Active Directory is a Windows OS directory service that facilitates working with interconnected, complex, and different network resources in a unified manner. In Ignition, this can be used as an authentication source that is managed by IT and provides a universal login for your operator's computers and Ignition clients.


Ad hoc refers to any activity that is not planned in advance, but is done or formed only because a particular situation has made it necessary.


Meaning not restricted to just one. Most commonly, you will hear that Ignition is database agnostic or Operating System agnostic. This means it can connect to many types of databases and be installed on more than one Operating System.


An event or setting on a Tag that alerts users when something is wrong. These can happen based on numeric values, machine states, bad connections, and more.


The Alarm Journal stores historical data about alarms that occurred, such as their source, timestamp, associated data on the alarm, and the values of the alarm properties at the time the alarm occurred.


Alarm notification routing that controls how alarms are sent out (Email, SMS, Voice), who receives the alarm notification (On-Call Rosters, or individual users), and when the alarm notification is sent out (immediately, or delayed).


The current (realtime) state of alarms in the system. Typically the Alarm Status Table component is used to view the Alarm Status, but can also be accessed by via scripting.


The name of a long list of popular PLCs owned by Rockwell.


An Application Programming Interface (API) facilitates interaction between software. In the context of Java, the API is a collection of prewritten packages, classes, and interfaces with their respective methods, fields, and constructors. The API defines the correct way for a developer to write a program that requests services from another application. Websites and online services often have a public API so other programs can access data remotely.


The proportional relationship of the width to the height of an image or screen. Aspect ratio is commonly expressed as two numbers separated by a colon, for example 4:3 or 16:9.


Automation or automatic control is the use of various control systems to operate equipment such as machinery, telephone network switching, ship steering and stabilization, aircraft monitoring or other application with minimal or reduced human intervention.


Automation Direct is a PLC supplier that rebrands PLCs manufactured by Koyo. These are mostly inexpensive but reliable PLCs sold directly to end-users and integrators with no middle man.
These PLCs are relatively limited in terms of functionality but they have captured sizable market share based on price alone.





See API.


An ARM (Advanced RISC Machine) usually refers to a very small and usually inexpensive device that is created for a specific task. The key element of an ARM Reduced Instruction Set Computing (RISC) processor that the reduced instruction set means that the processor can run on using fewer transistors and hence reduce current consumption. Installing Ignition on an ARM requires a separate installer file. See ARM Install.

See ARM.