PART 2: CX-Server PLC Tools
OMRON
GLOSSARY OF TERMS – CX-Server – PLC Tools User Manual
CX-Server PLC Tools_ Page 151
IO
Input /Output.
IP address table
A table containing the IP addresses for all the devices on the Ethernet.
IP address
An address for a device on the Ethernet.
IP router table
A table containing the addresses for each interface on a network.
IP
Internet Protocol.
Item
A unique name for a data item within a topic.
LAN
Local Area Network.
Link Relay Area
A common data area allowing the transfer of data between PLCs connected by a Data
Link; the information held in this area in the memory of each PLC is identical.
Link system
A system that links PLCs together.
Link unit
A unit which connects a device to the network.
Link
A connection between two units established either by software or a hardware device.
Load
Placing a program or data into an area of computer or PLC memory.
Local area network
A network located within a limited area (normally the user’s premises).
Local network address
The address of the network to which a PLC is connected.
Local network number
The number of the unit connecting the PLC to the network.
Local table
A table containing the details of the networks to which a PLC belongs.
LREAL
LREAL (Double Floating Point) type is as the IEEE754 Double precision (1.7E
+308/-307) as defined by Microsoft®.
LSS
A file format supported by the CX-Server Import tool.
Mailbox
A communications protocol.
Mark parity
The parity bit is always set to 1.
Master
A controlling device which sends data and/or instructions to a slave device.
Mb
Megabites – A means of defining computer memory size.
Memory area
Addressable area of storage space in a device.
Memory Card component
This CX-Server component manages the file storage to and from PLC memory cards.
Memory Card Writer
A device which writes data to a memory card.
Memory card
A data storage medium which can hold both programs and data.
MHz
Megaherts.
Micro host link
A link to a ‘micro’ device acting as a host.
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-Server runs only under Microsoft Windows. DDE functions communicating
with other applications supported by CX-Server use Microsoft Windows as a basis.
Modem
A device with the ability to convert digital data from a computer into analogue form
and transmit it over a telecommunications line and also to convert received analogue
signals into digital form.
Monitor mode
A PLC operational mode which allows the device, during normal execution, to review
the condition of the Data Link (including the PLCs/nodes on that link).
n
A variable number.
Native data format
The format in which data is handled by a communications protocol; for example,
ASCII or binary.
Network bridge
A unit that connects two or more networks together.
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