National Instruments Fieldbus - Manual (Page 35)

Glossary
FBUS-HSE/H1 LD User Manual G-6 ni.com
node Junction or branch point in a circuit.
non-volatile memory Memory that does not require electricity to hold data.
O
object An element of an object dictionary.
P
parameter One of a set of network-visible values that makes up a function block.
PC Personal computer.
polarity Term used to describe positive and negative charges.
poll To repeatedly inspect a variable or function block to acquire data.
port A communications connection on a computer or remote controller.
POST Power-on self test.
program A set of instructions the computer can follow, usually in a binary file
format, such as an
.exe file.
R
RA Ratio.
repeater Boost the signals to and from the further link.
resistor Component made of material that opposes the flow of current and therefore
has some value of resistance.
S
s Seconds.
scheduled
communications Communications that occur at the same time during each control cycle.