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PART 2: CX-Server PLC Tools
OMRON
GLOSSARY OF TERMS – CX-Server PLC Tools
CX-Server PLC Tools_Page 173
GLOSSARY OF TERMS
Actual IO Table
The real hardware configuration of the PLC units and slots on power-up.
Address
A location in memory where data or programs are stored. It can also identify a location
of a node on a network.
Application
A software program that accomplishes a specific task. Examples of applications are
CX-Server, CX-Programmer, CX-Protocol and Microsoft Excel.
ASCII
American Standard Code for Information Interchange.
Auxiliary Area
An area of PLC memory which normally contains transmission Counters, flags and
control bits. It also retains the status of the device during power failure.
Baud rate
The speed of data transmission in terms of the number of bits per second that are being
sent.
BCD
Binary Coded Decimal.
Binary Coded Decimal
A data format supported by CX-Server.
Binary
A data format supported by CX-Server. A number system format to the base 2, i.e.
employing the digits 0 and 1.
Bit
A digit used in binary notation which can take the value 0 or 1. The value of a bit, or
combination of bits, can represent the status of a device or can be used in programming.
Boolean
A type of point or symbol where the value can be one of two states. Essentially the two
states are ‘0’ and ‘1’, but these states can be assigned a meaningful designation.
Bridge
A device connecting local area networks of similar architectures together.
Broadcast address
An address held in common by all nodes on a network to which the same data is
transmitted simultaneously.
Bus
A communications path along which data can be transmitted or received between the
units connected to it.
Central Processing Unit
The part of the PLC which can store programs and data, execute the instructions in
program, and process input and output signals in order to communicate with other,
external, devices.
Clipboard
An area within the windows environment where data can be stored temporarily or
transferred between applications.
Command modifier
An optional part of an address string indicating the modification to be performed on the
data at that address (within PLC memory) when it is accessed.
Common link parameter
The common words used by all PLCs in a Data Link (within a SYSMAC LINK
system).
Compact Flash
A type of memory card fitted to a PLC.
Components
CX-Server is made up of six components accessible from an invoking application.
Control bit
A bit assigned a controlling role in the functioning of a device; its status is set via a
program to achieve this function.
Controller Link
A network that can send and receive large data packets flexibly and easily among the
OMRON PLCs.
Counter area
An area of PLC memory containing program counters and their related completion
flags.
Counter
An area of memory reserved for the purposes of counting the number of times an event
has occurred.
CPU bus link area
An area of PLC memory allocated to the CPU bus unit.
CPU type
The type of CPU available to a specific device, the amount of memory available to a
PLC varies according to the CPU involved.
CPU
Central Processing Unit.
CS-series
Indicates either a CS1G-H, CS1H-H, CS1D-S, or CS1D-H.
CJ-series
Indicates either a CJ1G-H, CJ1H-H, or CJ1M.
Содержание CX-PROGRAMMER V9
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