General information
Operating Manual EtherCAT for, PMCtendo DD5 and PMCprotego D
1002906-EN-02
6
1.4
Abbreviations used
Abbreviation
Meaning
AL
Application Layer: The protocol used dir-
ectly by the process instances.
Cat
Category - Classification also for the cables
used for Ethernet communication. EtherCAT
cables must be classified at least in cat-
egory 5.
DC
Distributed Clocks Mechanism (Distributed
Clock procedure) to sychronise EtherCAT-
Slaves and Masters.
DL
Data Link, also Layer 2. EtherCAT used in
accordance with IEEE 802.3 standardised
Ethernet communication.
EtherCAT (ECAT)
RT standard for industrial Ethernet Control
Automation Technology
FPGA
Field Programmable Gate Array (logic block
that can be modified on-site)
FTP
File Transfer Protocol
HW
Hardware
ICMP
Internet Control Message Protocol: Protocol
to display IP errors.
IEC
International Electrotechnical Commission:
International standardisation committee
IEEE
Institute of Electrical and Electronics Engin-
eers, Inc.
IOS/OSI Model
ISO Open Systems Interconnection Basic
Reference Model (ISO 7498) (ISO-OSI layer
model): Describes the dividing of the com-
munication in seven layers.
LLDP
Lower Layer Discovery Protocol
MAC
Media Access Control
MII
Media Independent Interface: Standard in-
terface between Ethernet Controller and the
routers.
MDI
Media-independent interface:
Signal transmission using pins.
MDI-X
Media-dependent interface (crossover):
Crossed wiring
OSI
Open System Interconnect
OUI
Organizationally Unique Identifier - the first
3 Bits of an Ethernet address. They are as-
signed to companies or organisation and
the can also be used for Protocol Identifiers
(e.g.LLDP).
