User's Manual

Glossary

Lookout Operator’s Manual G-2 www.natinst.com

data member Data source or sink associated with a Lookout object. A readable data

member, or source, may be used in expressions or as inputs to other

objects. A writable data member, or sink, may have at most one

connection into it, created using the Object»Edit Connections dialog

box. A data member may be both readable and writable.

database Collection of data stored for later retrieval, display, or analysis.

dialing prefix Part of the Hayes AT command set for use with modems.

displayable objects A Lookout object class that has a displayable component, such as a Pot,

a Switch, or a Pushbutton.

edit mode Lookout mode in which you can alter and create objects within a process.

Switch in and out of edit mode by pressing <Ctrl-space> or by selecting

Edit»Edit Mode.

Ethernet A widely used, standardized local area networking technology, specified in

the IEEE 802.3 standard.

event Anything that happens can be an event. In Lookout, events include such

things as adjusting a control value, entering or exiting edit mode, opening

or closing a control panel, and logging in or logging out of the system.

expressions Lookout expressions are often paths to a data member. They can also

function like variables that, using a spreadsheet cell type formula, become

capable of performing flexible, real-time math operations, condition

testing, and other complex operations functions.