IFM Electronic CR0403 Programming Manual page 216

ifm Programming Manual ecomatmobile
Glossary of Terms
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Embedded software
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.
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EMC
EMC = Electro Magnetic Compatibility.
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.
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EMCY
abbreviation for emergency
Message in the CANopen protocol with which errors are signalled.
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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.
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EUC
EUC = Equipment Under Control.
EUC is equipment, machinery, apparatus or plant used for manufacturing, process, transportation,
medical or other activities (→ IEC 61508-4, section 3.2.3). Therefore, the EUC is the set of all
equipment, machinery, apparatus or plant that gives rise to hazards for which the safety-related
system is required.
If any reasonably foreseeable action or inaction leads to →hazards with an intolerable risk arising from
the EUC, then safety functions are necessary to achieve or maintain a safe state for the EUC. These
safety functions are performed by one or more safety-related systems.
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F
FiFo
FIFO (First In, First Out) = Operating principle of the stack memory: The data packet that was written
into the stack memory first, will also be read first. Each identifier has such a buffer (queue).
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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.
• Due to the absence of moving parts, flash is noiseless and insensitive to shocks and magnetic
fields.
BasicController (CR0403) Runtime System V03.02
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2015-04-01