Appendix
138
05/01 AWB2700-1384GB
bus system All units together that communicate
with each other via the bus.
CPU Central Processing Unit -Calculation
and control unit.
D-type connector 9-pin connector for connecting the
field bus to the I/O-stations.
digital A value (e.g. a voltage) that is
represented by a state normally
„0“ or „1“.
DIN German Industries Standard.
EIA Electronic Industries Association -
association of electrical companies
in the United States.
EMC Electromagnetic compability - the
ability of an electrical part to
operate in a specific environment
without fault and without
disturbing its surroundings in a
negative manner.
EN European Standard.
field bus Data network on sensor/actuator
level. A field bus connects the
equipment on the field level.
Characteristics of a field bus are a
high transmission security and
real-time behaviour.
GND Ground (potential „0“).
ground Expression used in electronic
technology to describe an area
whose potential is zero. In neutral
grounding devices the potential is
not necessarily zero, and is called
the ground reference.
ground connection One or more components that have
a good and direct contact to earth.
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