI input is a point receiving a signal
that represents a condition that has more than two states. A DI input is a physical input
point that receives a two-state signal.
unbundle
Term used to describe the entering of a point that resides in a controller's database
into the field panel's database so that it can be monitored and controlled from the field
panel.
VAV
Variable air volume. Ventilation system that changes the amount of air supplied to and
exhausted from the rooms served.