Rockwell Automation 1772-L8_LW_LWP_LX_LXP,D17726.5.8 User Manual - Manual (Page 425)

Glossary
Appendix D
D-6
CRT Terminal
A terminal containing a cathode ray tub that displays user programs
and information.
Cursor
(1) The intensified or blinking element in the user program or file display.
(2) A means for indicating on a CRT screen where data entry or
editing occurs.
Cycle
(1) A sequence of operations that is repeated regularly. (2) The time it
takes for one such sequence to occur.
Data
A general term for any type of information.
Data Address
A location in memory where data can be stored.
Data Files
Groups of data values stored in the data table. These files are manipulated
by the user program as required by the application.
Data Table
The part of processor memory that contains I/O values and files where data
is monitored, manipulated, and changed for control purposes.
Data Terminal
(1) A device used only to send or receive data. (2) A peripheral device
which can load, monitor, or dump processor memory data, including data
table or data files. This also includes CRT devices and line printers.
Debugging
The process of detecting, locating, and correcting errors in hardware
or software.
Decimal
Pertains to the base-10 numbering system.
Delimiter
A character that, when placed before and/or after a string of data, causes
the data to be interrupted in a predetermined manner.
Diagnostic Command
Allows a computer to change or monitor the status of an interface module.
D