
Glossary
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.