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PART 1: CX-Programmer
OMRON
GLOSSARY OF TERMS
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CX-Programmer
CX-Programmer _Page 143
Memory Card component
The CX-Server application, as utilized by CX-Programmer, manages the file storage
to and from PLC memory cards.
Microsoft Excel
A spreadsheet application.
Microsoft Windows Explorer
A file handling application part of the Microsoft Windows suite.
Microsoft Windows
A windowing environment that is noted for its GUI, and for features such as multiple
typefaces, desk accessories (such as a clock, calculator, calendar and notepad), and
the capability of moving text and graphics from one application to another via a
clipboard.
CX-Programmer runs only under Microsoft Windows. DDE functions communicating
with other applications supported by CX-Programmer use Microsoft Windows as a
basis.
Monitor mode
A PLC operational mode that allows the device, during normal execution, to review
the condition of the Data Link (including the PLCs/nodes on that link).
Network
1. Part of the PLC configuration, based on the device type. The number of Networks
available is dependant on the device type.
2. A number of computers linked together with a central processing point known as a
server that is accessible to all computers. Networks affect CX-Programmer in that
further Network associated options are available if the computer is Network
connected.
Offline
The status of a device when it is not being controlled by a computer (although it may
be physically connected to it).
OLE
Object Linking and Embedding. Used to transfer and share information between
Microsoft Windows based applications and accessories.
Online
The status of a device when it is under the direct control of a computer.
Output
The signal sent from a PLC to an external device.
Output instruction
A type of PLC instruction that appears at the right of a ladder rung – it cannot be
connected to at the right.
Output window
An area of the CX-Programmer display reserved for compilation messages and search
results.
PLC Error component
The CX-Server application, as utilized by CX-Programmer, displays and manages
PLC errors.
PLC Memory component
The CX-Server application, as utilized by CX-Programmer, allows the user to view,
edit and monitor either channels (words) or individual bits in areas of the PLC.
PLC Setup component
The CX-Server application, as utilized by CX-Programmer, permits the configuration
of PLC settings.
PLC
Programmable Logic Controller.
Point
A point is used to hold a value of a predefined type - Boolean, Integer, Text, etc. The
contents of a point may be controlled by an object or IO mechanism such as DDE.
The contents of a point may control the action or appearance of an object, or be used
for output via an IO mechanism.
Program
A set of instructions that are performed by a computer or PLC.
Program memory
An area of PLC memory reserved for the storage of programs.
Program mode
PLC mode of operation during which the device can be programmed.
Project
Projects consist of ladder program(s), address and network details, memory, IO,
expansion instructions (if applicable) and symbols. Each CX-Programmer project file
is separate and is similar in concept to a document.
project workspace
An area of the CX-Programmer reserved for displaying and selecting project content.
Rack
The apparatus to which a unit is fixed.
RAM
Random Access Memory.
Reset
Turning a bit or signal OFF or changing it to its set value or to zero.
Run Mode
PLC mode of operation during which device information is typically read-only.
Rung
A logical circuit of a ladder program (a connection from the left to the right bus-bars).
A rung can encompass one or more columns and rows.
Section
A part of a PLC program, like a chapter is to a book. The sections are combined in
order to form a program, and scanned in order by the PLC.
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