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Glossary
10BASE-T
10 Mbit/s twisted pair Ethernet standard.
Standardized in IEEE 802.3i
APIPA
Automatic Private IP Addressing
Class A
Class
A
equipment
commercial or light industrial environments.
DCE
Data communications equipment. DTE and
DCE devices have different pinouts for
RS-232 connectors. A Modem for example is
a DCE.
DIN rail
35 mm wide mounting bracket standardized
in DIN/EN 50022.
DTE
Data terminal equipment. DTE and DCE
devices have different pinouts for RS-232
connectors. A PC for example is a DTE.
EIA-232
Standard for serial transmission of data
between two devices, also known as RS-232
and V.24.
EIA-422
ANSI/TIA/EIA-422
transmission of data between two devices,
also known as RS-422 and V.11.
EIA-485
ANSI/TIA/EIA-485
transmission of data between multiple
devices, also known as RS-485.
EIA-574
Standard for the pinout of serial D-sub
connectors.
EMC
Electromagnetic compatibility
UMMBDC200-2201
is
that
used
standard
for
serial
standard
for
serial
EMI
Electromagnetic interference
ESD
Electrostatic discharge. ESD can damage
electronic equipment.
Ethernet
The standard for local area networks
developed jointly by Digital Equipment
Corp., Xerox, and Intel. Ethernet is used as
the underlying transport vehicle by several
upper-level protocols, including TCP/IP.
Gateway
in
A network device that passes data between
different networks or fieldbusses.
Gateway address
The IP address of the gateway or router used
to access the Internet from the local are
network.
IEEE
Institute
of
Engineers
IP
Ingress Protection Rating standardized in
IEC 60529. Standard for various grades of
electrical enclosures.
IP address
A numeric address used by computer hosts
to transmit and receive information over the
Internet.
ISO
International Standards Organisation
MAC address
Every piece of Ethernet hardware has a
unique number assigned to it called it's MAC
address. MAC addresses are administered
and assigned by the IEEE organization.
Modbus
Fieldbus protocol used in the process
automation industry. It uses a master
and slave structure. Originally developed
by Modicon, now part of Schneider
Automation.
Electrical
and
Electronics
Glossary
37
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