Rockwell Automation 1772-L8_LW_LWP_LX_LXP,D17726.5.8 User Manual - Manual (Page 440)

Glossary
Appendix D
D-21
Reply
Data transmitted in response to a request.
Report
An application data display or printout containing information in a
user-designed format. Reports could include operator messages, part
records, and production lists. Initially entered as messages, reports are
stored in a memory area separate from the user program.
Report Generation
The printing or displaying of user-formatted application data by means of a
data terminal. Report generation can be initiated by means of either a user
program or a data terminal keyboard.
ROM
Read Only Memory. A type of memory with data content that cannot be
changed or is changed infrequently. In use, bits and words are read on
demand, but not changed.
RS-232-C
An EIA electrical connection standard. Most often used as a standard
interface for serial binary communication between data terminal equipment
and data communications equipment.
Rung
A group of processor instructions which controls an output or storage bit,
or performs other control functions such as file moves, arithmetic and/or
sequencer instructions. This is represented as one section of a logic
ladder diagram.
Scan Time
See Programming Scan Time and I/O Scan Time.
Screen
The viewing surface of a CRT where data is displayed.
Scrolling
The vertical movement of data on a CRT display caused by the dropping of
one line of displayed data for each new line added.
Search Function
Allows the user to quickly display and/or edit any instruction in the
processor program.
Signal
The event or electrical quantity that conveys information from one point to
another.
S