WAGO 750-341 Manual page 201

Traps
Traps are unsolicited messages, which are sent by an agent to a management
system, as soon as somewhat unexpected and for the management system
interesting happens. Traps is with from the hardware admitted interrupts
comparably. A well-known example of a Trap message is the „Blue screen"
with Win95/98.
Twisted Pair
Twisted pair cables (abbreviated to TP).
U
UDP protocol
The user datagram protocol is a transport protocol (layer 4) of the ISO/OSI-
reference model which supports data exchange between computers without a
connection. UDP runs directly on top of the underlying IP protocol.
URL
Abbreviation for uniform resource locator.
Address form for Internet files which are mostly applied within the World
Wide Web (WWW). The URL format makes the unambiguous designation of
all documents on the Internet possible by describing the address of a
document or object which can be read by a web browser. URL includes the
transmission type (http, ftp, news etc.), the computer which contains the
information and the path on the computer. URL has the following format:
Document type//Computer name/List of contents/File name.
UTP
The UTP cable is a symmetrical, not-protected cable with twisted colored
wires in pairs. This type of cable, which there is in execution two-in pairs
and four-in pairs, is the dominating type of cable in the floor wiring and the
terminal wiring.
W
WAGO-I/O-PRO CAA
Uniform programming environment, programming tool from WAGO
Kontakttechnik GmbH for the creation of a control program according to
IEC 61131-3 for all programmable fieldbus controllers. Allows testing,
debugging and the start-up of a program.
WAGO-I/O-SYSTEM 750
ETHERNET TCP/IP
Glossary • 197