BECKHOFF EtherCAT Technology Section I - Manual (Page 19)

ABBREVIATIONS
Slave Controller – Technology I-XIX
Subnet Mask
Divides the IP address into two parts: a subnet address (in an area separated
from the rest by routers) and a network address.
Switch Also known as Bridge. Active network component to connect different
EtherCAT participants with each other. A switch only forwards the frames to the
addressed participants.
SyncManager ESC unit for coordinated data exchange between master and slave µController
SyncSignal Signal generated by the Distributed Clocks unit
TCP Transmission Control Protocol: Higher-level IP protocol that ensures secure
data exchange and flow control.
TX Transmit
TXPDO Transmit PDO, i.e. Process Data that will be transmitted by ESC20
UDP User Datagram Protocol: Non-secure multicast/broadcast frame.
UTP Unshielded Twisted Pair: Unshielded cable with at least 2 core pairs are not
recommended for industrial purpose but are commonly used in areas with low
electro-magnetic interference.
VLAN Virtual LAN
VoE Vendor specific profile over EtherCAT
WD Watchdog
WKC Working Counter
XML Extensible Markup Language: Standardized definition language that can be
interpreted by nearly all parsers.
XML Parser Program for checking XML schemas.