Manual

LogicPro User’s Guide Glossary
Doc.# 28002-00 Rev 3.00 Watlow Anafaze 275
Language
A system for communicating instructions to a comput-
er using a defined syntax. There are several major
types of languages used by computers: machine, pro-
gramming and fourth-generation are examples of a
few of these language types.
Library
A collection of frequently used modules, precompiled
routines in object code form.
LIFO
Last In First Out.
Link
A connection that exists between modules and routines
as a result of the actions of a “linker.” The result of this
process is the creation of an executable file from these
otherwise unconnected modules.
Logic
See Boolean Algebra.
LogicPro
IEC 1131 compliant Microsoft Windows-based,
graphical programming environment allowing devel-
opers to create, debug, and manage Real-Time process
control Programs written in traditional programmable
controller languages.
Loop Back
Transition which passes process control from one step
back to a preceding step.
M
MAX
SCAN Maximum Value Variable.
Menu Bar
Located near the top of the screen and displays the
names of the pull down menus which can be accessed.
Message Box
A small box that appears on the screen to advise you of
a problem or potentially dangerous operation.
MIN
SCAN Minimum Value Variable.
Modem
An acronym for Modulator - Demodulator. A device
that allows you to interface your computer with a non-
ISDN telephone line. Since conventional phone lines
transmit analog data the MODEM must translate the
computers digital data stream into analog data for
transmission. When data returns to your computer
from the phone line the MODEM translates the analog
signal back into a digital signal.
Monitoring
A feature in LogicPro that allows you to observe the
status of a Program while it executes.
MOVE
A function block that moves data from one location to
another.
Multiple Output Coil Branches
See Branch.
N
Normal Coil
See Coil, Normal.
NT
See Windows NT.