Watlow LogicPro - Manual (Page 290)

Glossary LogicPro User’s Guide
274 Watlow Anafaze Doc.# 28002-00 Rev 3.00
and Mac-OS are two popular examples of a Graphic
User Interface (GUI).
Graphical Language
A programming language that makes extensive use of
graphic symbols for easier programming. This allows
you to draw a Program, instead of coding one.
Log-
icPro supports Ladder, SFC and FBD Graphical Lan-
guage.
Graphical Object
Symbols used to represent functions in a Graphical
Language. In
LogicPro examples of Graphical Objects
include contacts, coils, blocks etc.
I
I/O
Input output this refers to any process that exchanges
data through a computer, either writing data to it, re-
trieving data from it or both. Typically this term is
used to identify software and hardware that are non-
computational in nature. For example, a printer or a
hard drive are I/O devices since they are non-compu-
tational but a CPU is not since it computational.
I/O Address
A unique identifier for I/O devices. Computer Pro-
gram used by
LogicPro to transfer information to and
from a hardware controller Resource or other periph-
eral device.
I/O Driver
Computer Program used by LogicPro to transfer infor-
mation to and from a hardware controller Resource or
other peripheral device.
Icon
A visual symbol in the Windows environment.
IEC 1131
International Electrotechnical Commission standard
designed to enhance interpretability by providing a
common programming language across a variety of
controllers and platforms.
IEC
The International Electrotechnical Commission.
Import Variables
Retrieving saved Variables from a reusable text file for
LogicPro Programs, Projects or Resources.
Input
The action of reading values into a Program, process or
hardware device.
Input Variable
Variables used for writing values into a Program, pro-
cess or hardware device.
INT
See Integer.
Interface
The junction of two separate processes or devices. For
example, to print a letter you must interface with an
operating system to launch a word processor. Next you
need to interface with the word processor, via your
keyboard, to enter your letter. Next, the word proces-
sor needs to interface with the computer. Finally, your
computer needs to interface with a printer to create the
letter.
Interrupt
A signal sent to a Program to inform it that an event
has occurred. Both hardware and software are capable
of generating interrupts.
Integer
A positive or negative number with no fractional parts
or zero.
L
Ladder Diagrams
An IEC 1131-3 standardized set of symbols and func-
tions used to graphically design logic using relays.
This diagram consists of left and right power rails con-
nected by “rungs” on which relays and coils reside.