An object derived from an analog value that was obtained as the result of
a control process, operator entry, or attribute from another object.
Analog Data (AD)
object
An NT command option that allows you to change the value of an object.
ADJUST
The procedure required to produce the exact setting, response, or effect
desired.
adjustment
The software representation of a hardware device that is monitoring an
analog value.
Analog Input (AI)
object
A signal, either audible or visual or both, that alerts an operator to an off
-
normal condition that requires corrective action; an off
-
normal condition
(e.g., pressure or temperature) that has deviated from an established
operating range.
alarm
An NT screen option that displays system IDs that have one or more
objects in alarm.
ALARM
Optional high and low limits set by the user. If the analog value goes
above the high limit, or below the low limit, an alarm is generated and a
COS report is sent to one or more operator devices.
alarm limit
The high or low value of an analog input object which, if exceeded, will
cause an alarm and/or control action.
analog limit
The software representation of a control output used in positioning
valves, dampers, and other proportional devices.
Analog Output
Digital (AOD) object
The software representation on an analog output device used in position
control, or remote setpoint adjustment.
Analog Output
Setpoint (AOS)
object
A family of control devices with hardware and software preconfigured to
meet the functional needs of a specific application. These devices can
Application
Specific Controller
(ASC)
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