PART 3: CX-Server Runtime
GLOSSARY OF TERMS – CX-Server – Runtime
OMRON
CX-Server Runtime_Page 70
Node
A position at which a device can be located on the network, consisting of a link unit
mounted to a device or PLC which in turn interfaces with a peripheral device or a
computer.
NSB
Network Service Board.
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.
Packet
A unit of information transmitted across the network containing source and
destination address information together with the actual data.
Parity
A type of validation check performed on transmitted information; data can be tested
for either even, odd, none, mark or space parity. The type of parity check involved is
indicated by the status of the parity bit.
Path
The location of a file including the drive, directory name plus any subdirectories and
the file name together with its associated extension.
Peripheral
A device which aids system operation rather than being central to its functioning.
Performance Monitor tool
A CX-Server tool for monitoring communications throughput and for displaying CX-
Server’s current performance level (i.e. a check to see if CX-Server is becoming
overloaded).
Ping test
A standard Ethenet communications test.
PLC Error component
This CX-Server component displays and manages PLC errors.
PLC Memory component
This CX-Server component allows the user to view, edit and monitor either channels
(words) or individual bits in areas of the PLC.
PLC Setup component
This CX-Server component 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 I/O 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 I/O mechanism.
Port
A device connection point allowing data entry and exit.
Program
A set of instructions which 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.
Programmable Read Only Memory
An area of memory which can be updated with programs and data only once after
manufacture; once this area has been written to, it can only be read, not modified.
Project
OMRON configuration file inherited from the invoking application.
Refer also to CX-Server Project.
PROM writer
A device which writes the programs and data into PROM.
PROM
Programmable Read Only Memory.
Protocol
A set of rules governing the transmission of data.
Rack
The apparatus to which a unit is fixed.
RAM
Random Access Memory.
Registered IO Table
The internal PLC table: this is the one used by the PLC when running, regardless of
the state of the actual hardware. It can be read and, for CV-series PLCs, written to by
the CX-Server software.
Root
The highest level of a directory.
Root group
The highest level group in a CX-Server project.
Rotary switch
Indicates the method of calling a device by generating a series of pulses.
Routing table
A table containing the information necessary to allow communications between
different networks including local and gateway network address details.
Summary of Contents for Sysmac WS02-CXPC1-EV3
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