Practical_modern_SCADA_protocols_-_dnp3,_60870-5_and_Related_Systems

Appendix A: Glossary 403
I/O address
ICMP
IEC
IEE
IEEE
IFC
Impedance
Inductance
Insulation
Resistance (IR)
Interface
Interrupt handler
Interrupt
IP
IR
ISA
ISDN
ISO
ITU
IVR
A method that allows the CPU to distinguish between different
hardware components in a system.
Internet Control Message Protocol.
International Electrotechnical Commission.
Institution of Electrical Engineers.
Institute of Electrical and Electronic Engineers. An American based
international professional society that issues its own standards
and is a member of ANSI and ISO.
International FieldBus Consortium.
The total opposition that a circuit offers to the flow of alternating
current or any other varying current at a particular frequency.
It is a combination of resistance R and reactance X, measured
in ohms.
The property of a circuit or circuit element that opposes a change
in current flow, thus causing current changes to lag behind
voltage changes. It is measured in henrys.
That resistance offered by an insulation to an impressed
DC voltage, tending to produce a leakage current though the
insulation.
A shared boundary defined by common physical interconnection
characteristics, signal characteristics and measurement of
interchanged signals.
The section of the program that performs the necessary operation
to service an interrupt when it occurs.
An external event indicating that the CPU should suspend its
current task to service a designated activity.
Internet Protocol.
Infrared.
Industry Standard Architecture (for IBM Personal Computers).
Integrated Services Digital Network. Telecommunications network
that utilizes digital techniques for both transmission and
switching. It supports both voice and data communications.
International Standardization Organization.
International Telecommunications Union.
Integrated Voice Recognition.