National Instruments FP-3000 User Manual
Page 137
Glossary
© National Instruments Corporation
Glossary-5
FieldPoint FP-3000 User Manual
G
Ground
An intentional or accidental conducting path between an electrical
system or circuit and the earth or some conducting body acting in
place of the earth. A ground is often used as the common wiring point
or reference in a circuit.
H
H1
The 31.25 kbit/second type of Fieldbus.
HMI
Human-Machine Interface. A graphical user interface for the process
with supervisory control and data acquisition capability.
HotPnP
Hot Plug and Play.
Hz
Hertz.
I
IEC
International Electrotechnical Commission. A technical standards
committee which is at the same level as the ISO.
Index
An integer that the Fieldbus specification assigns to a Fieldbus object
or a device that you can use to refer to the object. A value in the object
dictionary used to refer to a single object.
Input parameter
A block parameter that receives data from another block.
I/O
Input/output.
ISA
Industry Standard Architecture.
Isolation
A type of signal conditioning in which you isolate the transducer
signals from the computer for safety purposes. This protects you and
your computer from large voltage spikes and makes sure the
measurements from the devices are not affected by differences in
ground potentials.
L
LAS
See Link Active Scheduler.
LED
Light-emitting diode.