Specifications

Glossary
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T
TC
thermocouple. A TC device is a bimetallic temperature transducer that provides a
temperature value by measuring the voltage differential caused by joining together
two different metals at different temperatures.
TCP
transmission control protocol. A connection-oriented transport layer protocol that
provides reliable full-duplex data transmission. TCP is part of the TCP/IP suite of
protocols.
telegram
A data packet used in serial communication.
TFE
transparent factory Ethernet. Schneider Electric’s open automation framework
based on TCP/IP.
Tx
transmission. For example, in a CAN-based network, a PDO is described as a
TxPDO of the device that transmits it.
U
UDP
user datagram protocol. A connectionless mode protocol in which messages are
delivered in a datagram to a destination computer. The UDP protocol is typically
bundled with the Internet Protocol (UPD/IP).
V
varistor
A 2-electrode semiconductor device with a voltage-dependant nonlinear resistance
that drops markedly as the applied voltage is increased. It is used to suppress
transient voltage surges.