Appendix
MSX-ilog-xx-xx
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ADDI-DATA
®
PARTNER FÜR PRÄZISION
6
Appendix
6.1 Glossary
Acquisition
Data acquisition means gathering information
from sources such as sensors and transducers in
an accurate, timely and organised manner.
Modern systems convert this information to
digital data which can be stored and processed
by a computer.
Buffer
The buffer is used for the temporary storage of
information that is only needed at a later time.
Cable shield
This is the conductive cover for a cable or a line
to protect individual leads or the whole cluster
against electromagnetic interference from
outside. Cable shields consist either of a
network of bare copper wires (mesh shield,
density >=80%), copper wires with counter
helix conductors, copper strips or conductive
plastic layers.
ESD
= Electrostatic Discharge
ESD is the sudden and momentary electric
current that flows between two objects at
different electrical potentials caused by direct
contact or induced by an electrostatic field.
The term is usually used in the electronics and
other industries to describe momentary
unwanted currents that may cause damage to
electronic equipment.
Event
An event is an occurrence detected by the
MSX-ilog data logger. Where e.g. a short-circuit
is detected and an event is activated, a short-
circuit warning can be sent via the event server.
IP degree of protection
The IP standard defines the degree of
protection of a system against dirt and water.
The first figure after the “IP” (e.g. 6 in IP 65)
indicates the degree of protection against solid
objects penetrating the housing.
The second figure indicates the degree of
protection against liquids penetrating the
housing.
In IP 65, the figures 6 and 5 have the following
meaning: 6 = full protection against moving
parts and against dirt penetration; 5 =
protection against jets of water from any
direction.
In IP 40, the figure 4 equates to protection
against contact with small objects and
protection against small foreign bodies (larger
than 1 mm). The figure 0 means that there is
no protection.
Level
Logic levels are defined for processing and
displaying information.
In binary switches, voltages are used for digital
values. Here, the two voltage ranges H (high)
und L (low) represent the information. The ‘H’
range is closer to plus infinity; the ‘H’ level
corresponds to digital 1. ‘L’ denotes the range
closer to minus infinity; the ‘L’ level
corresponds to digital 0.
Optical isolation
Optical isolation means that two networks are
only connected through an optoelectric
transmitter and receiver with no electrical
continuity between the two networks.
Short-circuit
A short-circuit is an electrical circuit in a device
of lower resistance than that of a normal
circuit, typically resulting from the unintended
contact of components, and consequent
accidental diversion of the current.
Trigger
A trigger is a pulse or signal for starting or
stopping a special task. Triggers are often used
for controlling data acquisition.
