User Manual

97
Glossary
PL
PL (Power Line) is a connection via the
AC  V power supply grid.
Plug and play
The possibility of connecting new
devices without having to undertake
any additional settings or adjustments
PoE
PoE (Power-over-Ethernet) refers to a
method for supplying power to network-
able devices over the -wire Ethernet
cable.
Protocol
A system of rules that specify the format,
content, meaning and order of messages
trans mitted between various entities of
the same communications system
RTU
Remote terminal unit
SELV
Safety extra-low voltage
TCP
The TCP (Transmission Control Protocol)
is part of the TCP/IP protocol family.
As a connection-oriented protocol, TCP
assumes within TCP/IP the task of data
security and data flow control, and
initiates countermeasures in the event
of data loss.