320 • Glossary
Modular I/O System
ETHERNET TCP/IP
I
IAONA Europe
IAONA Europe (Industrial Automation Open Networking Alliance) is an or-
ganization for industrial network technology with the objective to establish
ETHERNET in automation technology.
Further information on this subject is available on the Internet under:
www.iaona-eu.com.
ICMP protocol
TA protocol for the transmission of status information and error messages of
the IP, TCP and UDP protocols between IP network nodes. ICMP offers,
among others, the possibility of an echo (ping) request to determine whether
a destination is available and is responding.
IEC 61131-3
International standard published in 1993 for modern systems with PLC
functionality. Based on a structured software model, it defines a number of
high performance programming languages that can be used for various
automation tasks.
IEEE
Institute of Electrical and Electronic Engineers.
IEEE 802.3
IEEE 802.3 is a IEEE standard. ETHERNET only supports the yellow cable
as a medium. IEEE 802.3 also supports S-UTP and wideband coaxial cable.
The segment lengths range from 500 m for yellow cable, 100 m for TP and
1800 m for wideband coaxial cable. A star or a bus topology is possible.
ETHERNET (IEEE 802.3) uses CSMA/CD as a channel access method.
Intel format
Set configuration of the fieldbus coupler / controller to establish the process
image. In the coupler/controller memory, the module data is aligned in dif-
ferent ways, depending on the set configuration (Intel/Motorola-Format,
word-alignment,...). The format determines whether or not high and low
bytes are changed over. They are not changed over with the Intel format.
Internet
A collection of networks interconnected to each other throughout the world.
Its most well known area is the World Wide Web.
