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Device Manual SmartSPS AC14 with EtherNet/IP interface (AC1421, AC1422), Firmware 3.1.2
2015-11-30
Glossary of Terms
Depending on the device, the inputs and
outputs can also be monitored for their correct
function.
- wire break,
- short circuit,
- value outside range.
For diagnosis, configuration and log data can
be used, created during the "normal" operation
of the device.
The correct start of the system components is
monitored during the initialisation and start
phase. Errors are recorded in the log file.
For further diagnosis, self-tests can also be
carried out.
>
DRAM
DRAM =
D
ynamic
R
andom
A
ccess
M
emory.
Technology for an electronic memory module
with random access (Random Access
Memory, RAM). The memory element is a
capacitor which is either charged or
discharged. It becomes accessible via a
switching transistor and is either read or
overwritten with new contents. The memory
contents are volatile: the stored information is
lost in case of lacking operating voltage or too
late restart.
>
E
EDS
EDS =
E
lectronic
D
ata
S
heet
An EDS is a device description fiile in ASCII
format, comparable to the GSD or the GSDML
file of Profibus or Profinet.
>
EMC
EMC =
E
lectro
M
agnetic
C
ompatibility.
According to the EC directive (2004/108/EEC)
concerning electromagnetic compatibility (in
short EMC directive) requirements 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 interference.
>
Ethernet
Ethernet is a widely used,
manufacturer-independent technology which
enables data transmission in the network at a
speed of 10...10 000 million bits per second
(Mbps). Ethernet belongs to the family of
so-called "optimum data transmission" on a
non exclusive transmission medium. The
concept was developed in 1972 and specified
as IEEE 802.3 in 1985.
>
Explicit Messaging
Acyclic data exchange between
→ I/O scanner
and
→ I/O adapter based on the TCP/IP
communication protocol.
>
F
FC
FC = flat cable. The yellow or black AS-i cable
is meant.
>
FE – functional earth
F
unctional
e
arth is a reference potential which
is not connected to protective earth or only
connected when special measures are taken.
The functional earth serves as equalisation of
potential for an ungrounded installation (e.g.
→SELV).
>
Fieldbus
A
→bus for industrial applications:
mechanically extremely robust and excellent
data protection.
>
Firmware
System software, basic program in the device,
virtually the
→runtime system.
The firmware establishes the connection
between the hardware of the device and the
application program. The firmware is provided
by the manufacturer of the controller as a part
of the system and cannot be changed by the
user.
>
Flash memory
Flash ROM (or flash EPROM or flash memory)
combines the advantages of semiconductor
memory and hard disks. Similar to a hard disk,
the data are however written and deleted
blockwise in data blocks up to 64, 128, 256,
1024, ... bytes at the same time.
Advantages of flash memories
The stored data are maintained even if
there is no supply voltage.