Glossary - B&R Mobile Panel 40 User Manual

Appendix A
A.6 Glossary
NC
Nominal current
BIOS
Baud rate
Bit
Browser
B&R Automation Runtime
CPU
CAN
Controller
Dial-up
DRAM
ECAD
EMC
EN
ESD
Electrical safety
Electromagnetic compatibility
Ground
Ergonomics
Ethernet
Errors
Fieldbus
138
Numerical Control > Numerical Control
The nominal current is the RMS value for the phase current (current in the motor supply line) when generating
the nominal torque at the nominal speed. This is possible for any length of time if the environmental conditions
are correct.
Basic Input/Output System is abbreviated as BIOS. Core software for computer systems with essential routines
for controlling input and output processes on hardware components, for performing tests after system start and
for loading the operating system. Although BIOS is used to configure a system's performance, the user does not
usually come into contact with it.
Measurement unit for data transfer speed. It indicates the number of states for a transferred signal per second
and is measured using the baud unit of measurement. 1 baud = 1 bit/s or 1 bps
A binary digit is the smallest discrete information unit. A bit can have the value 0 or 1.
A software tool for searching and reading websites. The most famous browsers are Microsoft Internet Explorer
and Netscape Navigator.
Windows-based program for creating installation disks to install B&R Automation Runtime™ on the target system.
A Central Processing Unit is the processing and control unit of a computer; the unit which interprets and executes
commands. Also known as the central processor or microprocessor. A CPU has the capability to load commands,
to decode and to execute, as well as to transfer information to and from other resources.
Controller Area Network is a serial bus system. Structure according to ISO 11898; Bus medium: twisted pair.
Good transfer properties in short distances less than 40 m with a 1 Mbit/sec data transfer rate. Maximum number
of stations: Theoretically unlimited, but practically limited up to 64. Real-time capable (i.e. defined maximum
latency times for messages with high priority). High reliability using error detection, error handling, troubleshooting.
Hamming distance.
A device component which allows access to other devices on a computer subsystem. A disk controller, for ex-
ample, allows access to hard disks and disk drives and is responsible both for physical and logic drive access.
Remote data transfer takes place over the telephone network using a modem or an ISDN adapter.
Dynamic Random Access Memory is a form of dynamic RAM consisting of an integrated semiconductor circuit
that stores information based on the capacitor principle. Capacitors lose their charge in a relatively short time.
Therefore, dynamic RAM circuit boards must contain a logic that allows continual recharging of RAM chips. Since
the processor cannot access dynamic RAM while it is being recharged, one or more waiting states can occur
when reading or writing data. Although it is slower, dynamic RAM is used more often than static RAM since the
simple design of the circuits means that it can store four times more data than static RAM.
Electrical CAD systems are configuration tools which allow the efficient creation and processing of electrical
circuit diagrams and schematic diagrams as well as the automatic generation of cross-reference maps, cable and
terminal diagrams, parts lists as well as order and manufacturing documents.
Electromagnetic Compatibility represents the ability of a device or a system to function satisfactorily in its electro-
magnetic environment without introducing intolerable electromagnetic disturbances to anything in that environ-
ment [IEV 161-01-07].
European Norm see CENELEC
Electrostatic discharge > Discharge of static electricity. ESD is a process for charge equalization between solid,
liquid or gaseous media, which are electrically charged in a different way. It is usually accompanied by a surface,
brush, spark discharge or also flashing discharge phenomenon. However, it can also take place via a contact point
(excluding line-conducted), and only when the potential difference before the contact does not exceed 330 volts.
Sparking can cause flammable gases and vapors or explosive compounds to ignite and through the discharge of
currents and fields can damage or destroy electronic components or interfere with the functions of their electronic
operating equipment. The first-named effect falls into the jurisdiction of Fire and Explosions Protection and Tech-
nical Safety. The second-named area is the responsibility of the protection of Electrostatic Discharge Sensitive
components (ESDS) and Electromagnetic Compatibility (EMC). Possible human body discharge from handling
switching circuits, circuit boards, control elements, and container surfaces in transport, installation, testing, oper-
ating, repairs and service are particularly important issues for people dealing with electronic device technology.
The following electrical values should be calculated: Energy content 10 to 30 mJ, electrostatic voltage 0.1 to 20
kV, strength of discharge current up to 30 A (pulse amplitude, current change speed up to 100 A/ns, electrical
field strength 1 to 4 kV/m, magnetic field strength up to 15 A/m within centimeters of the discharge).
Protection against risks caused by electricity > Safe operation of electrical and electronic modules, components,
devices, machines, equipment and systems must be guaranteed for the users and operators through applicable
safety regulations and standards.
Electromagnetic compatibility > In accordance with EMVG: The ability of a device or a system to function satis-
factorily in its electromagnetic environment without introducing intolerable electromagnetic disturbances to any-
thing in that environment [IEV 161-01-07])
In the context of electro-technical theory, the term 'ground' is more or less understood as good conductive ground,
which does not have any potential differences outside the area of influence or any other electrical phenomena.
A word derived from the Greek words 'Ergon' [work] and 'nomos' [rules, law]. Part of the work sciences, ergonom-
ics is a scientific discipline that examines the interaction between humans and their work environment. The goal
is to improve the working conditions and reduce work-related stresses and strains.
Baseband bus system from RANK XEROX. Originally developed for linking minicomputers in the early 1970s.
Ethernet is based on the CSMA/CD access procedure. Coaxial cables and/or twisted pair cables [twisted copper
wire pairs] serve as transfer medium. Transfer speeds: 10 Mbps [Ethernet], 100 Mbps [Fast Ethernet] as well
as 1 Gbps and 10 Gbps [Gigabit Ethernet], widely growing technology used for networking computers in a LAN,
standardized since 1985 [IEEE 802.3 and ISO 8802-3]. Ethernet technology has established itself in office us-
age. After the enabling the possibility of extremely tough real-time demands and the adaptation of the device
technology [bus cable, path fields, connection boxes] to the operating conditions of the industrial world, which
are considerably tougher than those in the area of office use, Ethernet is further advancing into the area of au-
tomation technology.
Fault > in accordance with IEC 61508: Abnormal operation, which can reduce or prevent the capability of a
functional unit to perform a required function.
Bus system in the area close to the process, for directly connecting sensors and actuators with own intelligence.
On a fieldbus, small amounts of data are transferred between sensors, actuators and control devices in digital
form. Transfer must occur as fast as possible (i.e. near real-time). Furthermore, a fixed minimum and maximum
response time must be guaranteed. Serial fieldbuses are replacing conventional wiring more and more in modern
automation systems. Serial networking of the components saves time during planning and installation. Addition-
ally, the size of control cabinets is reduced and failure and maintenance times are shortened, thereby achieving
better system availability. System expansions, changes and updates are easy to implement.
Mobile Panel 40/50 User's manual V1.80