Glossary

ETAT Glossary

There are currently 21 names in this directory beginning with the letter E.
Edge Computing
A method of optimizing cloud computing systems by performing data processing at the edge of the network, near the source of the data. Edge computing pushes applications, data and computing power (services) away from centralized points to the logical extremes of a network.

Edge of IoT
The edge of the IoT is where the action is. It includes a wide array of sensors, actuators, and devices—those system end-points that interact with and communicate real-time data from smart products and services.

Editor
The Node-RED admin UI. Where you edit and deploy flows.

EM Area
A general-purpose memory area that can be read and written in word (16-bit) units. The EM Area will hold the previous data when the operating mode is changed.

Embedded Computing / Systems
A term for computing that is dedicated to a single purpose, as opposed to generalpurpose computing. Embedded computer systems are special purpose and contain only the software and hardware needed to achieve those ends. In IoT, many systems are developed for specific purposes and made to work in concert with other systems.

Embedded Web Server
These are micro webservers designed for embedded systems. They are commonly found in industrial system devices, but also in many other embedded system devices. Disambiguating those designed for industrial systems from others is sometimes necessary.

empty string
A character string containing no characters, often thought of as the “zero” of text.

End-effector
An accessory device or tool, specifically designed for attachment to the robot wrist or tool mounting plate to enable the robot to perform its intended task. (Examples may include: gripper, spot weld gun, arc weld gun, spray point gun or any other application tools.) (R15.06)

Energy Management System
(EMS) Essentially a SCADA server tailored for the energy industry. In some cases this will refer to a large electrical network, and in other products this refers to the energy used within a building. From a technical point of view they are similar, but the criticality of the former is likely to be national and the criticality of the latter much reduced to that of a few businesses.

Enterprise Resource Planning
(ERP) An industry term for the broad set of activities supported by multi-module application software that help a manufacturer or other business manage the important parts of its business, including product planning, parts purchasing, maintaining inventories, interacting with suppliers, providing customer service, and tracking orders. ERP can also include application modules for the finance and human resources aspects of a business. Typically, an ERP system uses or is integrated with a relational database system.

equals operator
the equals sign is used to assign a value to a variable in coding, for example n=2 assigns the value 2 to the variable n.

Errors and Exceptions
An error having to do with the ‘grammar’ or syntax of the program is called a SyntaxError. If the issue has to do with how the code is indented, then it will be called an IndentationError.

Ethernet
Networking standard developed by Bob Metcalf at Xerox and standardized by the IEEE in the IEEE 802.3 standard

Ethernet/IP
Ethernet standard designed for industrial applications

ETL
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execute
another word meaning run. To execute some code is to run it.

execution time
The time required to execute an instruction.

expression
A piece of syntax which can be evaluated to some value.

external interrupt task
A task that is executed when an interrupt request is received from a Special I/O Unit, CPU Bus Unit, or Inner Board.

Extra nodes can be installed into the palette using either the command-line or the Palette Manager."
ETAT

Extract, transform, and load (ETL)
A process used in data warehousing to prepare data for use in reporting or analytics.


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