Omron SYSMAC C200HS Installation Manual page 220

debugging
default condition
distributed control
EEPROM
electrical noise
EPROM
Expansion I/O Unit
factory computer
flag
High-speed Counter
host computer
IBM PC/AT or compatible
instruction line
interface
I/O devices
I/O point
206
Glossary
The process of checking for errors in a program.
The original condition of a function or system. For example, the Ladder Support
Software's (LSS) installation utility will place the LSS in the C:\LSS directory, but
this default condition can be changed so that it places the LSS in a different
directory.
An automation concept in which control of each portion of an automated system
is located near the devices actually being controlled, i.e., control is decentralized
and "distributed" over the system. Distributed control is a concept basic to PC
Systems.
[E(lectrically) E(rasable) P(rogrammable) R(ead) O(nly) M(emory)] A type of
ROM in which stored data can be erased and reprogrammed. This is accom-
plished using a special control lead connected to the EEPROM chip and can be
done without having to remove the EEPROM chip from the device in which it is
mounted.
Electric 'static' that can disturb electronic communications. The 'snow' that can
appear on a TV screen is an example of the effects of electrical noise.
[E(rasable) P(rogrammable) R(ead) O(nly) M(emory)] A type of ROM in which
stored data can be erased, by ultraviolet light or other means, and repro-
grammed.
An I/O Unit for a Package-type PC that provides more I/O points to the PC.
A general-purpose computer, usually quite similar to a business computer, that
is used in automated factory control.
A bit that is turned ON and OFF automatically by the system in order to provide
status information.
A Special I/O Unit. A High Speed Counter Unit counts independently of the PC's
cycle time. This allows counting of very short, fast signals.
A computer that is used to transfer data to or receive data from a PC in a Host
Link system. The host computer is used for data management and overall sys-
tem control. Host computers are generally small personal or business comput-
ers.
A computer that has similar architecture to, and is logically compatible with an
IBM PC/XT computer; and that can run software designed for that computer.
A succession of instructions which begins with a load instruction at the left bus
bar and ends at a right bus bar.
An interface is the conceptual boundary between systems or devices and usual-
ly involves changes in the way the communicated data is represented. Interface
devices such as NSBs perform operations such as changing the coding, format,
or speed of data.
The devices which are connected to the terminals on I/O Units, Special I/O Units,
or Intelligent I/O Units. I/O devices may be part of the Control System if they
function to help control other devices, or they may be part of the controlled sys-
tem if they interact directly with it.
The place at which an input signal enters the PC System or an output signal
leaves the PC System. In physical terms, an I/O point corresponds to terminals