Siemens BACnet ATEC 125-5050 - Manual (Page 25)

Chapter 3 – Point Database
25
Siemens Industry, Inc. BACnet ATEC Owner's Manaul
125-5050, Rev. AA 4/20/2010
Descriptor Address 1 Application Description
controller's Ul 1 input. The controller uses this value to
determine whether it is in heating or cooling mode.
FLOW START 16 All except
2560, 2561, 2597
Determines how the damper modulation will be sequenced
while in heating mode. When HTG LOOPOUT is above this
value, then FLOW STPT starts to increase.
FLOW END 17 All except
2560, 2561, 2597
Determines how the damper modulation will be sequenced
while in heating mode. When HTG LOOPOUT is below this
value, then FLOW STPT starts to decrease.
WALL SWITCH 18 All YES indicates that the controller is to monitor the status of a
wall switch that is connected to UI 2. NO indicates that the
controller will not monitor the status of a wall switch, even if
one is connected. Valid input: YES or NO.
DI OVRD SW {19} 2 All Actual indication of the status of the override switch (not
physically available on all temperature sensor models) at the
room temperature sensor. ON indicates that the switch is
being pressed. OFF indicates that the switch is released.
Valid input: ON or OFF.
OVRD TIME 20 All except
2597
The amount of time in hours that the controller will operate in
day/occupied mode when the override switch is pressed while
the controller is in night/unoccupied mode.
NGT OVRD {21} 2 All except
2597
Indicates the mode that the controller is operating in with
respect to the override switch. NIGHT indicates that the switch
has not been pressed and the override timer is not active.
DAY indicates that the switch has been pressed and the
override timer is active. The controller then uses a day mode
temperature setpoint. This point is only in effect when
DAY.NGT indicates night mode.
REHEAT START 22 All except
2560, 2561, 2597
Determines how the reheat modulation will be sequenced
while in heating mode. When HTG LOOPOUT is above this
value, then the reheat modulates upward.
REHEAT END 23 All except 2560, 2561,
2597
Determines how the reheat modulation will be sequenced
while in heating mode. When HTG LOOPOUT is below this
value, then the reheat modulates downward.
DIGITAL UI 2 {24} All Actual status of a contact connected to the controller at UI 2.
ON indicates that the contact is closed; OFF indicates that the
contact is open. If a wall switch is used, it is connected to UI
2. See WALL SWITCH.
DIGITAL UI 1 {25} 2 All except
2561
Actual status of a contact connected to the controller UI 1. ON
indicates that the contact is closed; OFF indicates that the
contact is open. When a contact is connected as a digital
input, the analog input is not available. See AUX TEMP.
SERIES ON 26 2564, 2565 When flow rises above this value, the series fan will turn ON.
SERIES OFF 27 2564, 2565 When flow drops below this value and other conditions have
been met, the series fan will turn OFF.
PARALLEL ON 28 2566, 2567 When flow drops below this value and other conditions have
been met, the parallel fan will turn ON.
DAY.NGT {29} All Indicates the mode in which the controller is operating. Day
temperature setpoints will be used in day mode. Night
temperature setpoints will be used in night mode. This point is
normally set by the field panel.
PARALLEL OFF 30 2566,
2567
When flow rises above this value, the parallel fan will turn
OFF.
CLG FLOW MIN 31 All except 2597 The minimum amount of air in CFM (LPS) to be supplied to