IFM Ecomat 300 AC1307, Основное руководство устройства

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17BTerms and abbreviations
18-2
DHCP DHCP =
D
ynamic
H
ost
C
onfiguration
P
rotocol = protocol for
dynamic configuration by the
→
host
DHCP is a protocol which offers the dynamic configuration of
IP addresses and thus coherent information. The protocol
supports the further use of IP addresses which are only
available in a limited number by a centralised management
of the address assignment.
At first power on of a participant in a network the participant
registers with a server using this service. The server assigns
a local free IP address to the participant.
EMC EMC =
E
lectro-
M
agnetic
C
ompatibility
According to the EC directive (89/336 EEC) concerning elec-
tromagnetic compatibility (in short EMC directive) require-
ments are made for electrical and electronic apparatus,
equipment, systems or components to operate satisfactorily
in the existing electromagnetic environment. The devices
must not interfere with their environment and must not be
adversely influenced by external electromagnetic interfer-
ence.
Ethernet Ethernet is a widely used, manufacturer-independent tech-
nology which enables data transmission in the network at a
speed of 10 or 100 million bits per second (Mbps). Ethernet
belongs to the family of so-called "optimum data transmis-
sion" on a non exclusive transmission medium. The concept
developed in 1972 was specified as IEEE 802.3 in 1985.
FE FE =
F
unctional
E
arth
Functional earth is a reference potential which is not con-
nected to protective earth or only connected when special
measures are taken. The functional earth serves as equali-
sation of potential for an ungrounded installation (e.g. SELV).
Fieldbus
A → bus for industrial applications: extremely robust with
respect to mechanics and data technology
Firmware Basic program in the device, virtually the operating system
The firmware establishes the connection between the hard-
ware of the device and the user software.
Gateway Coupler
Gateways enable connection of completely different sys-
tems. Gateways are used when two incompatible network
types are to be connected by converting the protocol of one
system to the protocol of the other system.
Here: connection between AS-i and higher-level fieldbus
systems such as
→
Profibus DP,
→
DeviceNet, Interbus-S or
other interfaces, e.g. RS-485. The device includes an AS-i
master which is directly coupled to the
→ host interface (e.g.
→
Profibus DP slave).
Host The controller in the hierarchy above the AS-i master, e.g. a
PLC or a processor, also called "fieldbus master".
ID ID =
Id
entifier
Name to differentiate the devices / participants connected to
a system.