Glossary
G-4
ni.com
FP-3000
National Instruments network interface module for the FieldPoint
I/O system.
Function block
A named block consisting of one or more input, output, and contained
parameters. The block performs some control function as its
algorithm. Function blocks are the core components you control a
system with. The Fieldbus Foundation defines standard sets of
function blocks. There are ten function blocks for the most basic
control and I/O functions. Manufacturers can define their own
function blocks.
Function Block Application
The block diagram that represents your control strategy.
H
H1
The 31.25 kbit/second type of Fieldbus.
hex
Hexadecimal. A base-16 numbering system which uses 0–9 and A–F.
HMI
Human-Machine Interface. A graphical user interface for the process
with supervisory control and data acquisition capability.
Hz
Hertz.
I
I/O
Input/output.
IEC
International Electrotechnical Commission. A technical standards
committee which is at the same level as the ISO.
in.
Inches.
IRQ
Interrupt request.
ISA
Industry Standard Architecture.
K
Kb
Kilobytes.
Kbits
Kilobits.
Kernel
The set of programs in an operating system that implements basic
system functions.
Kernel mode
The mode in which device drivers run on Windows NT.
